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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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 EnginesChanging 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...$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 -
BESTfit Flywheel SAE 1 Replaces 23514177, 23511177 & 23509709 For Detroit 60 Series
BESTFIT TRUCK PARTS
$419.99BESTfit Flywheel With 10 Inch Opening, 20 Inch OD Ring Gear With 118 TeethIntroducing our aftermarket flywheel, a reliable replacement for Detroit's Series 60 Lightweight Flywheel. Designed to exact specifications, it features a flat surface with a...$419.99 -
BESTfit Steel Oil Pan For Cummins ISX Engines - Replaces 3680531 & 3687414
BESTFIT TRUCK PARTS
$357.95BESTfit 10-12 Gallon Oil Pan Fits Cummins ISX EnginesIntroducing our Stamped Steel Oil Pan, engineered with a capacity of 10 to 12 gallons to accommodate various truck models and applications. This versatile pan is designed for both front and rear sump...$357.95 -
BESTfit Aluminum Flywheel Housing, Replaces 4026795 For Cummins ISX
BESTFIT TRUCK PARTS
$729.99BESTfit Flywheel Housing Fits Cummins ISX Engines 2000-2012Presenting our Cast Aluminum Flywheel Housing, meticulously crafted to ensure durability and reliability. Featuring a robust 20-inch ring gear and a starter location positioned at the driver's...$729.99 -
BESTfit Flywheel Housing Replaces 1084749, 1302802 & 3044150 For CAT 3406E
BESTFIT TRUCK PARTS
$999.99BESTfit Flywheel Housing Fits CAT 3406EIntroducing our Flywheel Housing, crafted from durable aluminum for reliability and performance. With a 20-inch ring gear and a starter location positioned at the driver's side, 9 o'clock angle. Designed with angled...$999.99 -
BESTfit Front Engine Cover For Cummins N-14 Models
BESTFIT TRUCK PARTS
$506.99BESTfit N-14 Cummins Front Engine Cover For Tilt Engine ApplicationElevate your vehicle's engine with our aftermarket replacement engine cover, specifically crafted for tilt engine applications. Please note that for proper installation in tilt engine...$506.99