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.
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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 -
13.38 Inch Diameter Heavy Duty Diesel Oxidation Catalyst, Replaces 2888247NX For Cummins ISX 15.0L
DAYTON / DORMAN
$3,611.99Heavy Duty Diesel Oxidation Catalyst - Replaces 2888247NX, 4965304NX & A035W856 * High Quality Diesel Oxidation Catalyst* For Trucks Equipped With Cummins IS X 15.0 Liter * 13.38 Inch Diameter * Includes: - 1 Diesel Oxidation Filter - 2 Gaskets* Not For...$3,611.99 -
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 -
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 RoundWrap 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