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 Valve Side Camshaft For Cummins ISX With Single Camshafts - Replaces 3685964, 4298629
BESTFIT TRUCK PARTS
$929.99Looking to replace your injector side camshaft? Our aftermarket replacement part is tailored for ISX model engines with a dual camshaft setup, specifically serving as an injector camshaft. With no core required, this camshaft is sold individually and...$929.99 -
BESTfit Injector Side Camshaft For Cummins ISX With Dual Camshafts - Replaces 3682142, 4101432
BESTFIT TRUCK PARTS
$1,131.99BESTfit Camshaft For Dual Camshaft Cummins ISX Engine - Injector SideLooking to replace your injector side camshaft? Our aftermarket replacement part is tailored for ISX model engines with a dual camshaft setup, specifically serving as an injector...$1,131.99 -
BESTfit Valve Side Camshaft For Cummins ISX With Dual Camshafts - Replaces 3680779, 4059170, 4059331, 4298626
BESTFIT TRUCK PARTS
$799.99BESTfit Camshaft For Dual Camshaft Cummins ISX Engine - Valve SideLooking for a replacement camshaft? Our aftermarket replacement part is precisely what you need. Designed as a dual camshaft for valve side applications in aftermarket Cummins ISX engines,...$799.99 -
BESTfit O-Ring Kit With Gaskets, Sealing Washers - 2 Of Each Size Seal
BESTFIT TRUCK PARTS
$22.43BESTfit O-Ring, Gasket & Seal Kit * High Quality O-Ring Kit * 2 Of Each Size Seal* Refrigerant Type: R12/R134A* Sold Individually* Warranty On O-Ring Kit Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...$22.43 -
BESTfit 8.875 X 7.875 X 1.1875 Inch Paper Cabin Air Filter Replaces X1987001, 4070948C1 For PACCAR HVAC
BESTFIT TRUCK PARTS
$18.35BESTfit Paper Cabin Air Filter Fits Peterbilt & Kenworth HVACLooking for a replacement in-cab filter? Our aftermarket replacement part is designed to fit your needs. With dimensions of 7 7/8 inches in length, 8 7/8 inches in height, and 1 3/16 inches in...$18.35 -
BESTfit AC Refrigerant PAG 100 Oil - 8 Oz.
AFTERMARKET
$14.27BESTfit 100 Viscosity PAG Oil For A/C * High Quality Oil* 8 Oz * Sold Individually* Warranty On Oil Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)***width="1293" height="300" />$14.27 -
BESTfit 70 Amp 12V 4 Terminal Carrier Relay With Diode Protection - Replaces 10-00328-00
BESTFIT TRUCK PARTS
$27.53BESTfit 12V SPDT 70 Amp 4 Terminal Carrier Relay * High Quality Relay* Volts: 12V* Type: Spdt N.O.* Amps/Cfm/Btus: 70 Amp* Notes: 4 Terminal 2 Large 2 Small* Diode Protection: W/Diode* Sold Individually* Warranty On Relay Against Defects In Workmanship &...$27.53 -
BESTfit AC Compressor Sanden Style Single Groove 158MM Clutch With Single Wire Ear Mount
BESTFIT TRUCK PARTS
$217.99BESTfit Sanden Style AC Compressor With Single Groove 158MM Clutch & Single Wire Ear Mount * High Quality A/C Compressor* Single Groove 158MM Clutch * Single Wire Ear Mount* Sold Individually* Warranty On A/C Compressor Against Defects In Workmanship &...$217.99 -
BESTfit AC Compressor With Clutch Sanden SD7H15 4627 With 2 Groove Pulley
BESTFIT TRUCK PARTS
$192.99BESTfit AC Compressor With Ear-Mount - Replaces ABPN83304382, LE1145, 4379RD571200 & F696002233 * High Quality A/C Compressor* With Clutch * 2 Groove Pulley * Single Wire Connector * CW Rotation* R134A Refrigerant * JD Cylinder Head* 40 MM Gauge Line *...$192.99 -
BESTfit 12V Electric Heater Valve Replaces MA1685 For Peterbilt, Kenworth
BESTFIT TRUCK PARTS
$234.99BESTfit Electric Operated Heater Valve With 5/8 Inch Outlet Fits PACCAR * High Quality Electric Heater Valve* 12 Volts* 5/8 Inch * New Style Valve Effective 2014* Sold Individually* Warranty On Electric Heater Valves Against Defects In Workmanship &...$234.99 -
BESTfit High Pressure Switch 300 PSI Open, 200 PSI Close - Replaces 404141
BESTFIT TRUCK PARTS
$47.93BESTfit High Pressure Switch With Wire Harness & Female 1/4 Inch Thread * High Quality High Pressure Switch* Application: Multi Fit Applications* Description: High Pressure Switch -Nc* Wire Type: With Harness* Type Of Operation: N.C. Open-300PSI...$47.93 -
BESTfit Binary Switch With 2 Terminals, High 270/120, Low 15/40 - Replaces RD5-4640-0
BESTFIT TRUCK PARTS
$63.03BESTfit Female Binary Switch For Red Dot Applications With 2 Terminals * High Quality Binary Switch* Manufacturer: Red Dot* Application: Red Dot - Multi Applications* Description: Binary Switch: Female* Type Of Operation: High= 270/120 Low=15/40* Product...$63.03