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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
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 -
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 -
Galvanized Type 1 Resonator Muffler W/ 4 Inch ID Inlet & Outlet
BESTFIT TRUCK PARTS
$102.9916.5 Inch Galvanized Resonator Muffler, 9 Inch Body Diameter * High Quality Resonator Muffler * Galvanized* 10 Inch Body Length * 16.5 Inch Overall Length * 9 Inch Body Diameter * 4 Inch ID Inlet * 4 Inch ID Outlet* Sold Individually* Warranty On...$102.99 -
Galvanized 10 Inch Muffler, 4 Inch Inlet, 5 Inch Outlet
BESTFIT TRUCK PARTS
$221.99Muffler Replaces OE Numbers 1518317C1 And 1518317C2 * High Quality Muffler* Galvanized * Dimensions:- 10 Inch Diameter - 44 1/2 Inch Length - 51 Inch Overall Length- 4 Inch ID Inlet- 5 Inch ID Outlet* Sold Individually * Warranty On Mufflers Against...$221.99 -
10 X 51.5 Inch Performance Sport Muffler
PITTSBURGH POWER
$264.99Pittsburgh Power Performance Sport MufflerThis high quality 10 X 51.5 inch heavy duty performance sport muffler can give up to an additional 50 horsepower and an improved response. The muffler uses acoustic louver sound dampening, can lower exhaust gas...$264.99 -
Galvanized 27 Inch Exhaust Muffler With 5 Inch ID Inlet & Outlet
AUTOMANN USA
$159.995 X 27 Inch Galvanized Steel Exhaust Muffler With Interior Baffles And No Divider, Straight Through Design.Check out this high-quality galvanized steel exhaust muffler! The interior baffles provide superior sound reduction. Upgrade your ride with this...$159.99