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
Nitrogen Oxide Sensor, Replaces BA037339A For Mercedes-Benz, Detroit Diesel
INQBRANDS
Now: $77.47Was: $249.8912V Mercedes NOX Sensor With 28.74 Inch Lead * High Quality Nitrogen Oxide Sensor* With 28.74 Inch Lead* 12 Volt* Sold Individually* Warranty On Nitrogen Oxide Sensors Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...Now: $77.47Was: $249.89 -
On Sale
Nitrogen Oxide Sensor, Replaces BA037341A For Mercedes-Benz, Detroit Diesel
INQBRANDS
Now: $78.40Was: $252.8912V Mercedes NOX Sensor With 17.5 Inch Lead * High Quality Nitrogen Oxide Sensor* With 17 1/2 Inch Lead* 12 Volt* Sold Individually* Warranty On Nitrogen Oxide Sensors Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...Now: $78.40Was: $252.89 -
On Sale
Nitrogen Oxide Sensor, Replaces A0101538128 For Mercedes-Benz, Detroit Diesel
INQBRANDS
Now: $79.02Was: $254.8912V Mercedes NOX Sensor With 17.5 Inch Lead * High Quality Nitrogen Oxide Sensor* With 17 1/2 Inch Lead* 12 Volt* Sold Individually* Warranty On Nitrogen Oxide Sensors Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...Now: $79.02Was: $254.89 -
On Sale
Nitrogen Oxide Sensor, Replaces 22303390 For Mack, Volvo
INQBRANDS
Now: $175.62Was: $250.8912V Mack/Volvo NOX Sensor With 23.228 Inch Lead * High Quality Nitrogen Oxide Sensor* With 23 Inch Lead* 12 Volt* Sold Individually* Warranty On Nitrogen Oxide Sensors Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...Now: $175.62Was: $250.89 -
Oil Cooler, Replaces 2237962 For Caterpillar C15
AKMI
$841.99Cat C15 Oil Cooler * High Quality Oil Cooler* Shell And Tube Style * Oil To Water Cooler* Avoids The Risk Of Overheated Oil* Sold Individually* Warranty On Oil Coolers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...$841.99 -
High Mount Exhaust Manifold For Caterpillar C15
AKMI
$546.99Caterpillar C15 Exhaust Manifold W/ High Mount * High Quality Exhaust Manifold* Includes: - Center Section - End Section * High Mount* Mounting Kit Not Included* For Diesel Engine Trucks * Sold Individually* Warranty On Exhaust Manifolds Against...$546.99 -
Low Mount Exhaust Manifold For Caterpillar C15
AKMI
$546.99Caterpillar C15 Exhaust Manifold W/ Low MountThis is an aftermarket Caterpillar C15 Low Mount Exhaust Manifold. Mounting hardware is not included. * High Quality Exhaust Manifold* Includes - Center Section - End Section * Low Mount* Mounting Kit Not...$546.99 -
Exhaust Manifold Replaces 20738332 For Volvo D13 & Mack MP8 EGR
AKMI
$468.99Volvo & Mack Exhaust ManifoldThis Exhaust Manifold fits in your Aftermarket Volvo D13 and Mack MP8 EGR Diesel Engine Trucks. Find high quality replacement parts at 4 State Trucks! * High Quality Exhaust Manifold* Includes - Center Section - End...$468.99 -
Gasket For Power Steering Reservoir- NMCQ79699, Q79699, FGQ79699
AUTOMANN USA
$3.36Replacement Cover Gasket for Power Steering ReservoirLooking for a gasket for your power steering reservoir? Our reliable gasket ensures a perfect seal, preventing leaks and keeping your power steering system in top shape! * High Quality Gasket Power...$3.36 -
Multi V Ribbed Serpentine Belt 34.5 Inch - 4050345
AUTOMANN USA
$30.595 Rib, 34.5 Inch Multi V-Belt Replaces 4050345This quality after-market serpentine belt features a straight ribbed construction that matches the OE Style Belt for improved durability and a longer-lasting, quieter ride. With a 34.50-inch effective length...$30.59 -
Multi V Ribbed Serpentine Belt 35 Inch - 4050350
AUTOMANN USA
$19.565 Rib, 35 Inch Multi V-Belt Replaces 4050350This quality after market serpentine belt has a straight ribbed construction to match OE Style Belt. New construction and compounding improves durability for a longer lasting, quieter ride. * High Quality...$19.56 -
Multi V Ribbed Serpentine Belt 36 Inch - 4050360
AUTOMANN USA
$25.495 Rib, 36 Inch Multi V-Belt Replaces 4050360This high-quality aftermarket serpentine belt closely matches the original factory installed belt with its straight ribbed construction. Its new construction and compounding enhance durability, resulting in a...$25.49