GMC Sierra 3500 HD Radiator Replacement

Auxiliary Radiator

with 34" x 1" Core; w/o EOC

Check the cooler line fittings to ensure they fit your vehicle. This part is for vehicles with an automatic transmission and a 6.0L or 6.2L engine. It fits vehicles without a 3.73 axle ratio.

Condition: Excellent (A)
Mileage: 136,000 miles

with 34" x 17" x 1" Core; w/ TOC w/ EOC

It measures 17-1/4 inches by 34 inches by 1-1/16 inches. This part fits vehicles with a 3.73 rear axle (option code GT4), a 4.10 rear axle (option code GT5), or an engine oil cooler (option code KC4). It also fits vehicles with a manual transmission.

Condition: Excellent (A)
Mileage: 165,000 miles

The core dimensions are 18-1/2 inches by 34 inches by 1-1/8 inches.

Condition: Excellent (A)
Mileage: 143,000 miles

Applies to 2020 and 2021 models.
Requires the 6.6 Liter Diesel Engine.
Must be the Auxiliary radiator.
OEM # 84098260

For vehicles with the 5.7L engine and automatic transmission. This radiator includes an engine oil cooler. It measures 17x34x1-3/8 inches. This part has a greater cooling capacity.

Condition: Excellent (A)
Mileage: 107,900 miles

w/o Engine Oil Cooler w/ Plate Type Transmission Oil Cooler w/ 34 in. Core Length w/ Upgraded Heavy Duty 1 1/4 in. Core Thickness

with 34" x 23" x 7/8" Core

This fits models equipped with the 6.0 Liter or 6.2 Liter Engine.
It includes the Engine Oil Cooler.
OEM #: 22840116

w/ 34 in x 17-1/4 in x 1 in Core w/ TOC (Transmission Oil Cooler) w/ EOC (Engine Oil Cooler)

For vehicles with the 6.0L engine.

Condition: Good (B)
Mileage: 138,000 miles

w/ 34 in. x 17-1/2 in. x 1 in. Core; w/ TOC (Transmission Oil Cooler); w/ EOC (Engine Oil Cooler)

34" WIDE; 1 1/4" THICK; wo/ EOC; Enhanced Unit Premium Version

Condition: Excellent (A)
Mileage: 110,600 miles

Condition: Excellent (A)
Mileage: 148,000 miles

Without Engine Oil Cooler With 34 inch Core

Platinum Pro Part

w/ quick-connect outlet pipe & oil cooler fittings

1-1/4" Core Thickness; w/ TOC w/ EOC HD Cooling

34" WIDE; 1" THICK; w/ EOC Premium Version

This is a complete assembly.

23 1/4" Wide; w/EOC; Enhanced Unit Premium Version

With Engine Oil Cooler And Transmission Oil Cooler With 34 inch Core

with transmission oil cooler with engine oil cooler ; Platinum Pro Part

External Oil Cooler

Platinum Pro Part

This part is the lower auxiliary unit.

Condition: Good (B)
Mileage: 177,000 miles

For 6.6 Liter Turbo models.
OEM # 84224661

Standard Radiator

Platinum Pro Part

It fits vehicles with the 6.6L turbo diesel engine and automatic transmission. The radiator core measures 29.50 inches by 25.75 inches.

Condition: Excellent (A)
Mileage: 45,400 miles

This radiator is compatible with the 6.6 Liter Gas Engine.
The OEM number is 84565799.

This is a brand new aftermarket replacement part. This radiator is compatible with vehicles equipped with a 6.0L engine.

Condition: Excellent (A)

Main Radiator

This part is for gasoline engines.

Condition: Excellent (A)

Platinum Pro Part

3-Row; 1 5/16 in. Inlet; 1 9/16 in. Outlet; 21 3/8 x 40 1/2 in. Overall; Saddle Mount

This engine cooling radiator is an original equipment manufacturer (OEM) part.

Condition: Excellent (A)

Condition: Excellent (A)
Mileage: 99,000 miles

This is a brand new aftermarket replacement part. This radiator is compatible with vehicles equipped with the 6.6L diesel engine.

Condition: Excellent (A)

Applies to 2020 and 2021 models.
Requires the 6.6 Liter Diesel Engine.
OEM # 84799449

This is the upper main radiator.

Condition: Good (B)
Mileage: 71,000 miles

For vehicles with the 6.6L diesel engine and automatic transmission. This is the upper main radiator for vehicles equipped with air conditioning.

Condition: Excellent (A)
Mileage: 51,000 miles