Engine Parts

BESTfit AC Compressor Fits Western Star 4900 - Replaces 1521853, 1521894, ABPN83304372, SK14626, LE1140, 4626SAN & 611043420* High Quality A/C Compressor* 2 Groove 132Mm Clutch* Direct Mount* Sold Individually* Warranty On A/C Compressor Against Defects...

BESTfit 2 Row Radiator W/ Out Frames your truck overheating? 4 State Trucks has got you covered. Cool it down and enjoy a radiator that will save you money. Choose a dependable and affordable option that will have a premium performance while still saving...

BESTfit Western Star 4900EX & 49100FX Constellation RadiatorEnhance your Western Star truck's cooling with this precision-fit radiator. Reliable performance and durability for optimal operation.* High Quality Plastic Aluminum Radiator* Inches Core Size-...

BESTfit Charge Air Cooler Kit Fits Western Star* High Quality Charge Air Cooler* Inches Core Size  - 38.125 Height  - 29.000 Width  - 2.250 Core Thickness  - 4.000 Inlet  - 4.000 Outlet* Sold Individually* Warranty On Charge Air...

BESTfit 4 Row Metal Radiator With FrameIs your radiator malfunctioning? If your truck is overheating, the radiator might be the problem, which 4 State Trucks can help with. Being an affordable option, you still get the premium performance and...

BESTfit Charge Air Cooler Kit Fits Western Star* High Quality Charge Air Cooler* Inches Core Size  - 34.000 Height  - 21.250 Width  - 2.500 Core Thickness  - 4.000 Inlet  - 4.000 Outlet* Sold Individually* Warranty On Charge Air...

BESTfit 4 Row Radiator Kit W/ Hoses, Clamps & BushingsIs your truck overheating? 4 State Trucks has got you covered. Cool it down and enjoy a radiator that will save you money. Choose a dependable and affordable option that will have a premium...

BESTfit AC Evaporator For Western Star Sleepers* High Quality AC Evaporator* 8.0 Inch Width* 3.5 Inch Depth* 9.0 Inch Height* 0.48 Inch Inlet* 0.48 Inch Outlet* Sold Individually* Warranty On AC Evaporators Against Defects In Workmanship & Material From...

BESTfit Charge Air Cooler Fits Western Star* High Quality Charge Air Cooler* For Standard CAC Use 14-070103* Core Size  - 35.500 Inch Height  - 24.625 Inch Width  - 2.500 Inch Core Thickness  - 4.000 Inch Inlet   - 4.000 Inch...

BESTfit AC Condenser 35.625 Inch x 18.25 Inch For Western Star 4964 Constellation/Heritage* High Quality Air Conditioner Condenser* Core Size  - 35.625 Inch Height  - 18.250 Inch Width  - 1.375 Inch Core Thickness * With Standard Fittings*...

BESTfit Charge Air Cooler Fits Western Star* High Quality Charge Air Cooler* Inches Core Size  - 38.125 Height  - 29.000 Width  - 2.250 Core Thickness  - 4.000 Inlet  - 4.000 Outlet* Sold Individually* Warranty On Charge Air...

BESTfit Charge Air Cooler Fits Western Star 6900XD - Replaces 0133538000, 1E0067770000 MOD1E67770000* High Quality Charge Air Cooler* Reduces Air Inlet Temperature To Increase Air Density For Increased Engine Efficiency* Installs Between The Turbo...