Peterbilt 330/335/337 DPF & Mufflers

BESTfit 6 Inch Stack Muffler InsertLet Elite Truck Accessorieshelp you reduce the high pitch, harsh tones that can be found in a diesel exhaust with this quality Exhaust Muffler Insert. Fit snugly into the base of a 6 inch O.D. stack, it can reduce...

BESTfit 5 Inch Stack Muffler InsertLet Elite Truck Accessorieshelp you reduce the high pitch, harsh tones that can be found in a diesel exhaust with this quality Exhaust Muffler Insert. Fit snugly into the base of a 5 inch O.D. stack, it can reduce...

BESTfit 30 Inch Performance Shorty Muffler * High Quality Muffler* Dimensions - 30 Inch Length - 10 Inch Width - 5 Inch I.D.* Designed For Tight Spaces* Muffler Uses Acoustic Louver Sound Dampening* Up To 50 Additional Horsepower And Improved...

BESTfit 7 Inch Stack Muffler Insert Let Elite Truck Accessorieshelp you reduce the high pitch, harsh tones that can be found in a diesel exhaust with this quality Exhaust Muffler Insert. Fit snugly into the base of a 7 inch O.D. stack, it can reduce...

BESTfit 4 Inch In/Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler * High Quality Muffler* Aluminized Steel* Dimensions - 4 Inch Inside Diameter - 4 Inch Inside Diameter - 11 Inch Body Diameter - 15 Inch Body Length - 21.5 Inch Over All Length*...

BESTfit 8 Inch Stack Muffler InsertLet Elite Truck Accessorieshelp you reduce the high pitch, harsh tones that can be found in a diesel exhaust with this quality Exhaust Muffler Insert. Fit snugly into the base of an 8 inch O.D. stack, it can reduce...

BESTfitHeavy Gauge Steel W/ Aluminized Plating OE Style Exhaust Muffler   * High Quality Exhaust Muffler* Made Of Steel With Aluminized Plating* Dimensions - Inner Diameter: 5 Inch - Outlet Diameter: 5 Inch - Muffler Body Diameter: 10 Inch - Muffler...

9 Inch Diameter Exhaust Resonator With 5 Inch ID Inlet and OutletInstall the resonator to the exhaust system of your truck before the muffler to help reduce the noise of the engine. * High Quality Exhaust Resonator* Made Of Galvanized Steel* 5 Inch ID...

High Performance Muffler Increases Horsepower, Mileage & Reduces Back Pressure * High Quality Performance Muffler * 6 Inch In * 6 Inch Out* Dimension:10 Inch X 51.5 Inch * Reduces Exhaust Back Pressure* 50 HP Increase * 1/4 Mile Per Gallon Improvement *...

BESTfit Aluminized Muffler 8 Inch Diameter With 5 Inch I.D. Inlet & Outlet * High Quality Muffler* Aluminized* Dimensions - 8 Inch Diameter - 5 Inch I.D. Inlet/Outlet - 14 Inch Length Body - 22 Inch Length Overall* Sold Individually* Warranty On...

BESTfit Short Galvanized Muffler W/ 5 Inch ID Inlet & Outlet   * High Quality Muffler* Made Of Galvanized Steel* 9 Inch Diameter Body* 12 Inch Body Length* Inlet 5 Inch Inside Diameter* Outlet 5 Inch Inside Diameter* Sold Individually* Warranty...

1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX Engine * High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold Individually * Warranty On Diesel Particulate Filter Against...