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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On Sale
BESTfit AC Compressor With Clutch For Freightliner, Sterling & Ford
BESTFIT TRUCK PARTS
Now: $53.28Was: $295.99BESTfit AC Compressor With 8 Groove Clutch Assembly for Freightliner & Ford * High Quality AC Compressor* Replaces Sanden Type SD7H15* Sold Individually* Warranty On AC Compressors Against Defects In Workmanship & Material From Date Of Purchase*** High...Now: $53.28Was: $295.99 -
BESTfit 90 Degree Oil Drain Valve Hose Adapter
BESTFIT TRUCK PARTS
$20.39BESTfit Oil Drain Valve Hose AdapterIntroducing our 90 Degree Oil Drain Valve Hose Adapter, a convenient aftermarket replacement part designed to screw into drain valves, providing a slide-on hose hookup. This adapter is compatible with the following...$20.39 -
BESTfit Oil Drain Valve Hose Adapter Straight
BESTFIT TRUCK PARTS
$14.27BESTfit Oil Drain Valve Hose AdapterIntroducing our Oil Drain Valve Hose Adapter, designed to fit the following valves: 29-072000, 29-072001, 29-072002, 29-072005, 29-072006, and 29-072007. Each adapter is sold individually, ensuring compatibility and...$14.27 -
BESTfit EZ Oil Drain Valve For Caterpillar Acert Engines
BESTFIT TRUCK PARTS
$56.09BESTfit EZ Oil Drain Valve For CAT Acert Engines Changing your oil is made easier with the EZ Oil Drain Valve. Unlike spring-assisted gate valves, EZ Oil?s ball valve design allows for straight flow and fast drainage and is rated and tested up to 250 PSI...$56.09 -
BESTfit EZ Oil Drain Valve For Cummins, International, Mack & Volvo Engines
BESTFIT TRUCK PARTS
$56.09BESTfit EZ Oil Drain Valve For Cummins ISX, QSX15, NaviStar MaxxForce 13 & 15, Mack M-P10 & Volvo D-16 Engines Changing your oil is made easier with the EZ Oil Drain Valve. Unlike spring-assisted gate valves, EZ Oil?s ball valve design allows for...$56.09 -
BESTfit EZ Oil Drain Valve For Caterpillar 3304, 3306, 3406, 3408, 3412, 3456, 3176, 3126 & C10-C18 Engines
BESTFIT TRUCK PARTS
$56.09BESTfit EZ Oil Drain Valve Fits C-10, C-11, C-12, C-13, C-15, C-16 & C-18 Engines Changing your oil is made easier with the EZ Oil Drain Valve. Unlike spring-assisted gate valves, EZ Oil?s ball valve design allows for straight flow and fast drainage...$56.09 -
On Sale
BESTfit AC Compressor With Clutch Replaces ABP N83 304543QS For Freightliner & Western Star
BESTFIT TRUCK PARTS
Now: $216.29Was: $308.99BESTfit AC Compressor With 8 Groove Clutch Assembly for Peterbilt, Freightliner & Sterling * High Quality AC Compressor* Refrigerant Type- R134A* Compatible Refrigerant Oil Type - PAG 46* Oil Filled- Yes* Pulley Groove Quantity- PV8* Terminal Type- Pin*...Now: $216.29Was: $308.99 -
BESTfit Aluminum Flywheel Housing For Cummins L10, M11 & ISM
BESTFIT TRUCK PARTS
$733.99BESTfit Flywheel SAE 2 With 17 Inch RingUpgrade your Cummins engine with our Aluminum Flywheel Housing designed to fit models L10, M11, and ISM. Featuring an SAE #1 size and compatible with SAE #2 17-inch ring flywheels (not included), this housing...$733.99 -
BESTfit Aluminum Flywheel Housing With 14MM Mounting Holes For Detroit 60 Series Engines
BESTFIT TRUCK PARTS
$893.99BESTfit Aluminum Flywheel Housing, Replaces 23522643Upgrade your engine with our aluminum Flywheel Housing! Specifically designed for use with the Detroit 60 Series, this aftermarket replacement part features 0.55-inch mounting holes and compatibility...$893.99 -
BESTfit Aluminum Flywheel Housing With 12MM Mounting Holes For Detroit 60 Series Engines
BESTFIT TRUCK PARTS
$614.99BESTfit Aluminum Flywheel Housing, Replaces 23505073Upgrade your engine with our aluminum Flywheel Housing! Designed for use with the Detroit 60 Series, this aftermarket replacement part boasts 0.47-inch mounting holes and SAE #1 20" ring gear...$614.99 -
BESTfit Front Sump Oil Pan Gasket For Cummins N14
BESTFIT TRUCK PARTS
$19.99BESTfit Front Sump Oil Pan GasketSeal your Cummins Front Sump N14 oil pan with our oil pan gasket! This aftermarket replacement part is designed to fit seamlessly and ensure a reliable seal. Sold individually, it offers a cost-effective solution for...$19.99 -
BESTfit Aluminum Flywheel Housing For Caterpillar C13 With 14MM Mounting Holes
BESTFIT TRUCK PARTS
$948.99BESTfit SAE #1 Flywheel With Driver Side Starter LocationUpgrade your Caterpillar C13 engine with our aluminum flywheel housing! Specifically designed to fit the C13 model, this aftermarket replacement part features 14mm mounting holes and conforms to...$948.99