All Products

Stainless Steel 3.5 Inch V-Band Clamp* High Quality V-Band Clamp* Stainless Steel* 3.50 Inch* Sold Individually* Warranty On V-Band Clamps Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...

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 A04-25922-018This high quality 4 X 16 inch DPF flex connector that fits Freightliner models includes: 1 flex connector with flanged ends, 2 V band clamps, 2 steel V band adapters, and 2 exhaust rings. The...

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 Flywheel With 10 Inch Center Opening & 8 Bolt Holes* High Quality Flywheel* For Caterpillar 3176, C10, C12 And C13 Engines* Flat Design* For 15 inch Clutch* Size SAE #1* 10 Inch Center Opening * 8 Bolt Holes For Mouning* 20 Inch O.D. * 113 Teeth...

BESTfit Flywheel Housing For Mack E7 & E-Tech Engines* High Quality Flywheel* Made Of Aluminum* For Mack E7 / E-Tech* 7/16 Inch Transmission Mounting Holes* 6 Bolt Side Pads* Sold Individually*** High Quality Aftermarket Replacement Part (Not OEM) *****...

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 DPF* High Quality Filter Clamp* Sold Individually* Warranty On Filter Clamps Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)***** Replaces OE Numbers 2871863,...

BESTfit 11.9L Oil Pan Fits Cummins ISXThis high quality 11.9L oil pan fits the Cummins ISX front and rear stump. The oil pan comes with a 1 year warranty.* High Quality 11.9L Oil Pan* Fits Cummins ISX 11.9L* Universal Fit For Both Front And Rear Sump...

BESTfit Front Sump Steel Oil Pan W/ 22 Bolt HolesThis Oil Pan with front sump is made of steel and has 22 bolt holes for mounting. It fits in your Cummins L10, M11, and ISM Diesel Engine Trucks.* High Quality Oil Pan* Front Sump* For Cummins L10, M11,...

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...

BESTfit DPF Gasket Replaces 2871453DPF Gasket Fits Cummins* High Quality Gasket* This Product Cannot Be Sold Or Shipped To California Currently* Sold Individually* Warranty On Gaskets Against Defects In Workmanship & Material From Date Of Purchase***...