ENGINE PARTS & COOLING

Antifreeze Fleet Charge Radiator Coolant Regulate the temperature in heavy duty diesel, gasoline, and natural gas engines with this high quality Fleet Coolant/Antifreeze. It is the original fully formulated supplemental Coolant additive (SCA) Pre-charge...

Air Dog Champ II Air Fuel Separator Fits CAT EnginesGet your AirDog Champ II spin-on high-pressure fuel air separator at 4 State Trucks! It is designed specifically for CAT engines with secondary filters. This system effectively removes entrained air and...

Air Conditioner Orifice Tube for Automotive ReplacementOur BESTfit valves provide the same high-quality, reliable, and durable performance as factory parts. They effectively restore A/C performance by addressing restrictions or failures in components. *...

Clutch Install Kit * High Quality Clutch Install Kit* For Fuller RT Series Transmissions* Includes All The Wear Items And Gaskets * Kit Includes: - S-1659 Input Shaft - 2 Inch - 14750 Retaining Ring - Inner - 16980 Retaining...

Engine Cooling 32 Inch Fan Blade With 2.56 Inch Pilot Hole This Engine Fan Blade with 11 blades is a reliable choice for your engine cooling needs and replaces the factory part. It measures 32 inches in diameter and has a 2.56 inch Pilot hole. It...

Clutch Brake   * High Quality Clutch Brake* Sold Individually* Warranty On Clutch Brake Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)*** This Original Parts Program item...

Block Heater With Plug Fits 3406 Cat Detroit Diesel Series   * High Quality Block Heater* For Use With CAT / Detroit Diesel Engine * 1500 Watt* 120 Volt* 1 Inch NPT* Sold Individually* Warranty On Block Heaters Against Defects In Workmanship &...

Block Heater * High Quality Block Heater* 1500 Watt With Plug* Plate Mount* 120 Volt* Fits Cummins Signature 600 ISX QSX * Gasket Not Included* Reuse Old Gasket* Sold Individually* Warranty On Block Heater Against Defects In Workmanship & Material From...

Cover Kit for Eaton-Fuller RTLO Transmissions * High Quality Cover Kit* With Screws* Replaces OEM # K2402* Sold Individually* Warranty On Cover Kit Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement...

Seal for Eaton Fuller RTLO and FRO Transmissions * High Quality Seal* With Bearing Retainer-Electric* Replaces OEM # K2918* Sold Individually* Warranty On Seal Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...

Nut Output Shaft * High Quality Nut Output Shaft* Output Shaft For Eaton-Fuller RTLO And From Transmissions* Replaces OEM # K4122* Sold Individually* Warranty On Nut Output Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High...

Yoke Transmission Output   * High Quality Yoke Transmission Output* 1810 1/2 Round* Replaces OEM # 6.5-4-4631-1* Sold Individually* Warranty On Yoke Transmission Output Against Defects In Workmanship & Material From Date Of Purchase*** High...