Peterbilt 389 DPF & Mufflers
Limit the noise coming from your truck with Peterbilt 389 aftermarket noise reduction mufflers and more. We have different styles and sizes of custom, chrome, and aftermarket mufflers to ensure you find the perfect one for your big rig. Shop at 4 State Trucks for top-notch mufflers.
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FREE SHIPPING OVER $249
9 Inch Diameter Short Galvanized Exhaust Muffler 5 ID / 5 ID X 12 Inch Body Length by BESTfit
BESTFIT TRUCK PARTS
$94.99BESTfit 9 x 12 Inch Muffler W/ 5 Inch ID Inlet & OutletTransform your truck's exhaust system with the BESTfit 9 X 12 Inch Short Galvanized Exhaust Muffler, featuring a 5 Inch ID inlet and outlet for...09-080201- SKU:
- 09-080201
- Truck Class:
- Universal
- Material Options:
- Steel
- Make:
- Universal Items
- Finish Options:
- Galvanized
- Diameter Options:
- 9 Inch
- Length Options:
- 12 Inch
- Product Type:
- Exhaust
- Ready To Ship:
- Yes
$94.99Qty in Cart: 0Price:$94.99Subtotal: -
BESTfit 6 Inch Diameter Quiet Performance Muffler 4 ID / 5 ID X 29 Inch OAL
BESTFIT TRUCK PARTS
$1,064.99BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet, 5 Inch OutletElevate your driving experience with the BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler...09-080200013- SKU:
- 09-080200013
- Truck Class:
- Universal
- Diameter Options:
- 5 Inch
- Length Options:
- 29 Inch
- Material Options:
- Aluminized Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$1,064.99Qty in Cart: 0Price:$1,064.99Subtotal: -
BESTfit 6 Inch Diameter Quiet Performance Muffler 4 ID / ID X 29 Inch OAL
BESTFIT TRUCK PARTS
$622.99BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet/OutletDiscover the ultimate solution for a quieter ride with the BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance...09-080200012- SKU:
- 09-080200012
- Diameter Options:
- 4 Inch
- Truck Class:
- Universal
- Length Options:
- 29 Inch
- Material Options:
- Aluminized Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$622.99Qty in Cart: 0Price:$622.99Subtotal: -
BESTfit 8 OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$696.99BESTfit 8 Inch OD X 45 Inch VK Internal Muffler PipeTransform your vehicle's exhaust system with the BESTfit 8 Inch OD X 45 Inch VK Internal Muffler Pipe, the ultimate solution for drivers seeking...09-080200011- SKU:
- 09-080200011
- Truck Class:
- Universal
- Material Options:
- Steel
- Make:
- Universal Items
- Finish Options:
- Chrome-Plated
- Length Options:
- 45 Inch
- Diameter Options:
- 8 Inch
- Product Type:
- Exhaust
$696.99Qty in Cart: 0Price:$696.99Subtotal: -
BESTfit 7 OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$867.99BESTfit 7 Inch OD X 45 Inch VK Internal Muffler PipeEnhance your truck's exhaust system with the BESTfit 7 Inch OD X 45 Inch VK Internal Muffler Pipe, a solution designed for superior performance...09-080200010- SKU:
- 09-080200010
- Truck Class:
- Universal
- Material Options:
- Steel
- Make:
- Universal Items
- Finish Options:
- Chrome-Plated
- Diameter Options:
- 7 Inch
- Length Options:
- 45 Inch
- Product Type:
- Exhaust
$867.99Qty in Cart: 0Price:$867.99Subtotal: -
BESTfit 6 OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$928.99BESTfit 6 Inch OD X 45 Inch VK Internal Muffler PipeIntroducing the BESTfit 6 Inch OD X 45 Inch VK Internal Muffler Pipe, the ultimate upgrade for your truck's exhaust system. Constructed from...09-080200009- SKU:
- 09-080200009
- Truck Class:
- Universal
- Material Options:
- Steel
- Make:
- Universal Items
- Finish Options:
- Chrome-Plated
- Length Options:
- 45 Inch
- Diameter Options:
- 6 Inch
- Product Type:
- Exhaust
$928.99Qty in Cart: 0Price:$928.99Subtotal: -
BESTfit 5 OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$775.99BESTfit 5 Inch OD X 45 Inch VK Internal Muffler PipeElevate your truck's exhaust system with the BESTfit 5 Inch OD X 45 Inch VK Internal Muffler Pipe, an upgrade designed for superior performance and...09-080200008- SKU:
- 09-080200008
- Truck Class:
- Universal
- Material Options:
- Steel
- Make:
- Universal Items
- Finish Options:
- Chrome-Plated
- Diameter Options:
- 5 Inch
- Length Options:
- 45 Inch
- Product Type:
- Exhaust
$775.99Qty in Cart: 0Price:$775.99Subtotal: -
BESTfit 5 OD X 18 Inch Aluminized Internal Muffler / Baffle -16 Gauge
BESTFIT TRUCK PARTS
$79.99BESTfit Type 1 A 16 Gauge Aluminized Steel Internal MufflerThis high-performance internal muffler is designed for 36-inch straight stacks, fitting into the bottom for efficient operation on older...09-080200006- SKU:
- 09-080200006
- Diameter Options:
- 5 Inch
- Truck Class:
- Universal
- Length Options:
- 18 Inch
- Material Options:
- Aluminized Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
- Ready To Ship:
- Yes
$79.99Qty in Cart: 0Price:$79.99Subtotal: -
BESTfit 4 X 18 Inch Aluminized Steel Internal Muffler 16 Gauge
BESTFIT TRUCK PARTS
$66.99BESTfit Internal Exhaust Baffle TubeExperience the superior quality of the BESTfit 4 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler from 4 State Trucks. This premium internal muffler, made from...09-080200005- SKU:
- 09-080200005
- Truck Class:
- Universal
- Diameter Options:
- 4 Inch
- Length Options:
- 18 Inch
- Material Options:
- Aluminized Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
- Ready To Ship:
- Yes
$66.99Qty in Cart: 0Price:$66.99Subtotal: -
BESTfit 8 Inch Diameter Powerflow Muffler Type 1 4 ID / ID X 21 Inch OAL
BESTFIT TRUCK PARTS
$181.99BESTfit 4 Inch In/Out X 8 X 21 Inch Aluminized Steel Type 1 MufflerDiscover the superior performance of the BESTfit 4 Inch In/Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler, designed for those who...09-080200004- SKU:
- 09-080200004
- Truck Class:
- Universal
- Diameter Options:
- 4 Inch
- Length Options:
- 21 1/2 Inch
- Material Options:
- Aluminized Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$181.99Qty in Cart: 0Price:$181.99Subtotal: -
BESTfit 8 Inch Diameter Muffler Type 1 4 ID / 5 ID X 21 Inch OAL
BESTFIT TRUCK PARTS
$145.99BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1 MufflerBoost your truck's exhaust performance with the BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1...09-080200003- SKU:
- 09-080200003
- Diameter Options:
- 5 Inch
- Truck Class:
- Universal
- Length Options:
- 21 Inch
- Material Options:
- Aluminized Steel
- Make:
- Universal Items
- Style Options:
- Angled
- Product Type:
- Exhaust
$145.99Qty in Cart: 0Price:$145.99Subtotal: -
10 Inch Diameter Performance Muffler 6 ID / 6 ID X 51.5 Inch OAL
PITTSBURGH POWER
$305.99High Performance Muffler Increases Horsepower, Mileage & Reduces Back PressureThe Performance Muffler, measuring 10 inches by 51.5 inches and featuring a 6-inch inlet and outlet, is designed to...09-080200001- SKU:
- 09-080200001
- Diameter Options:
- 6 Inch
- Truck Class:
- Universal
- Location:
- Made In USA
- Material Options:
- Steel
- Make:
- Universal Items
- Length Options:
- 51 1/2 Inch
- Product Type:
- Exhaust
- Ready To Ship:
- Yes
$305.99Qty in Cart: 0Price:$305.99Subtotal:
