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 Muffler Insert For 6 Inch Stacks
BESTfit TRUCK PARTS
$165.99BESTfit 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...$165.99 -
BESTfit Muffler Insert For 5 Inch Stacks
BESTfit TRUCK PARTS
$159.99BESTfit 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...$159.99 -
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...$169.29 -
BESTfit Muffler Insert For 7 Inch Stacks
BESTfit TRUCK PARTS
$162.99BESTfit 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...$162.99 -
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*...$159.99 -
BESTfit Muffler Insert For 8 Inch Stacks
BESTfit TRUCK PARTS
$182.99BESTfit 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...$182.99 -
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...$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...$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...$84.99 -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 5579356, 5295605 For Cummins ISX Engine
Global Emissions
$1,895.991-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...$1,895.99