All Products

BESTfit 3 Row Radiator With FrameDesigned specifically for Peterbilt 377, 378, and 379 trucks, the BESTfit 3 Row Copper Brass Radiator with Frame delivers reliable cooling without a surge tank. Crafted from high-quality copper brass, this radiator...

Replacement SS 2.5 X 3 Inch Lower Coolant TubeKeep your Peterbilt 357, 377, 378, and 379 running cool with this BESTfit 2.5 to 3 inch stainless steel lower coolant tube. Crafted from premium 304 stainless steel, it ensures long-lasting resistance to rust...

BESTfit Radiator Fits Peterbilt 387Keep your Peterbilt 387 running cool with the BESTfit Copper Brass 3 Row Radiator. Built with a high-quality copper and brass construction, this radiator features a 3-row core mounted in a sturdy frame. Designed for...

BESTfit 4 Row Radiator Kit W/ Surge Tank & Frame WorkIs your truck overheating? Look no further, 4 State Trucks has a great radiator for you. With this affordable option, you will get a premium performance while still being a dependable choice. Get the...

Replacement Coolant Tube Fits Peterbilt 357, 377, 378 & 379The BESTfit Stainless Steel 90 Degree Lower Coolant Tube 07-06462 is engineered for Peterbilt trucks equipped with Caterpillar 3406E or C15 engines. Crafted from high-quality stainless steel,...

BESTfit Peterbilt Removable Replacement Radiator Surge TankMaintain optimal engine cooling with the BESTfit Removable Replacement Radiator Surge Tank, built for Peterbilt trucks 357, 375, 377, 378, 379, and 385. This surge tank ensures effective coolant...

BESTfit Metal Radiator With 4 Row Core Fits Peterbilt 1994-2004The BESTfit Copper Brass 4 Row Radiator comes with a Surge Tank and frame work that can be easily fitted to select Peterbilt models. The tanks are bolted on for a secure installation.* High...

High Performance 5 Row Radiator Kit W/ Hoses, Clamps & BushingsIs your truck overheating? Look no further, 4 State Trucks has a great radiator for you. With this affordable option, you will get premium performance while still saving money. Get the most...

BESTfit 37.5 X 38.75 Inch 4 Row Radiator W/ Bolt On Tanks Modified For Charge Air ApplicationThe BESTfit 4 Row Radiator with Frame is a perfect replacement for OE 07-04449A011 and 07-04449A022. It fits Peterbilt 359 vehicles from 1980-1987 and has...

BESTfit Peterbilt 3 Row Radiator Core W/ GasketsThe BESTfit High Performance 3-Row Radiator Core offers a durable and efficient solution for heavy-duty trucks. With dimensions of 41.5 by 34.5 inches, this radiator core's three-row design enhances heat...

SS Upper Coolant Tube Replaces OE # 07-07013Keep your engine running cool with this high-quality stainless steel upper coolant tube from BESTfit, built for Peterbilt 330 and 379 applications. With dual 2 x 2.5-inch diameters and a direct-fit design that...

BESTfit Radiator Kit Fits PeterbiltThis Copper Brass 3 Row Radiator Kit with Frame from BESTfit is a dependable cooling solution for your Peterbilt 387. The radiator features a 32.375" H x 22.625" W x 2.25" thick core and includes a 2.5" upper left inlet...