A strong TH400 rebuild kit should match the transmission’s application and include the specific wear parts your overhaul requires, making this roundup useful for DIY rebuilders and transmission shops alike. The options range from complete kits with frictions, steels, seals, and hardware to soft-parts-only packages for builders sourcing hard parts separately. Raybestos Stage 1 and Alto Red Eagle options add named friction materials, while several Transparts Warehouse kits list components such as bands, filters, and bushings.
Fitment claims also vary: some specify 1965–1995, while others state 1965-up, 1966–1991, or 1968 and newer. Check your transmission’s details and compare each kit’s contents before ordering; “master” or “overhaul” in a title does not guarantee every part needed for your particular build is included.
The Transparts Warehouse Raybestos Stage 1 Master Kit leads because it combines Raybestos Stage 1 friction plates and Kolene steel plates with sealing rings, metal-clad seals, gaskets, a modulator, O-rings, and rubber piston seals. That gives it a clearly specified friction-and-seal package for a TH400 rebuild. Its listed contents do not include a filter, band, or bushings, so confirm whether those parts are already covered by your build plan before choosing it.
Our Top Picks
Best OverallTransparts Raybestos Stage 1 Master
Raybestos Stage 1 frictions and Kolene steels come with sealing rings, seals, gaskets, a modulator, O-rings, and rubber piston seals.
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Most Complete Parts ListThe 1965–1995 kit lists frictions, steels, seals, gaskets, a front band, filter, modulator, pump bushing, and extension housing bushing.
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Best Named Performance FrictionsTransparts Alto Red Eagle Deluxe
Its Alto Red Eagle friction plates and Kolene steels are paired with a Red Eagle front band, filter, modulator, and bushings.
View on Amazon- Best Deluxe Raybestos Kit Raybestos Stage 1 Deluxe Kit
Compare TH400 Rebuild Kit Contents and Best Fits
| # | Product | Weight | Buy |
|---|---|---|---|
| 1 | 1. Transparts Raybestos Stage 1 MasterBest Overall | 8 lb | View on Amazon |
| 2 | 2. Transparts High Energy MasterMost Complete Parts List | — | View on Amazon |
| 3 | 3. Transparts Alto Red Eagle DeluxeBest Named Performance Frictions | — | View on Amazon |
| 4 | 4. Raybestos Stage 1 Deluxe KitBest Deluxe Raybestos Kit | 11 lb | View on Amazon |
| 5 | 5. Transparts High Energy DeluxeDeluxe green-friction package | — | View on Amazon |
| 6 | 6. Transparts High Energy Less SteelGreen-friction kit without steels | — | View on Amazon |
| 7 | 7. Remco TH400 Master KitCore frictions-and-gaskets package | 6.09 lb | View on Amazon |
| 8 | 8. Transtec TH400 Gasket Seal KitTranstec gasket-and-seal refresh | 3 lb | View on Amazon |
| 9 | 9. TCI TH400 Racing Overhaul KitTH400 soft-parts refresh kit | 1.3 lb | View on Amazon |
| 10 | 10. NineEcho TH400 Master Kit1968-and-newer GM application | — | View on Amazon |
Detailed Reviews: Best Th400 Rebuild Kit

#1 · Best Overall
1. Transparts Raybestos Stage 1 Master
- Weight: 8 lb
Best for: Raybestos Stage 1 master kit.
Why it ranks #1: Raybestos Stage 1 frictions and Kolene steels come with sealing rings, seals, gaskets, a modulator, O-rings, and rubber piston seals.
Raybestos Stage 1 friction plates and Kolene steels define this Transparts Warehouse TH400 master kit, with a premium Transtec gasket kit adding a named sealing component. Its included seals, O-rings, and modulator expand the package beyond clutch materials, making it a focused option for buyers assembling those specified rebuild parts together.
The Raybestos Stage 1 frictions and Kolene steel plates provide a defined clutch-material pairing, while the premium Transtec gasket kit addresses gasket coverage. Sealing rings, metal-clad seals, O-rings, and rubber piston seals extend the listed sealing parts, and a modulator is included as well. The title identifies a TH400 Turbo 400 application. Unlike some broader kits, the supplied contents do not list a filter, band, or bushings, so plan for those separately if required.
- Raybestos Stage 1 friction plates
- Kolene steel plates
- Premium Transtec gasket kit
- Modulator and multiple seal types included
- A filter, band, and bushings are not listed in the supplied contents.
Skip it if you need a filter and band included; Transparts Warehouse's green-friction Master Kit B010R0GN62 lists both.
This fits a TH400 rebuilder seeking Raybestos Stage 1 frictions, Kolene steels, a Transtec gasket kit, and listed sealing parts. The contents description does not list a filter, band, or bushings, making that coverage a planning boundary.
Full product details
| Brand | Transparts Warehouse |
|---|---|
| Item Weight | 8 pounds |
| Manufacturer | Transparts Warehouse |
| Part Number | R34006CS1 |
Listed on Amazon as: Compatible With: Chevy GM Chevy GM TH400 Turbo 400 Transmission Raybestos Stage 1 Master Rebuild Kit
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#2 · Most Complete Parts List
2. Transparts High Energy Master
Best for: Complete high-energy overhaul kit.
Why it ranks #2: The 1965–1995 kit lists frictions, steels, seals, gaskets, a front band, filter, modulator, pump bushing, and extension housing bushing.
High-energy green friction plates and steels anchor this Transparts Warehouse TH400 master kit, giving rebuilders both clutch friction and steel components alongside a broad set of service parts. Its listed 1965–1995 TH400 fit range helps identify the applications it targets, while the included filter, band, and bushings extend coverage beyond plates and seals.
The kit combines green friction plates and steels with sealing rings, metal-clad seals, gaskets, O-rings, and rubber piston seals, so the parts order covers several sealing and clutch needs together. A front band, filter, modulator, pump bushing, and extension-housing bushing broaden the component coverage and can reduce the need to source those listed pieces separately. The stated 1965–1995 TH400 range gives a clear application boundary, but the contents list does not specify every rebuild component.
- High-energy green friction plates are included
- Steel plates are included with the frictions
- Includes a front band and filter
- Includes pump and extension-housing bushings
- The kit's contents list does not include a stated parts count.
Skip it if you need a kit explicitly listing Kolene steels; Transparts Warehouse's Raybestos Stage 1 Deluxe kit B07J5PRCQ2 names them.
For a TH400 rebuilder seeking green frictions, steels, seals, and several supporting parts in one kit, this package offers broad listed coverage. Use its 1965–1995 application range as a boundary and check the parts list against the specific overhaul.
Full product details
| Brand | Transparts Warehouse |
|---|---|
| Manufacturer | Transparts Warehouse |
| Part Number | 34006C_L2 |
Listed on Amazon as: Compatible With: Chevy GM Chevy GM TH400 Transmission Master Rebuild Kit Level 2
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#3 · Best Named Performance Frictions
3. Transparts Alto Red Eagle Deluxe
Best for: Red Eagle and Kolene clutch set.
Why it ranks #3: Its Alto Red Eagle friction plates and Kolene steels are paired with a Red Eagle front band, filter, modulator, and bushings.
ALTO Red Eagle friction plates paired with Kolene steels give this Transparts Warehouse deluxe TH400 kit a clearly named clutch combination. The package also lists a high-performance Red Eagle front band and supporting seals, filter, modulator, and bushings, making it a broad parts bundle for buyers seeking those specified components together.
Red Eagle frictions and Kolene steels supply the named clutch materials, while the Red Eagle front band adds another explicitly identified performance component. Sealing rings, metal-clad seals, gaskets, O-rings, and rubber piston seals cover additional sealing needs. A filter, modulator, pump bushing, and extension-housing bushing broaden the included parts. The listing states a 1965–1995 fit range, though its feature text refers to TH402, so the application wording merits careful review.
- ALTO Red Eagle friction plates
- Kolene steel plates
- Red Eagle front band
- Includes filter, modulator, and two bushings
- The listing's application wording conflicts between TH400 in the title and TH402 in the fit text.
Skip it if you want an unambiguous TH400 fit statement; Transparts Warehouse's green-friction Master Kit B010R0GN62 explicitly states 1965–1995 TH400.
This suits a rebuilder prioritizing Red Eagle frictions, Kolene steels, and a Red Eagle front band with seals and supporting parts. The title and fit text differ on TH400 versus TH402, so that wording is a material application boundary.
Full product details
| Brand | Transparts Warehouse |
|---|---|
| Manufacturer | Transparts Warehouse |
| Part Number | 031901HP_Deluxe_L2 |
Listed on Amazon as: Compatible With: Chevy GM TH400 Alto Red Eagle and Kolene steel Deluxe Transmission Rebuild Kit level 2
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#4 · Best Deluxe Raybestos Kit
4. Raybestos Stage 1 Deluxe Kit
- Weight: 11 lb
Best for: Raybestos-and-Kolene upgrade kit.
Why it ranks #4: The kit specifies Raybestos Stage 1 clutches, Kolene steels, a filter, band, bushing kit, seals, and premium Transtec gaskets.
Raybestos Stage 1 friction plates paired with Kolene steel plates are the central distinction of this Transparts Warehouse TH400 deluxe kit, giving rebuilders a named clutch-component combination. Its Transtec gasket kit and included band, filter, bushings, seals, and modulator extend the package beyond the friction-and-steel set for a broader overhaul workflow.
The Raybestos Stage 1 clutches and Kolene steels provide the kit's specified friction and steel components, while the premium Transtec gasket kit supplies a separate named part of the package. Sealing rings, metal-clad seals, O-rings, and rubber piston seals cover additional sealing needs; the band, filter, and bushing kit add supporting components. These inclusions consolidate several listed categories, although the supplied application information does not state a year range.
- Raybestos Stage 1 friction plates
- Kolene steel plates
- Premium Transtec gasket kit
- Includes filter, band, and bushing kit
- The supplied listing does not state a TH400 year-fit range.
Skip it if you need a stated year range for application screening; TCI's 228600 Racing Overhaul Kit specifies 1966–1991 TH400.
This suits rebuilders choosing Raybestos Stage 1 frictions and Kolene steels while wanting gaskets, seals, a band, filter, and bushings together. The listing gives no year range, so its application boundary requires attention before selecting parts.
Full product details
| Brand | Transparts Warehouse |
|---|---|
| Item Weight | 11 pounds |
| Manufacturer | Raybestos |
| Part Number | R34008CS1 |
Listed on Amazon as: TH400 Turbo 400 Transmission Raybestos Stage 1 Deluxe Rebuild Kit
View on AmazonWhy it ranks #5: This 1965–1995 deluxe kit includes high-energy frictions and steels, seals, gaskets, a front band, filter, modulator, and bushings.
High-energy green friction plates and steels give this Transparts Warehouse deluxe TH400 kit its central rebuild focus, while the listed filter, modulator, band, and bushings extend its component coverage. The stated 1965–1995 TH400 range sets an application window for buyers seeking a package that combines clutch materials with supporting service parts.
The green friction plates and steels bring both named clutch-material categories into one kit, and sealing rings, metal-clad seals, gaskets, O-rings, and rubber piston seals add sealing coverage. The front band, filter, modulator, pump bushing, and extension-housing bushing further widen the parts bundle. That combination can simplify parts planning around the listed components. The product is called deluxe and specifies 1965–1995 TH400 fit, but no individual component counts are provided.
- High-energy green friction plates
- Steel plates included
- Front band and filter included
- Pump and extension-housing bushings included
- The listing provides no individual component counts.
Skip it if you specifically want Kolene steels; Transparts Warehouse's Alto Red Eagle and Kolene Deluxe Kit B010R0GA38 names that steel type.
This fits a TH400 rebuild plan that calls for green frictions, steels, seals, and the included band, filter, modulator, and bushings. Its stated fit window is 1965–1995, and the listing does not specify component counts.
Full product details
| Brand | Transparts Warehouse |
|---|---|
| Manufacturer | Transparts Warehouse |
| Part Number | 34008C_L2 |
Listed on Amazon as: Compatible With: Chevy GM Chevy GM TH400 Transmission Deluxe Rebuild Kit Level 2
View on AmazonWhy it ranks #6: It lists high-energy frictions and seals plus a front band, filter, modulator, and bushings, but explicitly omits steel plates.
This Transparts Warehouse TH400 kit explicitly omits steel plates while retaining high-energy green frictions, making it the clearest choice here for a rebuild plan that reuses existing steels. Sealing components, a front band, filter, modulator, and two bushings are listed, with a stated 1965–1995 TH400 application range.
High-energy green friction plates are paired with sealing rings, metal-clad seals, gaskets, O-rings, and rubber piston seals, covering several listed clutch and sealing needs. The front band, filter, modulator, pump bushing, and extension-housing bushing add supporting components to the bundle. The title's “less steel” description is an important planning distinction: steel plates are not listed among the contents. Its 1965–1995 TH400 fit statement sets the stated application range.
- High-energy green friction plates included
- Includes sealing rings and metal-clad seals
- Front band and filter included
- Pump and extension-housing bushings included
- Steel plates are not included.
Skip it if you need new steels in the same order; Transparts Warehouse's green-friction kit B010R0GN62 includes steel plates.
Choose this when the rebuild calls for green frictions and supporting seals and service parts, while usable steels are already available. Its stated 1965–1995 TH400 range is clear, but the package does not supply replacement steel plates.
Full product details
| Brand | Transparts Warehouse |
|---|---|
| Manufacturer | Transparts Warehouse |
| Part Number | 34004C_L2 |
Listed on Amazon as: Compatible With: Chevy GM Chevy GM TH400 Alto Transmission Less Steel Rebuild Kit Level 2
View on AmazonWhy it ranks #7: It combines steels, friction plates, and an overhaul gasket kit, but excludes the filter, band, pistons, bushings, and thrust washers.
Ten steel plates split across forward, direct, and intermediate clutch applications give this Remco TH400/3L80 master kit a specific clutch-coverage detail. Combined with friction materials and a full overhaul gasket kit, that layout can help organize a rebuild around three named applications, while the stated omissions make parts planning essential.
The ten steels are divided among forward, direct, and intermediate clutch applications, giving buyers a useful view of where those plates are allocated. Frictions and a full overhaul gasket kit add clutch and sealing coverage in the same package. However, the listing expressly excludes the filter, band, pistons, bushings, and thrust washers; planning those items separately is important for a complete rebuild. The title specifies TH400/3L80 and 65-up applications.
- Ten steel plates across three clutch applications
- Friction components included
- Full overhaul gasket kit included
- TH400/3L80, 65-up application stated
- Filter, band, pistons, bushings, and thrust washers are excluded.
Skip it if you need a filter and band included; Transparts Warehouse's TH400 Master Rebuild Kit B010R0GN62 lists both.
Choose this for a TH400/3L80 rebuild where the forward, direct, and intermediate steel allocation and gasket coverage suit the parts plan. It is not an all-parts solution: source the expressly excluded filter, band, pistons, bushings, and thrust washers separately.
Full product details
| Brand | Remco |
|---|---|
| Item Weight | 6.09 pounds |
| Item model number | ARK-DK3400A-FBA |
| Manufacturer | REMCO |
| Part Number | ARK-DK3400A |
| Model | Rebuilt kit |
| Dimensions | 18 x 5 x 16 inches |
Listed on Amazon as: TH400 3L80 [65-UP] Automatic Transmission Master Rebuild Kit w/Frictions
View on AmazonWhy it ranks #8: This Transtec package covers gaskets, rings, and seals and states fitment for 1965-up, but does not list frictions or steels.
A Transtec TH400 rebuild kit focused on gaskets, rings, and seals is the defining feature here, making it a compact option for work centered on those service parts. The listing states applications from 1965 onward, offering a broad starting point for application screening, but identifies no friction plates, steels, or other hard-part contents.
The title identifies gaskets, rings, and seals, while the manufacturer is listed as Transtec; together, those details frame this as a soft-parts-oriented rebuild package rather than a clearly specified clutch-and-steel kit. The stated 1965-and-up application range helps establish a fit boundary for the TH400 family. Because the supplied features do not enumerate individual seals or list additional components, buyers should plan the rest of the rebuild around the actual parts required.
- Transtec-manufactured TH400 rebuild kit
- Title specifies gaskets, rings, and seals
- Applications listed from 1965 onward
- Three-pound listed item weight
- The supplied contents do not enumerate individual parts beyond gaskets, rings, and seals.
Skip it if you need frictions and steels in the package; TCI's 228600 Racing Overhaul Kit instead lists soft parts only, so consider a broader master kit.
This package fits a TH400 owner whose immediate rebuild plan centers on gaskets, rings, and seals and falls within the stated 1965-and-up applications. Its brief contents description makes it a poor match when a detailed component inventory is essential.
Full product details
| Brand | WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC |
|---|---|
| Item Weight | 3 pounds |
| Item model number | 81000112 |
| Manufacturer | Transtec |
| Part Number | 81000112 |
| Model | TH400 Turbo 400 Transmission Rebuild Kit |
| Package Dimensions | 17 x 15 x 1 inches |
Listed on Amazon as: TH400 Turbo 400 Transmission Rebuild Kit Gaskets Rings w/Seals Transtec 1965-98
View on AmazonWhy it ranks #9: The 1966–1991 racing kit supplies soft parts including oil seals, sealing rings, gaskets, and front and rear seals, not clutches or steels.
TCI's explicitly defined soft-parts coverage—oil seals, sealing rings, gaskets, and front and rear seals—makes this racing overhaul kit suited to a refresh focused on commonly replaced wear parts. Its stated 1966–1991 TH400 range gives a clear application window, while the limited contents distinguish it from a master kit with frictions and steels.
Oil seals, sealing rings, and gaskets cover the wear-part categories TCI names for an automatic transmission rebuild, with front and rear seals adding specific sealing components. Valve-body gaskets are also listed, helping clarify that the package reaches beyond a general gasket set. The 1966–1991 TH400 fit statement provides an application boundary. Because TCI characterizes this as wear parts only, buyers planning clutch or band upgrades need to source those components separately.
- Oil seals and sealing rings included
- Front and rear seals listed
- Valve-body gaskets included
- Specifies 1966–1991 TH400 fit
- This wear-parts-only kit does not list frictions, steels, or a band.
Skip it if you need frictions and steels included; Transparts Warehouse's Raybestos Stage 1 Master Kit B07J5Y2JLW lists both.
For a 1966–1991 TH400 refresh centered on seals, rings, and gaskets, this TCI kit keeps the listed wear parts together. Its soft-parts scope is the key boundary: clutch frictions, steels, and a band are not listed.
Full product details
| Brand | TCI |
|---|---|
| Color | Plain |
| Included Components | TCI 228600 66-'91 TH400 Racing Overhaul Kit |
| Item Weight | 1.3 pounds |
| Manufacturer | TCI |
| Model | 228600 |
| Warranty Description | 1 Year Limited |
Listed on Amazon as: TCI 228600 '66-'91 TH400 Racing Overhaul Kit
View on AmazonWhy it ranks #10: It claims fitment for 1968-and-newer TH400/3L80 transmissions and lists seals, gaskets, and hardware, but gives less specific contents.
Explicit compatibility with 1968-and-newer GM TH400/3L80 transmissions is the clearest buying boundary for this NineEcho overhaul package. The listing describes seals, gaskets, and necessary hardware as included, giving restorers a stated base for a transmission refresh, though it does not itemize clutch plates, steels, or the other components in detail.
The stated TH400/3L80 application and 1968-and-newer model range provide a concrete compatibility target for GM transmission work. Seals, gaskets, and necessary hardware are described as included, which supports a bundled approach to the listed overhaul needs. The product description also cites durable materials and precision-fit engineering, but does not specify individual parts or counts. Buyers planning beyond seals, gaskets, and hardware should account for that limited inventory detail when assembling a complete rebuild list.
- Specifies GM TH400/3L80 compatibility
- Lists 1968-and-newer models
- Includes seals and gaskets
- Necessary hardware is described as included
- The listing does not itemize the individual components or provide part counts.
Skip it if you require a detailed friction-and-steel inventory; Remco's TH400 3L80 kit B086MJW5K4 specifies steel allocation and exclusions.
This is for GM TH400/3L80 owners working on a 1968-or-newer model who want the listed seals, gaskets, and hardware together. Its brief inventory description is a boundary for buyers who need component-level planning.
Full product details
| Brand | NineEcho |
|---|---|
| Item model number | 1 |
| Manufacturer | NineEcho |
| Part Number | 1 |
| Model | 1 |
Listed on Amazon as: TH400 Master Rebuild Kit Complete Overhaul Package for GM Tur bo Hy dra-Ma tic 400 3L80 Automatic Transmission 1968 & Newer Models – Premium Quality Components & Seals
View on AmazonWhy a TH400 kit can still leave parts missing
A kit described as a master or overhaul package may not contain every component needed for your particular TH400 rebuild. The Remco TH400 Master Kit explicitly excludes its filter, band, pistons, bushings, and thrust washers, despite including steels, frictions, and a gasket kit. The Transparts Raybestos Stage 1 Master lists friction plates, steels, seals, gaskets, and a modulator, but does not list a filter, band, or bushings.
By contrast, Transparts High Energy Master names a front band, filter, modulator, pump bushing, and extension housing bushing in addition to frictions and steels. These differences make the parts list more useful than the word “complete” in a title.
Before ordering, compare the included items with your teardown list and identify any parts you need to source separately. Also check whether your existing parts are reusable rather than assuming every omitted component can be retained.
Check TH400 fitment and friction package details
Fitment labels and friction materials are not interchangeable details, so verify both against your transmission and rebuild plan. The listings give several different coverage descriptions: Transparts kits state 1965–1995, the TCI kit states 1966–1991, NineEcho specifies 1968 and newer, and Transtec says 1965-up. Remco identifies TH400/3L80 and labels its kit 65-up.
Treat those as the sellers’ stated ranges, not proof that every internal variation is covered; confirm the unit and required parts before purchase. The friction packages also differ materially: Raybestos Stage 1 products name Raybestos frictions and Kolene steels, the Alto kit names Red Eagle frictions and Kolene steels, while other Transparts kits specify high-energy green frictions.
The less-steel kit does not list steel plates at all. Choose by exact application and contents, not simply by a performance-sounding label.
How to Choose a TH400 Rebuild Kit
Included hard and soft parts
Start by matching the kit contents to the parts your rebuild requires. The broadest listed package, Transparts High Energy Master, includes frictions, steels, sealing rings, seals, gaskets, a band, filter, modulator, and two bushings. Transparts High Energy Less Steel omits steels; Transtec TH400 Gasket Seal Kit lists gaskets, rings, and seals without frictions or steels.
Remco TH400 Master Kit supplies steels and frictions but specifically excludes a filter, band, pistons, bushings, and thrust washers. Buyers assembling a fuller parts order may favour the High Energy Master, while builders who already have hard parts or want a soft-parts package may prefer a narrower kit.
Compare each item against your own parts list before deciding.
Friction and steel material
Choose the friction package by its named materials and the build requirements you have confirmed. The options include Raybestos Stage 1 friction plates with Kolene steel plates, Alto Red Eagle friction plates with Kolene steels, and Transparts high-energy green frictions and steels. The Raybestos Deluxe and Master listings also identify Raybestos clutches made in the USA; the Alto option names a Red Eagle front band as well.
Buyers seeking a kit with named friction and steel materials can compare these three families directly. Someone who already has serviceable steels may consider Transparts High Energy Less Steel, which lists frictions but no steel plates.
The supplied descriptions do not establish comparative performance, so avoid treating material names alone as proof of suitability for a particular duty cycle.
Stated application range
Verify the stated application range against the transmission you are rebuilding before choosing among these kits. Several Transparts kits specify 1965–1995 TH400 fitment; the TCI TH400 Racing Overhaul Kit states 1966–1991, while NineEcho describes compatibility with 1968-and-newer TH400/3L80 transmissions. The Transtec TH400 Gasket Seal Kit says 1965-up, and Remco identifies TH400/3L80 with a 65-up designation.
These ranges are not identical, and they do not by themselves establish compatibility with every internal configuration. Buyers with a transmission that falls squarely within a stated range can use that as a starting point; anyone uncertain about year, model, or transmission details should confirm fitment and contents with the seller before ordering.
Which TH400 Rebuild Kit Should You Choose?
For a broad rebuild package with named friction materials, choose Transparts Raybestos Stage 1 Master: it pairs Raybestos Stage 1 frictions with Kolene steels and lists seals, gaskets, and a modulator. If you need a more extensive stated parts list including a filter, front band, and bushings, Transparts High Energy Master is the stronger match. For Alto Red Eagle frictions and Kolene steels, choose Transparts Alto Red Eagle Deluxe.
Raybestos Stage 1 Deluxe Kit is an alternative that specifically lists a filter, band, and bushing kit. If steels are already accounted for, Transparts High Energy Less Steel may suit that parts plan.
For soft parts only, consider TCI TH400 Racing Overhaul Kit or Transtec TH400 Gasket Seal Kit, and verify the application range before ordering.
Frequently Asked Questions
How do I confirm which TH400 version and year range my transmission uses?
Match the transmission’s identification details and application information against the kit’s stated fitment before ordering. Check the vehicle or transmission documentation, and ask the seller to confirm compatibility if the version or year range is unclear. Do not rely on a general TH400 label alone; the listed kits show differing application ranges.
Which TH400 rebuild parts should I replace beyond the kit contents?
Decide based on your inspection and build plan, then verify whether the kit includes the parts you need. The Raybestos Stage 1 Master lists friction plates, steels, seals, gaskets, and a modulator, but not a filter, band, or bushings. Other listed kits specifically name a filter, band, or bushing kit.
When should I choose a high-performance friction package over standard replacement parts?
Choose a named performance friction package when its materials and contents match your intended rebuild, rather than assuming every kit is equivalent. The Raybestos Stage 1 Master pairs Raybestos Stage 1 frictions with Kolene steels; the Alto Red Eagle Deluxe lists Alto Red Eagle frictions and Kolene steels. Verify fitment and the rest of your parts plan.
How can I tell whether a kit includes a filter, band, or bushings?
Check the stated contents rather than inferring coverage from words such as “master” or “complete.” The High Energy Master is described as including a filter, front band, and bushings; the Raybestos Stage 1 Deluxe specifically lists a filter, band, and bushing kit. Confirm exact contents for the kit you select.
When is a soft-parts kit the right choice?
A soft-parts kit can fit a plan focused on gaskets and seals when friction plates and other hard parts are handled separately. The TCI Racing Overhaul Kit and Transtec Gasket Seal Kit are identified as soft-parts options in the editorial guidance. Check each kit’s contents and application range before ordering.
Final Words
For a broad rebuild package with clearly named friction materials and sealing parts, the Transparts Raybestos Stage 1 Master is the lead choice; plan separately for its unstated filter, band, and bushing coverage. Choose the High Energy Master if its stated filter, front band, and bushings better match your needs, or the Alto Red Eagle Deluxe for its named frictions and Kolene steels. Confirm application and contents before ordering.








