Semi-Truck Engine Parts
Explore a diverse range of new semi-truck engine parts at 4 State Trucks. Discover quality OE and aftermarket replacement filters, belts, sensors, flywheel components, and more online to ensure your engine runs smoothly. Elevate your truck's engine with our quality parts today!
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1500 Watt Block Heater For Cummins Signature 600 ISX & QSX
OPP - ORIGINAL PARTS PROGRAM
$94.59Block Heater * High Quality Block Heater* 1500 Watt With Plug* Plate Mount* 120 Volt* Fits Cummins Signature 600 ISX QSX * Gasket Not Included* Reuse Old Gasket* Sold Individually* Warranty On Block Heater Against Defects In Workmanship & Material From...$94.59 -
Cover Kit With Screws For Eaton-Fuller RTLO Transmissions - Replaces K2402
OPP - ORIGINAL PARTS PROGRAM
$19.42Cover Kit for Eaton-Fuller RTLO Transmissions * High Quality Cover Kit* With Screws* Replaces OEM # K2402* Sold Individually* Warranty On Cover Kit Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement...$19.42 -
Seal With Bearing Retainer-Electric For Eaton-Fuller RTLO & FRO Transmission - Replaces K2918
OPP - ORIGINAL PARTS PROGRAM
$47.89Seal for Eaton Fuller RTLO and FRO Transmissions * High Quality Seal* With Bearing Retainer-Electric* Replaces OEM # K2918* Sold Individually* Warranty On Seal Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...$47.89 -
Nut For Output Shaft Eaton-Fuller RTLO & FRO Transmission - Replaces K4122
OPP - ORIGINAL PARTS PROGRAM
$36.89Nut Output Shaft * High Quality Nut Output Shaft* Output Shaft For Eaton-Fuller RTLO And From Transmissions* Replaces OEM # K4122* Sold Individually* Warranty On Nut Output Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High...$36.89 -
Yoke Transmission Output 1810 1/2 Round - Replaces 6.5-4-4631-1
OPP - ORIGINAL PARTS PROGRAM
$189.99Yoke Transmission Output * High Quality Yoke Transmission Output* 1810 1/2 Round* Replaces OEM # 6.5-4-4631-1* Sold Individually* Warranty On Yoke Transmission Output Against Defects In Workmanship & Material From Date Of Purchase*** High...$189.99 -
Yoke Transmission Output 1760 1/2 Round - Replaces 6.3-4-1681-1
OPP - ORIGINAL PARTS PROGRAM
$253.99Yoke Transmission Output * High Quality Yoke Transmission Output* 1760 1/2 Round* Replaces OEM # 6.3-4-1681-1* Sold Individually* Warranty On Yoke Transmission Output Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...$253.99 -
Exhaust Manifold Kit For Caterpillar C15 Engines - Replaces 150-1914 & 133-3359
DAYTON / DORMAN
$659.99Caterpillar C15 Exhaust Manifold KitThe Exhaust Manifold Kit for Trucks with Caterpillar C15 Engine is here! It includes 1 Center Section, 2 End Sections, and 4 Turbo Mounting Bolts. This leak-resistant kit ensures long-lasting performance, replacing...$659.99 -
EGR Valve Replaces 4955421 For Cummins ISM 10.8L
BESTFIT TRUCK PARTS
$773.99EGR Valve Fits Cummins ISM 10.8 Liter 2003-2007The EGR valve is a direct replacement for part number 4955421, designed for the Cummins ISM 10.8L engine. It effectively re-circulates exhaust gas for re-burning in the intake manifold. This valve withstands...$773.99 -
Heavy Duty EGR Cooler Gasket Kit Replaces 4309380NX For Cummins ISM 10.8L
DAYTON / DORMAN
$103.99EGR Cooler Head Gasket Kit For Cummins ISM 10.8L 2002-2006 This EGR Cooler Gasket Kit Contains All The Gaskets And O-Rings You Need For A Complete Repair Of The EGR Cooler. The Kit May Also Be Used For A Variety Of Other Automotive Repairs, Including...$103.99 -
EGR Cooler Heavy Duty Gasket Kit Replaces 4309434NX For Cummins ISX 15L
DAYTON / DORMAN
$114.99EGR Cooler Head Gasket Kit Fits Cummins ISX 15L 2003-2007 This EGR Cooler Gasket Kit Contains All The Gaskets And O-Rings You Need For A Complete Repair Of The EGR Cooler. The Kit May Also Be Used For A Variety Of Other Automotive Repairs, Including...$114.99 -
Clutch Brake Spicer Style 1 Piece
AFTERMARKET
$47.93Clutch Brake Spicer Style 1 Piece * High Quality Clutch Brake * 1 Piece Torque Limiting* Sold Individually* Warranty On Clutch Brake Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...$47.93 -
15.5 Inch Diameter Clutch Assembly
AFTERMARKET
$986.99Clutch AssemblyFeaturing a 15.5-inch diameter and a 2-inch 10 spline, this easy pedal Clutch Assembly offers a torque rating of 2250 pounds without requiring a core. It also incorporates a Pedal Assist feature that actively reduces foot pedal effort by...$986.99