Semi-Truck Engine Parts

Semi-Truck Engine Parts

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 EGR Cooler For International NaviStar With Maxx Force 9, 10 & 11 BESTfit EGR Cooler For International NaviStar With Maxx Force 9, 10 & 11
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    BESTfit EGR Cooler For International NaviStar With Maxx Force 9, 10 & 11

    BESTFIT TRUCK PARTS

    Now: $224.24
    Was: $752.99
    BESTfit Exhaust Side EGR Cooler * High Quality EGR Cooler * Fits Aftermarket MaxxForce And Aftermarket International / Navistar Diesel Engine Trucks.* Engine Years: 2008-2014* Exhaust Side* Sold Individually***High Quality Aftermarket Replacement Part...
    Now: $224.24
    Was: $752.99
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    Now: $224.24
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  • BESTfit 3 Piece Exhaust Manifold Kit For Cummins NT855 Late Style, Small Cam, Big Cam, I, II, III, IV & Nt88 BESTfit 3 Piece Exhaust Manifold Kit For Cummins NT855 Late Style, Small Cam, Big Cam, I, II, III, IV & Nt88
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    BESTfit 3 Piece Exhaust Manifold Kit For Cummins NT855 Late Style, Small Cam, Big Cam, I, II, III, IV & Nt88

    BESTFIT TRUCK PARTS

    $399.99
    BESTfit Exhaust Manifold - Replaces 3801915, 3053137, 3053138 & 3052859The NT855 Exhaust Manifold kit offers comprehensive coverage, including front, center, and rear sections, along with a mounting kit for convenient installation. Designed without...
    $399.99
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    BESTfit AC Compressor W/ Clutch Direct Mount For Dennis Eagle 7H15 BESTfit AC Compressor W/ Clutch Direct Mount For Dennis Eagle 7H15
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    BESTfit AC Compressor W/ Clutch Direct Mount For Dennis Eagle 7H15

    BESTFIT TRUCK PARTS

    Now: $56.16
    Was: $207.99
    BESTfit 10 Groove AC Compressor W/ Single Wire Diode With KCA Head   * High Quality AC Compressor* Direct Mount* 10 Groove 125MM Clutch* Single Wire With Diode With KCA Head* Sold Individually* Warranty On AC Compressors Against Defects In...
    Now: $56.16
    Was: $207.99
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    Now: $56.16
    Was: $207.99
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  • BESTfit 4 Inch ID X 6 Inch 4-Ply Heavy Duty Silicone Charge Air Cooler Hose BESTfit 4 Inch ID X 6 Inch 4-Ply Heavy Duty Silicone Charge Air Cooler Hose
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    BESTfit 4 Inch ID X 6 Inch 4-Ply Heavy Duty Silicone Charge Air Cooler Hose

    BESTFIT TRUCK PARTS

    $54.05
    BESTfit 4 X 6 Inch Silicone Charge Air Cooler Hose -65 Degree to 500 DegreeThe Charge Air Cooler is a robust component designed for reliable performance. With a 4-inch inner diameter and 6-inch length, this blue silicone hose is specifically crafted for...
    $54.05
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    $54.05
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  • BESTfit 12V AC Compressor W/ Single Wire Ear Mount And Single Groove Clutch BESTfit 12V AC Compressor W/ Single Wire Ear Mount And Single Groove Clutch
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    BESTfit 12V AC Compressor W/ Single Wire Ear Mount And Single Groove Clutch

    BESTFIT TRUCK PARTS

    $236.99
    BESTfit Single Wire Ear Mount AC Compressor W/ Single Groove Clutch * High Quality AC Compressor* Single Wire Ear Mount* With 1 Groove Clutch * 12V* Sold Individually* Warranty On AC Compressors Against Defects In Workmanship & Material From Date Of...
    $236.99
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    $236.99
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  • BESTfit 11.9L Oil Pan Replaces 4975061 & 4975062 For Cummins ISX Front & Rear Sump BESTfit 11.9L Oil Pan Replaces 4975061 & 4975062 For Cummins ISX Front & Rear Sump
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    BESTfit 11.9L Oil Pan Replaces 4975061 & 4975062 For Cummins ISX Front & Rear Sump

    BESTFIT TRUCK PARTS

    $488.99
    BESTfit 11.9L Oil Pan Fits Cummins ISX The 11.9L Oil Pan is tailored to fit Cummins ISX 11.9L engines, offering a universal fit suitable for both front and rear sump applications. Compatible with various truck makes and models, this oil pan ensures...
    $488.99
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    $488.99
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  • BESTfit Sanden Style AC Compressor W/ 6 Groove Clutch
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    BESTfit Sanden Style AC Compressor W/ 6 Groove Clutch

    BESTFIT TRUCK PARTS

    $232.99
    BESTfit Ear Mount AC Compressor * High Quality AC Compressor* With Sanden Style * 6 Groove Clutch * 2 Wire 12V * Ear Mount* Sold Individually* Warranty On AC Compressors Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    $232.99
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    $232.99
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  • BESTfit 12V AC Compressor W/ Single Wire And Single Groove Clutch
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    BESTfit 12V AC Compressor W/ Single Wire And Single Groove Clutch

    BESTFIT TRUCK PARTS

    $239.99
    BESTfit Single Wire AC Compressor W/ Single Groove Clutch * High Quality AC Compressor* Single Groove * 158 Mm Clutch * 12V* Single Wire* Sold Individually* Warranty On AC Compressors Against Defects In Workmanship & Material From Date Of Purchase***...
    $239.99
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    $239.99
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  • BESTfit A/C Compressor Sanden SD7H15 W/ 8 Groove Clutch
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    BESTfit A/C Compressor Sanden SD7H15 W/ 8 Groove Clutch

    BESTFIT TRUCK PARTS

    $206.99
    BESTfit AC Compressor Sanden SD7H15 * High Quality AC Compressor* Ear Mount* With 8 Groove Clutch* 12Volt* 2 Wire Plug* OEM Number 1804173, 1804178, F696001211, And F696002212 5361* Sold Individually* Warranty On AC Compressors Against Defects In...
    $206.99
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    $206.99
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  • BESTfit AC Trinary Pressure/Fan Override Switch - Normally Closed, Replaces OEM Numbers 71R-7650, RD5-4625-0
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    BESTfit AC Trinary Pressure/Fan Override Switch - Normally Closed, Replaces OEM Numbers 71R-7650, RD5-4625-0

    BESTFIT TRUCK PARTS

    $64.25
    BESTfit Normally Closed Ac Trinary Switch Replaces OEM Numbers 71R-7650, RD5-4625-0 * High Quality AC Trinary Fan Overide/Pressure Switch* Normally Closed High * Open 325/Close 230 * Low - Open 22/ Close 40* Sold Individually* Warranty On AC Trinary Fan...
    $64.25
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    $64.25
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  • BESTfit AC Grilldenser For Peterbilt 359
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    BESTfit AC Grilldenser For Peterbilt 359

    BESTFIT TRUCK PARTS

    $807.99
    BESTfit AC Grilldenser Fits Peterbilt 359 1979-1986 * High Quality AC Condenser* Measurement - 26.00 Height - 36.750 Inch Width - 1.00 Inch Thick* Number 8 and Number 6 Fittings* Warranty On Condensers Against Defects In Workmanship & Material From...
    $807.99
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    $807.99
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  • BESTfit 4 X 33.5 Inch Heavy Duty Exhaust Gas Recirculation Cooler For ISX Cummins 2007-2011 BESTfit 4 X 33.5 Inch Heavy Duty Exhaust Gas Recirculation Cooler For ISX Cummins 2007-2011
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    BESTfit 4 X 33.5 Inch Heavy Duty Exhaust Gas Recirculation Cooler For ISX Cummins 2007-2011

    BESTFIT TRUCK PARTS

    $1,182.99
    BESTfit EGR Cooler For Cummins ISX Gen 2 Presenting our Exhaust Gas Recirculation Cooler, a reliable aftermarket replacement part designed for optimal performance. This cooler features a flanged design with an inlet inside diameter of 1.65 inches and an...
    $1,182.99
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    $1,182.99
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