Peterbilt 567/579 DPF & Mufflers
Keep the noise down with a new aftermarket muffler for your Peterbilt 579. At 4 State Trucks, we carry the mufflers and muffler inserts you're looking for. Check out our selection of slick aftermarket, chrome, and custom parts, too. We've got everything to keep you on the road.
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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 -
BESTfit 7 Inch OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$625.99BESTfit 7 Inch OD X 45 Inch VK Internal Muffler PipeElevate your vehicle's performance with our top-of-the-line Muffler, designed to deliver unparalleled sound control and airflow optimization. Featuring a generous 7-inch diameter and a 45-inch length,...$625.99 -
On Sale
BESTfit 6 Inch OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
Now: $345.50Was: $690.99BESTfit 6 Inch OD X 45 Inch VK Internal Muffler PipeExperience unparalleled performance with our premium Muffler, meticulously crafted for exceptional sound control and optimized airflow. Boasting a 6-inch diameter and a 45-inch length, this aftermarket...Now: $345.50Was: $690.99 -
BESTfit 5 Inch OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$724.99BESTfit 5 Inch OD X 45 Inch VK Internal Muffler PipeEnhance your vehicle's performance with our top-of-the-line Muffler, designed for superior sound reduction and optimal airflow. This aftermarket replacement part features a 5-inch diameter and a length...$724.99 -
BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet, 5 Inch Outlet
BESTFIT TRUCK PARTS
$1,064.99BESTfit 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 -
BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet/Outlet
BESTFIT TRUCK PARTS
$622.99BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet/OutletConstructed from robust Aluminized Steel, this aftermarket muffler ensures durability and longevity for your vehicle's exhaust system. It comes with mounting hardware...$622.99 -
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 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