Peterbilt 357/378 DPF & Mufflers
Time to replace or upgrade your muffler? Shop 4 State Trucks' collection of Peterbilt 378 aftermarket mufflers. We have custom, chrome, and aftermarket mufflers. Find the perfect muffler that fits your style and budget at 4 State Trucks.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
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 -
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...$221.99 -
10 X 51.5 Inch Performance Sport Muffler
PITTSBURGH POWER
$264.99Pittsburgh Power Performance Sport Muffler This 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 -
10.125 X 48 Inch 270 Degree Round Hole Heat Shield
AUTOMANN USA
$307.99Stainless Steel Exhaust Heat ShieldWrap This High Quality Heat Shield Around Your Exhaust To Prevent The Heat From The Manifold From Causing Damage To Any Components Under The Hood. It Fits A 10 1/8 Inch Muffler And Is Made Of High Polished Stainless...$307.99 -
Stainless Steel Smooth Heat Shield For 10 Inch Mufflers
AUTOMANN USA
$268.99No Hole Smooth Exhaust Shield 1/2 Round With Mounting ClampsThis high quality exhaust heat shield is made of polished stainless steel and is 48 inches long. It is designed to reduce heat radiated from tailpipes that are routed close to gas tanks and...$268.99 -
Stainless Steel Exhaust Shield With Vertical Slot Cutouts For 10 Inch Dia. Mufflers
AUTOMANN USA
$307.99Exhaust Shield With Vertical Slots Half Round Wrap this high quality 48 inch long heat shield around your exhaust to prevent the heat from the manifold from causing damage to any components under the hood. It fits around a 10 ? inch muffler or stacks to...$307.99 -
Stainless Steel Exhaust Shield Filler Trim For Peterbilt 378, 379, 388, 389, 389 Glider
ROADWORKS
$134.99Stainless Steel Filler Trim For Exhaust Shields Fills Gap Between Back End Exhaust Shield & Front Edge Of Sleeper Give your truck a finishing touch with these stack guard filer trims. This trim fills the gap between the back end of the exhaust shield and...$134.99 -
BESTfit 8 Inch OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$687.99BESTfit 8 Inch OD X 45 Inch VK Internal Muffler PipeEnhance your vehicle's exhaust system with our premium Muffler, meticulously crafted to deliver superior performance and sound control. Featuring substantial dimensions of 8 inches in diameter and 45...$687.99