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 Sanden 4664 AC Compressor With 132MM 2 Groove Clutch With Vertical Port, Long Key Shaft
BESTFIT TRUCK PARTS
$339.99BESTfit 12V AC Compressor With 1 Wire Male Packard, Male Insert O-Ring & 7 CylindersThis BESTfit AC compressor has a 2 groove design and a clutch diameter of 132mm. It features 7 cylinders and a fitting style of male insert o-ring #8 and #10. The...$339.99 -
BESTfit York Style 6 Inch Diameter 2 Groove AC Compressor Clutch Assembly - Replaces 024-25238
BESTFIT TRUCK PARTS
$136.99BESTfit 12V AC Clutch Assembly With 2 - 1/2 Inch Belts & Keyed Shaft * High Quality AC Clutch* 12 Volts* 2 Wats* 2 Groove* (2) 1/2 Inch Belt Type* 2 Wire Metripack Wire Type* Keyed Shaft* W/ Diode* Sold Individually* Warranty On AC Clutchs Against...$136.99 -
BESTfit York Style 6 Inch Diameter 2 Groove AC Compressor Clutch Assembly - Replaces 501939, 14192, 024-21590
BESTFIT TRUCK PARTS
$111.99BESTfit 12V AC Clutch Assembly With 2 - 1/2 Inch Belts & Keyed Shaft * High Quality AC Clutch* 12 Volts* 2 Groove* (2) 1/2 Inch Belt Type* 1 Wire Weatherpak Wire Type* Keyed Shaft* W/ Diode* Sold Individually* Warranty On AC Clutchs Against Defects In...$111.99 -
BESTfit Fuel Check Valve For 12.7L Detroit Diesel Engine
BESTFIT TRUCK PARTS
$66.70BESTfit 12.7L Detroit Diesel Engine Fuel Check Valve * High Quality Fuel Check Valve* Sold Individually* Warranty On Fuel Check Valves Against Defects In Workmanship & Material From Date Of Purchase.*** High Quality Aftermarket Replacement Part (Not OEM)...$66.70 -
On Sale
BESTfit Blue 0.75 Inch Inner Diameter Silicone Heater Hose - 25 Feet
BESTFIT TRUCK PARTS
Now: $65.68Was: $93.83Blue Silicone Heater Hose - 0.75 Inch X 25 Feet * High Quality Heater Hose* Made Of Silicone* Blue* 0.750 Inch ID * 25 Feet* Cut To Length * Sold Individually* Warranty On Heater Hose Against Defects In Workmanship & Material From Date Of Purchase***High...Now: $65.68Was: $93.83 -
BESTfit Blue 0.625 Inch Inner Diameter Silicone Heater Hose - 25 Feet
BESTFIT TRUCK PARTS
$70.37BESTfit Blue Silicone Heater Hose - 0.625 Inch X 25 Foot * High Quality Heater Hose* Made Of Silicone* Blue* 0.625 Inch ID * 25 Feet* Cut To Length * Sold Individually* Warranty On Heater Hose Against Defects In Workmanship & Material From Date Of...$70.37 -
BESTfit Blue 0.5 Inch Inner Diameter Silicone Heater Hose - 25 Feet
BESTFIT TRUCK PARTS
$79.55BESTfit Blue Silicone Heater Hose - 0.5 Inch X 25 Foot * High Quality Heater Hose * Silicone* Blue * 0.500 Inch I.D.* 25 Feet* Sold Individually * Warranty On Heater Hose Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...$79.55 -
BESTfit Blue 0.25 Inch Inner Diameter Silicone Heater Hose - 25 Feet
BESTFIT TRUCK PARTS
$54.56BESTfit Blue Silicone Heater Hose - 0.25 Inch X 25 Foot * High Quality Heater Hose* Silicone * Blue * 0.25 I.D. * 25 Feet * Sold Individually * Warranty On Heater Hose Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...$54.56 -
BESTfit 4 PSI Kick-Off Low Air Switch With 1/8-27 NTP Thread, 2 Blade Connector - Replaces FSC-1749-2134
BESTFIT TRUCK PARTS
$7.33BESTfit Low Air Pressure Switch With 2-6 Lb. Cutoff & Thread Sealant * High Quality Air Pressure Switch * Specifications: - 4 PSI - 2 - 6 Lb. Cutoff- 1/8 - 27 NTP Connecting Thread- 2 Blade Connector - Thread Sealant * Sold Individually *...$7.33 -
BESTfit Normally Open Stop Lamp Switch With 1/8-27 NTP Thread, 2 Blade Connector - Replaces FSC-1749-1907
BESTFIT TRUCK PARTS
$12.23BESTfit 65 PSI Actuation, 75 PSI Deactuation Stop Lamp Switch * High Quality Stop Lamp Switch * Connecting Thread 1/8-27 NTP* 2-Blade Connector Type * Actuation: 65 PSI* Deactuation: 75 PSI * Threaded Sealant * Total Part Length 2.25 Inches * Sold...$12.23 -
BESTfit Single Overhead Camshaft Setup For Cummins ISX15 Cylinder Head - Replaces 3688761, 4386009
BESTFIT TRUCK PARTS
$6,570.99BESTfit Cummins ISX15 Cylinder Head For Single Overhead CamshaftThe Overhead Camshaft Setup offered is an aftermarket Cummins ISX15 Cylinder Head Complete with a dual overhead camshaft setup. Sold individually, this replacement part, not OEM,...$6,570.99 -
BESTfit Dual Overhead Camshaft Setup For Cummins ISX15 Cylinder Head - Replaces 5413782, 4331387, 3683986, 3683002
BESTFIT TRUCK PARTS
$5,402.99BESTfit Cummins ISX15 Cylinder Head For Dual Overhead CamshaftThe Overhead Camshaft Setup is an aftermarket Cummins ISX15 Cylinder Head complete with a dual overhead camshaft setup, made of iron, and sold individually. It serves as a replacement part,...$5,402.99