Peterbilt 357/378 DPF & Mufflers

Peterbilt 357/378 DPF & Mufflers

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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  • BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet, 5 Inch Outlet
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    BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet, 5 Inch Outlet

    BESTFIT TRUCK PARTS

    $1,064.99
    BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet, 5 Inch OutletCrafted from durable Aluminized Steel, this aftermarket muffler is designed to elevate your vehicle's exhaust system. It comes complete with mounting hardware...
    $1,064.99
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