ENGINE PARTS & COOLING

BESTfit Heavy Duty Constant Tension Clamp Do you need a clamp for your radiator hose? 4 State Trucks offers constant tension coolant clamps made of stainless steel and have a 2.50 - 2.75 inch range. These clamps provide constant torque for coolant hoses...

BESTfit 2.00 Inch ID Heavy Duty Silicone Coolant HoseUpgrade your coolant system with our Silicone Coolant Hose! This quality hose boasts a 2.00-inch inner diameter (51mm) and a 2.32-inch outer diameter (59mm), reinforced with three plies of polyester...

BESTfit Red Silicone Hose For Charge Air CoolerUpgrade your charge air cooler connections with our Hump Hose! Crafted from durable silicone, this hose features a 4.000-inch inner diameter and a 7.000-inch length, with a 4.230-inch outer diameter. It...

BESTfit Poly Radiator Mount With W/ Aluminum Spacer * High Quality Poly Radiator Mount* Includes Aluminum Spacer* Factory Style Replacement Radiator Mount assembly* Direct Replacement for a Proper Fit Every Time* Sold Individually* Warranty On Radiator...

BESTfit Radiator Core Gasket   * High Quality Gaskets* Sold Individually* Warranty On Gasket For Radiator Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)***

BESTfit Radiator Core, 40 X 28.5 Inch   * High Quality Radiator Core* 4 Row Core* Dimensions-Inches - 40.000 Height - 28.500 Width - 2.250 Thickness* Header Plate Dimensions-Inches - 32.125 Length - 7.375 Width* Sold Individually* Warranty On...

BESTfit Peterbilt Gasket For Radiator Core Are you working on a radiator project? 4 State Trucks offers this aftermarket replacement gasket for a radiator core which is available with a one year warranty from the date of purchase. * High Quality...

BESTfit Poly Radiator Mount Bushing Kit Are you in the market for radiator mount bushings? 4 State Trucks offers this polyurethane radiator mount bushing set with 2 bushing halves and 1 sleeve. It services one position; two sets are needed per a truck...

BESTfit Radiator CapUpgrade your vehicle's cooling system with our Large Style Radiator Cap! This aftermarket replacement part is designed to withstand pressure up to 7 pounds, ensuring optimal performance. Sold individually, it provides quality and...

BESTfit AC Compressor With 2 Groove Clutch Assembly for Peterbilt And Kenworth * High Quality Compressor* With Clutch* Sold Individually* Warranty On AC Compressors Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...

BESTfit Heavy Duty T-Bolt Clamp With SpringDo you have a charge air cooler project you are working on? 4 State Trucks carries the necessary parts for these projects including 4 inch heavy duty T-bolt clamps which replaces OEM part number TBSL-400. These...

BESTfit Replacement Cat DamperEnhance your CAT engine's performance with our aftermarket CAT damper. Specifically designed to fit CAT 3406, 3408, and C15 models, this damper is sold individually for your convenience. It's crafted to meet or exceed OEM...