A strong transfer case choice matches your truck’s transmission, model-year range, spline count, and shift setup; for many GM owners, the Transfer Case World NP246 03-07 is a clear starting point because it is listed for 2003–2007 trucks with a 4L60E or 4L80E. This roundup compares eight replacement units, including NP246, NP261, and NP263 variants for different GM truck configurations. The critical distinction is not simply the transfer-case family: several listings require a specific engine, RPO code, input spline count, or manual versus electric shift.
Check those details against your vehicle before ordering. The products also differ in construction and service terms, including remanufactured and newly manufactured units, no-core-return listings, and an 18-month unlimited-mileage replacement warranty on select models.
The Transfer Case World NP246 03-07 is the strongest general pick here for a GM truck with a 4L60E or 4L80E, provided the year and input spline version match. Its listing covers 2003–2007 applications, identifies 27-spline and 32-spline versions, says no core return is needed, and includes an 18-month unlimited-mileage replacement warranty. It leads because its stated transmission coverage directly addresses the search, but it is not a universal fit: confirm the exact spline count and vehicle application first.
Our Top Picks
Best OverallTransfer Case World NP246 03-07
Listed for 2003–2007 GM trucks with 4L60E or 4L80E, with 27- or 32-spline versions, no core return, and an 18-month warranty.
View on Amazon
Older NP246 FitTransfer Case World NP246 98-02
Covers 1998–2002 GM trucks with 4L60E or 4L80E and specifies the 32-spline 4L80E version, plus no core return.
View on Amazon
6.0L Electric ShiftTargets 2001–2007 2500/3500 trucks with a 6.0L engine and 4L80E; its NP1 code identifies the electric-shift unit.
View on Amazon- Manual 6.0L Fit Transfer Case World NP261HD 6.0L
- Manual Heavy-Duty Transfer Case World NP261XHD
Compare the transfer-case options and fit details
| # | Product | Package Dimensions | Weight | Buy |
|---|---|---|---|---|
| 1 | 1. Transfer Case World NP246 03-07Best Overall | 32 x 29 x 16 in | 90 lb | View on Amazon |
| 2 | 2. Transfer Case World NP246 98-02Older NP246 Fit | 32 x 29 x 16 in | 90 lb | View on Amazon |
| 3 | 3. Transfer Case World NP263HD6.0L Electric Shift | — | 85 lb | View on Amazon |
| 4 |  4. Generic NP263HDNP1 6.0L electric-shift trucks | — | — | View on Amazon |
| 5 |  5. Transfer Case World NP261HD 6.0LManual 6.0L Fit | — | 85 lb | View on Amazon |
| 6 | 6. Transfer Case World NP261XHDManual Heavy-Duty | — | 85 lb | View on Amazon |
| 7 |  7. GELUOXI NP263XHDDuramax or 8.1L XHD applications | 25 x 21.5 x 14.5 in | 89.8 lb | View on Amazon |
| 8 |  8. Woosphy NP261HDBroad 2001–2007 HD coverage | 25 x 21.3 x 14.8 in | 89.5 lb | View on Amazon |
Detailed Reviews: Best Transfer Case For Transmission
#1 · Best Overall
1. Transfer Case World NP246 03-07
- Package Dimensions: 32 x 29 x 16 in
- Weight: 90 lb
Best for: Electronic-shift NP246 replacement.
Why it ranks #1: Listed for 2003–2007 GM trucks with 4L60E or 4L80E, with 27- or 32-spline versions, no core return, and an 18-month warranty.
A new heavy-duty rear case sets this remanufactured NP246 apart, providing a replacement option for 2003–2007 GM trucks with a 4L60E or 4L80E automatic transmission. Its electronic-shift configuration suits trucks using that control style, while no core return is needed after the old unit is removed.
The listed application spans 4L60E and 4L80E trucks, but the supplied item variant is specifically the 27-spline input for a 4L60E. That distinction makes checking the transmission and input version essential before ordering. The electronic-shift design matches trucks equipped for electronic operation, and the new heavy-duty rear case is a concrete replacement feature. Because the unit is remanufactured and needs no core return, the buyer can avoid arranging a return of the old case.
- New heavy-duty rear case
- Electronic-shift NP246 configuration
- No core return needed
- Listed for 2003–2007 GM trucks
- This listed variant specifies a 27-spline input for 4L60E applications.
Skip it if you have a 1998–2002 GM truck; Transfer Case World NP246 32-Spline Input / 4L80E B0FBTX4SMJ covers that earlier application.
A suitable candidate for owners of 2003–2007 GM trucks seeking a remanufactured electronic-shift NP246 without a core return. The supplied variant is 27-spline for 4L60E, so the 4L80E listing alone does not establish this version’s fit.
Full product details
| Brand | Transfer Case World |
|---|---|
| Item Weight | 90 pounds |
| Item model number | 27-Spline Input / 4L60E |
| Manufacturer | Transfer Case World |
| Part Number | NP246 |
| Model | NP246 |
| Package Dimensions | 32 x 29 x 16 inches |
Listed on Amazon as: NP246 Transfer Case- NP8 Fits 03-07 With 4L80E Or 4L60E- OEM Quality Replacement Unit from Transfer Case World NO Core Needed (27-Spline Input / 4L60E)
View on Amazon#2 · Older NP246 Fit
2. Transfer Case World NP246 98-02
- Package Dimensions: 32 x 29 x 16 in
- Weight: 90 lb
Best for: Earlier 4L80E NP246 trucks.
Why it ranks #2: Covers 1998–2002 GM trucks with 4L60E or 4L80E and specifies the 32-spline 4L80E version, plus no core return.
This remanufactured NP246 covers 1998–2002 GM trucks with 4L60E or 4L80E automatic transmissions, distinguishing it from the later-year NP246 listing. The specified variant is a 32-spline input for 4L80E, and its new heavy-duty rear case is included without requiring a core return.
The 1998–2002 model-year range is the first application check, followed by transmission and input version: this item is specifically identified as 32-spline for 4L80E. The listing also mentions 4L60E with 27 splines, so those configurations should not be conflated. Electronic shifting suits trucks with that control setup, while the new heavy-duty rear case is a stated construction feature. No core return is needed, simplifying disposal or retention of the old unit.
- 32-spline input for 4L80E variant
- Electronic-shift NP246
- New heavy-duty rear case
- No core return needed
- The specified variant is 32-spline for 4L80E, not the 27-spline 4L60E version.
Skip it if you have a 2003–2007 GM truck; Transfer Case World NP246 27-Spline Input / 4L60E B0FBT82G9K lists the later application.
This NP246 fits the listed earlier-year buyer seeking a remanufactured, electronic-shift case, especially the 32-spline 4L80E variant. Its 1998–2002 range and input version are important boundaries when matching a truck.
Full product details
| Brand | Transfer Case World |
|---|---|
| Item Weight | 90 pounds |
| Item model number | 32-Spline Input / 4L80E |
| Manufacturer | Transfer Case World |
| Part Number | NP246 GM |
| Model | NP246 GM |
| Package Dimensions | 32 x 29 x 16 inches |
Listed on Amazon as: NP246 Transfer Case- NP8 Fits 98-02 With 4L60E Or 4L80E- OEM Quality Replacement Unit from Transfer Case World NO Core Needed (32-Spline Input / 4L80E)
View on Amazon#3 · 6.0L Electric Shift
3. Transfer Case World NP263HD
- Weight: 85 lb
Best for: 6.0L 4L80E electric-shift trucks.
Why it ranks #3: Targets 2001–2007 2500/3500 trucks with a 6.0L engine and 4L80E; its NP1 code identifies the electric-shift unit.
The NP263HD’s heavy-duty rear case targets 2001–2007 GM 2500HD and 3500HD trucks with a 6.0L engine and 4L80E automatic transmission. Its NP1 RPO identification and electric-shift configuration help distinguish this unit from other NP263 versions when selecting a replacement for a matching truck.
The stated 6.0L and 4L80E application narrows this replacement to a specific heavy-duty truck setup, helping buyers avoid treating all NP263 cases as interchangeable. NP1 identifies the listed electric-shift, standard-duty version, while the heavy-duty rear case is an included construction feature. The unit is remanufactured in the USA, and its 85-pound listed weight is relevant when planning handling during replacement. Verify the truck’s RPO and configuration against the application before choosing it.
- NP1 RPO identification
- Electric-shift configuration
- Heavy-duty rear case
- Listed for 2001–2007 GM 2500HD/3500HD 6.0L trucks with 4L80E
- The listed application is limited to 6.0L trucks with a 4L80E transmission.
Skip it if you have a 6.6L Duramax or 8.1L truck with a manual-shift case; Transfer Case World NP261XHD B0FB7KS3DW lists those engines and lever shifting.
Choose this NP263HD when your 2001–2007 GM 2500HD or 3500HD matches the 6.0L, 4L80E, NP1 electric-shift application. Its specific configuration is a boundary: it is not the listed manual-shift or Duramax version.
Full product details
| Brand | Transfer Case World |
|---|---|
| Item Weight | 85 pounds |
| Item model number | NP263HD |
| Manufacturer | Transfer Case World |
| Part Number | 263HD |
| Model | NP 263HD |
Listed on Amazon as: NP263HD Transfer Case 2001-2007 | Fits Chevy & GMC 2500/3500 6.0L Trucks W/4L80E | NP1 RPO Code | OEM Quality Replacement Unit Built In The USA By Transfer Case World!
View on Amazon#4
4. Generic NP263HD
Best for: NP1 6.0L electric-shift trucks.
Why it ranks #4: Also specifies 2001–2007 GM trucks with a 6.0L engine, 4L80E, and NP1 electric shift, though its listing provides fewer details.
NP1 identification marks this remanufactured NP263HD as an electric-shift unit for 2001–2007 GM trucks with a 6.0L engine and 4L80E transmission. Its heavy-duty rear case supplies a specific replacement feature, while the stated application helps buyers separate it from other NP263 configurations.
The 6.0L engine and 4L80E transmission define the stated application, so this listing is aimed at a narrower group than the broad GM truck label might suggest. NP1 identifies its electric-shift configuration, a useful distinction when a truck’s existing case is controlled electrically. The heavy-duty rear case is another stated feature relevant to the replacement unit. Since the listing calls for an exact application match, confirm the truck’s configuration rather than relying on model year alone.
- NP1 RPO identification
- Electric-shift unit
- Heavy-duty rear case
- Listed for 2001–2007 GM 6.0L trucks with 4L80E
- The stated application is limited to 6.0L engines paired with 4L80E.
Skip it if you need a manual-shift case for a 6.6L or 8.1L truck; Transfer Case World NP261XHD B0FB7KS3DW lists those engines and a floor lever.
This listing suits a 2001–2007 GM truck owner whose 6.0L, 4L80E setup calls for an NP1 electric-shift NP263HD. Its application does not cover the listed manual-shift XHD configurations.
Full product details
| Brand | Generic |
|---|---|
| Item model number | NP263HD |
| Manufacturer | Transfer Case World |
| Part Number | 263HD |
| Model | NP 263HD |
Listed on Amazon as: NP263HD Transfer Case- NP1 Fits 01-07 GM Trucks with 6.0L & 4L80E Transmission- OEM Quality Replacement Unit From Transfer Case World
View on Amazon#5 · Manual 6.0L Fit
5. Transfer Case World NP261HD 6.0L
- Weight: 85 lb
Best for: 6.0L 4L80E manual-shift trucks.
Why it ranks #5: Fits 2001–2007 2500/3500 6.0L trucks with 4L80E and NP2 RPO code; it shifts manually with a floor lever.
The floor-mounted manual lever sets this NP261HD apart for 2001–2007 2500HD and 3500HD trucks with a 6.0L engine and 4L80E transmission. Its NP2 RPO code identifies the listed configuration, helping buyers distinguish this manually shifted case from electric-shift alternatives.
This rebuilt NP261HD is specified for GM and Chevy 2500/3500 trucks with a 6.0L Vortec engine and 4L80E automatic transmission. NP2 identifies the application, while the floor lever confirms manual transfer-case operation despite the truck’s automatic transmission. That distinction matters when replacing a case because transmission type alone does not describe how the transfer case shifts. The unit is remanufactured in the USA, and its listed 85-pound weight is relevant when planning installation handling.
- Manual shift with floor lever
- NP2 RPO code
- Listed for 6.0L Vortec and 4L80E
- Remanufactured in the USA
- This is a manual-shift case, not an electric-shift unit.
Skip it if you need electric shifting for a 6.0L 4L80E truck; Transfer Case World NP263HD B0FB7H2SRV lists an NP1 electric-shift application.
A fit to investigate for owners of 2001–2007 2500/3500 trucks matching the 6.0L, 4L80E, NP2 application and floor-lever operation. Its manual-shift setup is the crucial boundary, even with an automatic transmission.
Full product details
| Brand | Transfer Case World |
|---|---|
| Item Weight | 85 pounds |
| Item model number | 261HD |
| Manufacturer | Transfer Case World |
| Part Number | 261HD |
| Model | NP261HD |
Listed on Amazon as: NP261HD Rebuilt Transfer Case 2001–2007| Fits 2500/3500 6.0L Trucks W/4L80E | NP2 RPO Code | OEM Quality Replacement Unit From Transfer Case World
View on Amazon#6 · Manual Heavy-Duty
6. Transfer Case World NP261XHD
- Weight: 85 lb
Best for: Manual-shift Duramax HD trucks.
Why it ranks #6: Covers 2001–2007 2500HD/3500HD trucks with 6.6L or 8.1L engines and a manual-shift transfer case.
A floor-mounted manual shift lever is the defining feature of this NP261XHD, making it the listed choice for drivers whose truck uses manual transfer-case control. Its application covers 2001–2007 Chevy and GMC 2500HD/3500HD trucks with 6.6L or 8.1L engines, rather than the 6.0L version.
The manual-shift configuration, identified as a lever on the floor, matches trucks that operate the transfer case through a cabin lever rather than electric controls. The stated 6.6L and 8.1L engine range covers the listed heavy-duty Chevy and GMC 2500HD/3500HD applications from 2001–2007. Transfer Case World describes the unit as remanufactured in the USA, and the 85-pound weight is useful to account for during handling. Check that the existing case is manual shift before selecting it.
- Manual shift with floor lever
- NP261XHD configuration
- Listed for 6.6L and 8.1L engines
- Remanufactured in the USA
- This is a manual-shift unit, not the listed electric-shift version.
Skip it if you have a 6.0L 4L80E truck requiring NP2 manual shift; Transfer Case World NP261HD B0FB7QDHLG lists that specific application.
For owners of listed 2001–2007 Chevy or GMC 2500HD/3500HD trucks with a 6.6L or 8.1L engine and floor-lever shifting, this is a focused option. The manual-shift requirement is its key fit boundary.
Full product details
| Brand | Transfer Case World |
|---|---|
| Item Weight | 85 pounds |
| Item model number | NP261XHD |
| Manufacturer | Transfer Case World |
| Part Number | 261XHD |
| Model | NP 261XHD |
Listed on Amazon as: NP261XHD Rebuilt Transfer Case 2001–2007 | Fits Chevy & GMC 2500/3500 6.6L & 8.1L Trucks | OEM Quality Replacement Unit From Transfer Case World
View on Amazon#7
7. GELUOXI NP263XHD
- Package Dimensions: 25 x 21.5 x 14.5 in
- Weight: 89.8 lb
Best for: Duramax or 8.1L XHD applications.
Why it ranks #7: Lists 6.6L Duramax or 8.1L applications and specifies 29 input, 31 rear-output, and 32 front-output splines; transmission fit differs.
A newly manufactured, non-refurbished 263XHD with a 29-spline input distinguishes this assembly from rebuilt alternatives. It is listed for 2001–2007 Silverado and Sierra 2500HD/3500HD trucks with a 6.6L Duramax or 8.1L gas engine, including Allison automatic and six-speed manual applications.
The 29-spline input and electric-shift specification identify the assembly’s connection and operating style, while 31 rear-output and 32 front-output splines give buyers concrete configuration details to check against their truck. Its listed engine and transmission applications include 6.6L Duramax or 8.1L gas trucks with Allison transmission or six-speed manual. As a newly manufactured unit with no refurbished parts, it also avoids the old-unit core-return process. The listing specifically cautions buyers to distinguish 263XHD from 263HD.
- Newly manufactured; no parts refurbished
- No core return needed
- 29-spline input with electric shift
- 31 rear and 32 front output splines
- The listing warns this is 263XHD, not 263HD.
Skip it if you have a 6.0L 4L80E truck needing NP1 electric shift; Transfer Case World NP263HD B0FB7H2SRV lists that application.
Consider this assembly for a listed 2001–2007 Silverado or Sierra HD with the specified Duramax or 8.1L engine and transmission. Its 263XHD identity and spline counts make exact configuration matching especially important.
Full product details
| Brand | GELUOXI |
|---|---|
| Item Weight | 89.8 pounds |
| Item model number | 24228417 |
| Manufacturer | GELUOXI |
| Part Number | 24228417 |
| Model | Transfer Case Assy |
| Package Dimensions | 25 x 21.5 x 14.5 inches |
Listed on Amazon as: NP263XHD Transfer Case Assembly Replacement for Silverado Sierra 2001-2007
View on Amazon#8
8. Woosphy NP261HD
- Package Dimensions: 25 x 21.3 x 14.8 in
- Weight: 89.5 lb
Best for: Broad 2001–2007 HD coverage.
Why it ranks #8: Its application list covers several Silverado and Sierra years, but the provided details do not identify a matching transmission or engine.
Coverage across listed Silverado and Sierra 1500, 2500, and 3500 applications gives this NP261HD replacement a broad vehicle range for 2001–2007 trucks. The unit is not refurbished, and the supplied 75W-90 gear-oil specification makes lubrication a clear installation preparation step rather than an afterthought.
The application list includes Chevrolet and GMC 1500, 2500, and 3500 models across 2001–2006 and Classic 2007 versions, giving buyers several listed truck families to check. This product is not refurbished, and its 75W-90 gear-oil requirement informs preparation before installation. The supplied facts specifically warn that installing without adding gear oil can damage the case and lead to premature failure. Its 89.5-pound weight also matters for handling during installation.
- Not a refurbished piece
- 75W-90 gear-oil type specified
- Listed coverage includes Silverado and Sierra 1500/2500/3500 models
- Front output has 32 internal splines, one tooth missing
- Gear oil must be added before installation to avoid damage.
Skip it if you want a remanufactured unit with a stated 18-month replacement warranty; Transfer Case World NP261HD B0FB7QDHLG lists one for 6.0L 4L80E trucks.
A potential match for buyers checking the listed 2001–2007 Silverado or Sierra applications who can prepare the case with 75W-90 oil before installation. Confirm the exact truck configuration and plan for the unit’s 89.5-pound handling weight.
Full product details
| Brand | Woosphy |
|---|---|
| Item Weight | 89.5 pounds |
| Item model number | 12581007 12576436 |
| Manufacturer | Woosphy |
| Part Number | 12581007 12576436 |
| Package Dimensions | 25 x 21.3 x 14.8 inches |
Listed on Amazon as: NP261HD Transfer Case Replacement for Chevy/GMC 2500/3500 HD 2001-2007
View on AmazonAvoid the NP263HD and NP263XHD mix-up
The NP263HD and NP263XHD are distinct listings, so do not choose between them by model-family name alone. The Transfer Case World NP263HD is listed for 2001–2007 GM trucks with a 6.0L engine and 4L80E, and identifies its electric-shift configuration with NP1. By contrast, GELUOXI NP263XHD specifies a 29-spline input, 31 rear-output splines, and 32 front-output splines, and lists 6.6L Duramax or 8.1L gas applications with Allison transmission or six-speed manual.
The XHD listing explicitly warns buyers to distinguish it from the HD version. A wrong variant can mean the listed transmission, engine, or shaft configuration does not match the truck.
Confirm the RPO code, transmission, engine, and spline requirements from the vehicle and existing unit before ordering; the product names alone are not enough to establish interchangeability.
Plan for fluid before installing a replacement
The Woosphy NP261HD listing specifically says to add gear oil before installation and warns that running without it can damage the transfer case and lead to premature failure. It identifies 75W-90 as the gear-oil type and notes a 32-tooth internal-spline front output with one tooth missing. That makes fluid preparation and output matching practical checks, not details to leave until after fitting.
Other listings do not provide the same lubrication instruction in the supplied information, so do not assume every unit arrives filled or that one fluid specification applies to all models. Check the installation instructions for the exact replacement and vehicle, verify the output configuration, and prepare the required lubricant before fitting.
The Woosphy listing also describes a newly manufactured, non-refurbished piece, while several Transfer Case World units are described as remanufactured; that distinction may shape how a buyer plans the replacement, but does not establish comparative durability.
How to Choose a GM Transfer Case
Transmission, engine, and model years
Start by matching the transmission, engine, and model-year range together, rather than relying on a broad vehicle name. The Transfer Case World NP246 03-07 lists 2003–2007 GM trucks with a 4L60E or 4L80E; its older counterpart covers 1998–The NP263HD listings target 2001–2007 6.0L trucks with a 4L80E, while the NP261XHD is listed for 6.6L or 8.1L applications.
These ranges overlap, but the units are not interchangeable based on year alone. A buyer replacing an NP246 in the stated newer range should focus on that application; a 6.0L 4L80E 2500/3500 owner should compare the NP263HD and NP261HD listings and confirm shift type.
Shift type and RPO code
Choose a unit with the same shift method and, where listed, the correct RPO code. The Transfer Case World NP263HD is electric shift and identifies NP1; the NP261HD 6.0L is manual shift with a floor lever and identifies NP2. The NP261XHD listing also specifies manual shift, while both NP246 listings describe electronically shifted units.
A mismatch in shift configuration can make an otherwise plausible engine and transmission match insufficient. Buyers whose existing case is electric should prioritize the NP246 or NP263HD entries only when the vehicle application also matches.
Owners with a floor lever should investigate the NP261 choices, then verify engine, transmission, and RPO details. Confirm the code on the truck or its records rather than assuming it from the model name.
Spline count and replacement type
Verify the input and output spline details, and note whether the listing describes a remanufactured or newly manufactured unit. The NP246 03-07 is offered in 27-spline and 32-spline versions; the NP246 98-02 title specifies 32-spline input for a 4L80E. GELUOXI NP263XHD lists 29 input, 31 rear-output, and 32 front-output splines, while Woosphy NP261HD specifies a 32-tooth internal-spline front output with one tooth missing.
Transfer Case World describes its NP246 and several HD units as remanufactured; GELUOXI and Woosphy say their products are newly manufactured or not refurbished. Buyers replacing a known unit should prioritize matching shaft details, while buyers uncertain about their configuration should confirm it before selecting either replacement type.
Which Transfer Case Should You Choose?
For a 2003–2007 GM truck with a 4L60E or 4L80E, start with the Transfer Case World NP246 03-07, then verify whether your application needs 27 or 32 input splines. For a 1998–2002 truck with those transmissions, choose the Transfer Case World NP246 98-02 only after confirming the listed version. A 6.0L 2500/3500 with a 4L80E and electric shift points to the Transfer Case World NP263HD; a similar truck with a floor lever points instead to the Transfer Case World NP261HD 6.0L.
For 6.6L or 8.1L trucks with manual shift, consider the Transfer Case World NP261XHD. Choose GELUOXI NP263XHD only when its listed engine, transmission, and spline details match.
The Woosphy NP261HD is the least specific transmission match here.
Related Buying Guides
Frequently Asked Questions
How can I identify the transfer-case RPO code on my GM truck?
Find the truck’s RPO information on its identification label or in its build records, then compare the transfer-case code with the listing. The products here identify NP8, NP1, or NP2 applications. If the code is missing or unclear, confirm the vehicle’s build information with a GM parts professional before ordering.
How do I verify the input and output spline counts before ordering?
Check the existing transfer case’s identification information or have a driveline shop verify the spline counts, then compare them with the exact listing. The NP246 listings distinguish 27-spline and 32-spline inputs; do not assume either version fits your truck. Confirm output spline details separately because they are not specified for every product here.
Should I replace transfer-case fluid or inspect other driveline parts during installation?
Check the replacement unit’s and vehicle’s service information for the correct fluid and service procedure; do not assume a fluid specification from these listings. During installation, inspect related driveline connections and parts for wear or damage, and address issues that could affect fit or operation. A qualified installer can advise on any needed service.
How does shift style affect which heavy-duty transfer case I should choose?
Match the transfer case to the truck’s shift style as well as its engine and transmission. The published guidance points to the NP263HD for a 6.0L 2500/3500 with a 4L80E and electric shift, and to the NP261HD 6.0L for a similar truck with a floor lever. Verify the exact application before ordering.
What should I do if my truck's year or transmission is not clearly covered?
Do not select a unit based on a broad model description alone. Compare the truck’s year, engine, transmission, RPO code, shift style, and spline requirements with the specific listing. The NP246 options cover different year ranges, while the Woosphy NP261HD has a less specific transmission match; confirm compatibility before purchase.
Final Words
For a 2003–2007 GM truck with a 4L60E or 4L80E, start with the Transfer Case World NP246 03-07, then verify the required 27- or 32-spline input and vehicle application. For other trucks, match year, engine, transmission, RPO code, and shift style to the listed option. Confirm any unspecified spline details before ordering; a listing that appears close is not proof of fit.
