Peterbilt 389 DPF & Mufflers
Limit the noise coming from your truck with Peterbilt 389 aftermarket noise reduction mufflers and more. We have different styles and sizes of custom, chrome, and aftermarket mufflers to ensure you find the perfect one for your big rig. Shop at 4 State Trucks for top-notch mufflers.
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BESTfit 10 X 30 Inch Performance Shorty Muffler
BESTFIT TRUCK PARTS
$169.29BESTfit 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 Response*...$169.29 -
BESTfit 4 Inch In/Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler
BESTFIT TRUCK PARTS
$159.99BESTfit 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* Used In...$159.99 -
BESTfit 5 X 51 Inch Aluminized Steel Exhaust Muffler
BESTFIT TRUCK PARTS
$148.99BESTfitHeavy 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 Body...$148.99 -
Galvanized Steel Exhaust Resonator 5 Inch Inlet With 9 Inch Body
AUTOMANN USA
$131.999 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...$131.99 -
Performance Muffler, 10 X 51.5 Inch With 6 Inch In/Out
PITTSBURGH POWER
$295.99High 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 *...$295.99 -
BESTfit 8 X 22 Inch Aluminized Muffler
BESTFIT TRUCK PARTS
$119.99BESTfit 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 Mufflers...$119.99 -
BESTfit 9 X 12 Inch Short Galvanized Exhaust Muffler
BESTFIT TRUCK PARTS
$84.99BESTfit 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 On Muffler...$84.99 -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965304NX, 2888247NX For Cummins ISX Engine
GLOBAL EMISSIONS
$2,141.991-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX Engine * High Quality Diesel Particulate Filter* Made Of 304 Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM Quality Clamps And Gaskets Included* Sold Individually...$2,141.99 -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 1827310PEX For Cummins ISX Engine
GLOBAL EMISSIONS
$2,021.991-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX 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 *...$2,021.99 -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 2871578 For Cummins ISX Engine
GLOBAL EMISSIONS
$2,029.991-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX 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 *...$2,029.99 -
Stainless Steel Diesel Particulate Filter Replaces 290-0045, 301-7856, 10R-6088 For Caterpillar C13, C15 Engines
GLOBAL EMISSIONS
$4,114.99Stainless Steel Diesel Particulate Filter Fits Caterpillar C13 & C15 Engines * High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold Individually * Warranty On Diesel Particulate Filter Against...$4,114.99 -
DPF Lowering Kit For OEM Box Cover For Peterbilt 388, 389
ROADWORKS
$455.99DPF Lowering Kit For OEM Box Cover Fits Peterbilt 388 & 389 * High Quality DPF Lowering Kit* Works With OEM Box Cover Or With Replacement Roadworks Cover Lowers * The DPF Cover To Accommodate 3 Inch Tall Cab Panels * Easy To Install- No Drill, No Cut, No...$455.99