Best Radiator For Semi Truck: Compare 10 Truck-Fit Options

#1 · Best Overall

1. SCITOO TR9186 Radiator

• Weight: 44.2 lb
• Dimensions: 48.03 x 46.65 x 8.27 in

Best for: Kenworth Model-Specific Fitment.

Why it ranks #1: Its listed fitment covers Kenworth T400, T800, and W900 trucks across numerous engine sizes, making it the broadest specified heavy-truck application here.

A broad Kenworth fitment list is the key feature of the SCITOO TR9186 radiator, spanning T400, T800, and W900 applications with specified engine sizes and years. That detail helps truck owners narrow a replacement choice by both chassis family and engine instead of relying on a model name alone.

The listing names T400 applications with 8.3L and 8.9L engines, and a range of T800 engine sizes including 10.8L, 11.1L, 11.9L, 12.5L, 12.9L, 14.6L, 14.9L, 15.0L, and 15.8L for 2011. It also includes W900 fitment, including 10.8L applications for 2008–2011. This engine-specific coverage makes checking the truck’s exact configuration central to selection; the supplied information does not describe core construction or installation details.

Skip it if you need stated radiator material or installation details before choosing; the supplied listing focuses on vehicle fitment.

This option suits Kenworth owners whose T400, T800, or W900 engine and model year match the listed applications. Treat the engine-size details as essential selection criteria; the supplied information does not establish core dimensions or installation configuration.

Listed on Amazon as: SCITOO TR9186 Engine Radiator Fit for Kenworth & Peterbilt

#2 · Best Four-Row Kenworth Fit

2. Mytee Products Kenworth Radiator

• Weight: 200 lb
• Dimensions: 40"L x 28.5"W x 40"H

Best for: Four-Row Kenworth Heavy-Duty Replacement.

Why it ranks #2: The four-row, 40-by-28.5-inch core and specified straight left-side 2.5-inch inlet suit listed Kenworth T600A, T800, W900, and T400 replacements.

A four-row core and included bottom frame distinguish this Mytee Products radiator for selected Kenworth T600A, T800, W900, and T400 trucks from 1984–2007. The frame is a practical installation detail, while the listed core dimensions and inlet and outlet configuration help buyers assess the replacement’s physical layout.

The radiator has a 40-inch core height, 28.5-inch width, and 2.0625-inch depth, with a 2.5-inch straight inlet on the left and a flanged center-bottom outlet. Those details help installers compare the replacement’s connections and layout with the truck’s existing setup. Its four-row core is specified for the listed Kenworth applications, and a bottom frame is included. The listing identifies a steel frame and heavy-duty metal core, giving buyers material and structural details to consider.

Skip it if you need a lightweight radiator for one-person handling; this unit is listed at 200 pounds.

This is a fitment candidate for owners of listed 1984–2007 Kenworth T600A, T800, W900, or T400 trucks seeking a four-row radiator with a bottom frame. Plan handling around its listed 200-pound weight and connection layout.

Listed on Amazon as: Mytee Products Heavy Duty Radiator for Kenworth T600A T800 W900 T400 1984-2007 Replaces OEM 1720204 1A020259 2400092 5580484 X510201 Direct Fit Replacement

#3 · Best Peterbilt Application

3. Mytee Products Peterbilt Radiator

• Weight: 100 lb
• Dimensions: 36.25"L x 33.25"W x 33.25"H

Best for: Peterbilt Downflow Four-Row Option.

Why it ranks #3: Its four-row downflow design lists Peterbilt 357, 379, 378, 387, 385, and 377 applications, with an 18-month warranty.

A four-row radiator with a downflow outlet is the defining configuration of this Mytee Products replacement for several Peterbilt models. The listed application spans model years from 1993 through 2007, while copper/brass core material and the downflow outlet offer specific construction and routing details for replacement planning.

The fitment list includes Peterbilt 379, 378, 357, 387, 385, and 377 applications, with model-year ranges varying by model. A four-row design and downflow outlet give buyers two concrete configuration points to compare with the truck’s existing radiator. The listing identifies a copper/brass core and describes the function as maintaining engine temperature and minimizing overheating. Its stated dimensions are 36.25 by 33.25 by 33.25 inches, useful when assessing space and handling.

Skip it if you own a Peterbilt model year outside its listed application; the fitment years differ across the named models.

This radiator suits owners of the listed Peterbilt 357, 379, 378, 387, 385, or 377 applications seeking a four-row downflow replacement. Check the year range for the exact model and account for the stated dimensions during installation planning.

Listed on Amazon as: Mytee Products 4 Row Radiator w/Downflow Outlet Compatible with Peterbilt 357, 379, 378, 387 (1993-2007) – Copper & Brass Radiator Replace 07-06657A041, 07-06657A017, 21013706, 42002281, 437402

#4 · Best Classic Cascadia Fit

4. Auto Dynasty Classic Cascadia Radiator

Best for: Freightliner Factory-Style Replacement.

Why it ranks #4: This two-row aluminum radiator is listed for Freightliner Classic, Cascadia, and M2 112 applications, and includes a transmission oil cooler.

A factory-style, two-row aluminum-core radiator with transmission oil cooler is the defining feature of this Auto Dynasty replacement. It gives owners of specified Freightliner trucks a direct OE-style option that pairs aluminum cooling fins with a lightweight design, while the listed vehicle applications help narrow the fitment decision.

The stated fitment covers Freightliner Classic models from 2008–2011, Cascadia models from 2012–2013, and the M2 112 for 2011. Its two-row core and aluminum cooling fins are described as supporting improved engine-cooling efficiency, while the transmission oil cooler adds a relevant component for trucks needing that configuration. The product is presented as a direct OE replacement and factory style, but installation instructions are not included, so the work may call for a professional installer.

Skip it if you need installation instructions in the package; this listing recommends professional installation and does not include instructions.

This is a candidate for Freightliner Classic, Cascadia, or M2 112 owners whose model year matches the listed applications and who need a two-row radiator with transmission oil cooler. Account for the lack of included instructions when planning installation.

Listed on Amazon as: Auto Dynasty Radiator Compatible with 2008-2013 Freightliner Classic Cascadia M2 112 Trucks, Factory Style 2-Row Cooling Radiator, Aluminum Core

#5

5. DNA Motoring Freightliner Radiator

• Weight: 57.9 lb

Best for: Freightliner Two-Row Aluminum Core.

Why it ranks #5: It specifies a 42-by-38.75-by-2.25-inch core, 2.5-inch inlet and outlet, and transmission oil cooler for listed Cascadia, Century Class, and Columbia trucks.

Its stated 42-inch-high, 383⁄4-inch-wide core gives the DNA MOTORING radiator a concrete fitment profile for selected Freightliner trucks. The two-row aluminum design and listed transmission oil cooler make it a replacement option for Cascadia, Century Class, and Columbia owners who can match the specified dimensions and applications.

DNA MOTORING lists compatibility with Freightliner Cascadia 2008–2012, Century Class 2009–2010, and Columbia 2008–2010. The 42-by-383⁄4-by-21⁄4-inch core dimensions and 21⁄2-inch inlet and outlet provide useful reference points when evaluating the truck’s radiator space and connections. Its two-row aluminum core uses a high-density fin design, described as improving cooling efficiency, and the transmission oil cooler is included; an engine oil cooler is not specified as present.

Skip it if you need an engine oil cooler integrated into the radiator; this listing specifies a transmission cooler and no engine oil cooler.

Consider it for owners of the listed Freightliner models who need a two-row radiator with transmission oil cooling. Check the stated core dimensions and 21⁄2-inch connections against the truck’s requirements, especially if an engine oil cooler is needed.

Listed on Amazon as: DNA MOTORING 2-Row Aluminum Radiator Compatible with 08-12 Freightliner Cascadia / 09-10 Century Class, 0526620003 0526620005 0527749003, OEM-RA-FL-010

#6

6. Auto Dynasty M2 Radiator

Best for: M2 And Business-Class Applications.

Why it ranks #6: Its two-row aluminum design and transmission oil cooler serve listed Freightliner M2 106, M2 112, 114SD, and several Sterling and Western Star models.

Wide-ranging Freightliner and Sterling fitment is the key feature of this Auto Dynasty radiator, covering M2 106 and 112 trucks alongside Business Class, 114SD, L-series, and Western Star applications. Its factory-style, two-row design with aluminum cooling fins provides a defined replacement approach for owners whose model and year appear in the list.

The listed applications include Freightliner Business Class M2 models from 2008–2012, M2 106 from 2008–2014, M2 112 from 2010–2014, and 114SD from 2012–2014, along with select Sterling and Western Star models. The two-row radiator has aluminum cooling fins and is described as a direct OE replacement with a transmission oil cooler. These features support a replacement decision based on both vehicle fitment and cooler configuration; installation instructions are not included.

Skip it if you need installation instructions included with the radiator; this listing recommends professional installation instead.

This is a candidate for owners of the listed Freightliner, Sterling, or Western Star applications seeking a factory-style two-row radiator with transmission oil cooler. Match the exact model year, and plan installation with the missing instructions in mind.

Listed on Amazon as: Auto Dynasty Radiator for 2008-2014 Freightliner Business Class M2 106/112

#7

7. Spectra Premium Complete Radiator

• Weight: 69 lb
• Dimensions: 44 x 29.25 x 12 in

Best for: Stress-Relief Radiator Construction.

Why it ranks #7: Side-rail stress-relief cuts, thicker tube walls, and redesigned corner brackets are specified, though the listing gives limited vehicle-fitment detail.

Side-rail stress-relief cuts set this Spectra Premium complete radiator apart by allowing thermal expansion and reducing stress on the headers. For Freightliner and Western Star owners evaluating a replacement, the construction details focus on durability, while redesigned corner brackets also address unit strength and installation handling.

The radiator combines side-rail cuts intended to accommodate thermal expansion with increased tube-wall thickness, which the listing connects to reduced header stress and greater durability. Redesigned corner brackets are another practical detail: they are described as improving unit durability and ease of installation. Spectra Premium also states that its products meet or exceed OE specifications. The supplied information does not give a specific model-year fitment range or core dimensions, so those details are not available here for vehicle-level comparison.

Skip it if you need vehicle-year fitment or core dimensions stated before selection; this listing provides neither detail.

This radiator may suit Freightliner or Western Star owners prioritizing expansion relief, thicker tube walls, and redesigned brackets. Because the supplied details omit model years and core dimensions, those application specifics remain a boundary for choosing it.

Listed on Amazon as: Spectra Premium 2101-1701 Complete Radiator for Freightliner/Western Star Models

#8 · Best Specified MT45 Replacement

8. ALLOYWORKS MT45 Radiator

• Weight: 33.9 lb
• Dimensions: 32.68 x 27.17 x 5.91 in

Best for: Welded Freightliner MT-Series Core.

Why it ranks #8: It lists MT45, MT55, and FLD112 fitment with core dimensions and 2 1/16-inch inlet and outlet sizes, plus welded aluminum construction.

Aircraft AA5052 aluminum, fully welded construction, and brazed-core technology define this ALLOYWORKS radiator for select Freightliner MT-series trucks. The listing’s core and connection measurements give buyers concrete checks for a replacement, while its named applications cover MT45, MT55, and 1998 FLD112 fitment.

The radiator is listed for Freightliner MT45 models from 2000–2008, MT55 from 1999–2002, and FLD112 for 1998. Its core measures 237⁄8 by 251⁄8 by 21⁄4 inches, with 2 1/16-inch inlet and outlet diameters, helping buyers compare space and hose connections. The AA5052 aluminum construction is fully welded and uses brazed-core technology without epoxy, according to the listing. Five checks are also specified for each radiator.

Skip it if you need an MT55 radiator for a year outside 1999–2002; the RADFLUX MT55 listing also covers 1999–2002 only.

This option suits owners of the listed Freightliner MT45, MT55, or FLD112 applications seeking a welded aluminum core. Compare its dimensions and 2 1/16-inch connections with the truck, and note the specific year limits for each model.

Listed on Amazon as: ALLOYWORKS Radiator For 2000-2008 Freightliner MT45, For 1999-2002 MT55,1998 FLD112 23 7/8"x 25 1/8", OEM 239308 FR40OC-PA 8000-15 332 FRE15 2002-1708 1003435

#9

9. RADFLUX MT45 Radiator

• Weight: 29.6 lb
• Dimensions: 32.68 x 5.12 x 26.38 in

Best for: MT45 And MT55 Aluminum Replacement.

Why it ranks #9: The two-row aluminum unit lists MT45 and MT55 applications, 2.05-inch inlet and outlet diameters, and an included cap.

A compact 24.02-by-25.20-inch core and included cap define the RADFLUX radiator for Freightliner MT-series applications. Its two-row aluminum construction offers a specified replacement configuration for MT45 and MT55 owners, while the broader listed fitment also covers select FL112, FLD112, Oshkosh, and Western Star applications.

The listing covers Freightliner MT45 models from 1998–2008 and MT55 models from 1999–2002, plus other named applications. A two-row core with 2.05-inch inlet and outlet diameters provides useful connection and layout information for evaluating replacement suitability. The included cap means that component comes with the radiator. The description identifies 3003 aluminum alloy and rapid heat dissipation as design attributes, connecting the material to thermal management in demanding operating conditions.

Skip it if you need an MT55 radiator for a model year after 2002; the AW ALLOYWORKS MT45/MT55 listing also ends its MT55 fitment at 2002.

This is a candidate for owners of listed Freightliner MT45 or MT55 years who want a two-row aluminum radiator with cap. Verify the year and connection details against the truck, particularly for MT55 applications ending in 2002.

Listed on Amazon as: Radiator for 1998-2008 Freightliner MT45 Freightliner MT55

#10

10. Eagle Volvo Mack Radiator

• Weight: 55 lb

Best for: Volvo And Mack Two-Row Fitment.

Why it ranks #10: It covers Volvo VN, VNL, and VNM plus Mack CX and CXN613 models, but specifies no oil cooler and requires the existing frame.

A two-row radiator with a stated 351⁄2-inch tank-to-tank core height is the central fitment detail for this Eagle unit. It is listed for Volvo VN, VNL, and VNM models and Mack CX and CXN613 models from 1998 onward, with right-side connections and no oil cooler.

The core is 35 inches wide across the fin area and 17⁄8 inches thick, with a 21⁄2-inch upper-right inlet and lower-right outlet. These measurements help buyers assess the radiator’s dimensions and hose routing, while the listing specifies that it is for use with the existing frame. It is compatible with the named Volvo and Mack model families from 1998 onward, but does not have an oil cooler, making that configuration an important selection boundary.

Skip it if you need an oil cooler integrated into the radiator; the listed Eagle unit does not have one.

This radiator suits owners of listed Volvo VN, VNL, or VNM and Mack CX or CXN613 models from 1998 onward, using the existing frame. Confirm the right-side connection layout and choose another configuration if an oil cooler is required.

Listed on Amazon as: Radiator Compatible With Volvo VN VNL VNM Models & Mack CX CXN613 Model Trucks With Part Numbers Listed