Exhaust

BESTfit 4 X 60 Inch Aluminized Steel TubeAre you looking to customize your exhaust for the best performance and sound possible? 4 State Trucks offers this high quality straight cut exhaust stack that is made to perform. It is constructed with strong and...

BESTfit DPF Flexible Exhaust Connector, Replaces A04-25922-018Maintain reliable exhaust flexibility on your Freightliner truck with the BESTfit 4 x 15.5 Inch DPF Flex Connector. This high-quality connector includes 1 flex connector, 2 V-band clamps, 2...

BESTfit Chrome Flat Top Style Top Exhaust Stack 6-5 X 68 Inch* High Quality Exhaust Top Stack* Top Cut Style - Flat Top* Made Of Chrome-Plated Steel * 6 Inch OD Stack With Reduced 5 Inch OD Extra Long Inlet* Long Reduced 5 Inch End Measures 7 Inches...

BESTfit Stainless Steel 14.5 Inch Long DPF Flex Connector PipeRevitalize your truck's exhaust system with the BESTfit 5 Inch X 14.5 Inch Bead Flex Connector, specifically designed to replace OE numbers M66-6542-0335 and M66-6132-0320. This...

BESTfit Filter Clamp For DPFThe BESTfit DPF Filter Clamp delivers a reliable solution for keeping your DPF filter securely in place. Replacing part numbers 2871863 and 21445455, this high-quality clamp ensures leak-free operation and proper exhaust...

BESTfit DPF Exhaust Flex Connector PipeBESTfit's 4 X 11.375 Inch Flex Connector is the top choice for replacing OE numbers M66-6541-0320 and M66-7091-0320, fitting a wide range of Kenworth and Peterbilt trucks. This 4-inch flange flex connector is...

Cummins DPF Gasket By BESTfitPrevent exhaust leaks and maintain proper DPF operation with this BESTfit DPF Gasket for Cummins engines. Built to replace OEM part 2871453, it delivers precise fit and dependable performance. Sold individually, it's the...

Muffler Replaces OE Numbers 1518317C1 And 1518317C2Introducing the durable and high-quality Galvanized 10 Inch Muffler, designed as a replacement for OE numbers 1518317C1 and 1518317C2. This high-quality muffler is crafted from galvanized steel to offer...

1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISC Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM Quality Clamps And Gaskets Included* Sold Individually *...

BESTfit 10 Inch Diameter Muffler With 5 Inch Inlet & OutletOptimize your exhaust system with the BESTfit 10 Inch Diameter Muffler, featuring a 5-inch inlet and outlet for maximum efficiency. With a body diameter of 10 inches and an overall length of 51...

BESTfit Stainless Steel Exhaust Flexible Connector W/ V Band Clamps, Replaces A04-258522-018Ensure optimal DPF performance on your Freightliner or Western Star truck with the BESTfit 5 x 15.5 Inch Flex Connector Pipe. With flanged inlet and outlet 5...

BESTfit V Band Clamp Replaces 01-14596-000Secure your turbo setup with the Turbo Housing V Band Clamp, designed to fit select Freightliner, Peterbilt, and Volvo models. This USA-made clamp is engineered for precision and durability, offering a perfect...