Peterbilt 387 DPF & Mufflers
Find the best selection of top-notch aftermarket mufflers for your Peterbilt 387 at 4 State Trucks. Shop for custom, chrome, and aftermarket mufflers in a variety of styles and sizes. We carry everything you need to keep your exhaust system running in tip-top shape at 4 State Trucks.
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BESTfit 10 X 49.5 Inch Type 1 Muffler W/ Lifting Ring W/ 5 Inch Inlet/Outlet Replaces M66-6188, M101451 For PACCAR
BESTFIT TRUCK PARTS
$699.99BESTfit Aluminized Steel Type 1 Muffler Fits Keworth & PeterbiltEnhance your vehicle's performance with our Aluminized Steel Muffler, proudly made in the USA. Featuring a sturdy construction, it measures 10 inches in diameter and 49.5 inches in length,...$699.99 -
BESTfit 5 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler
BESTFIT TRUCK PARTS
$69.76BESTfit 5 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler * High Quality Internal Muffler* Aluminized Steel* 16 Gauge* Dimensions - 5 Inch Diameter - 18 Inch Length* Works Well With 36 Inch Stacks* Hardware Not Included* Sold Individually*...$69.76 -
BESTfit 4 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler
BESTFIT TRUCK PARTS
$64.66BESTfit 4 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler * High Quality Internal Muffler* Aluminized Steel * 16 Gauge* Dimensions - 4 Inch Diameter - 18 Inch Length* Works Well With 36 Inch Stacks* Hardware Not Included* Sold Individually*...$64.66 -
BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler
BESTFIT TRUCK PARTS
$131.99BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler * High Quality Muffler* Aluminized Steel* Dimensions - 4 Inch Inside Diameter - 5 Inch Inside Diameter - 8 Inch Body Diameter - 15 Inch Body Length - 21 Inch Over All...$131.99 -
BESTfit 8 X 30 Inch OAL Exhaust Muffler With 5 Inch I.D. Inlet & Outlet
BESTFIT TRUCK PARTS
$145.99BESTfit Muffler 8 Inch Diameter * High Quality Muffler* Aluminized* Dimensions - 8 Inch Diameter - 5 Inch I.D. Inlet/Outlet - 24 Inch Length Body - 30 Inch Length Overall* Sold Individually* Warranty On Mufflers Against Defects In Workmanship &...$145.99 -
BESTfit 55 X 11 Inch Muffler For Peterbilt 387
BESTFIT TRUCK PARTS
$291.99BESTfit Muffler 55 Inch X 11 Inch * High Quality Muffler* 11 Inch x 55 Inch x 61.5 Inch* Overall 5 Inch I.D. In And Out* Sold Individually* Warranty On Mufflers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...$291.99 -
BESTfit 10 X 51.5 Inch Performance Muffler
BESTFIT TRUCK PARTS
$179.99BESTfit 51.5 Inch Performance Sport Muffler * High Quality Muffler* 51.5 Inch Wide Muffler Is 1 Inch Wider Than The Standard Performance Sport * Uses Acoustic Louver Sound Dampening* Up To 50 Additional Horsepower And Improved Response* Lower Exhaust Gas...$179.99