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Peterbilt Exhaust Parts

Peterbilt Exhaust Parts

Upgrade your big rig with premium Peterbilt exhaust systems from 4 State Trucks. Our extensive collection of Peterbilt semi truck exhaust components delivers the perfect blend of performance and style. From chrome stacks to high-flow mufflers, we offer everything to enhance your Peterbilt exhaust setup. Improve fuel efficiency, reduce backpressure, and turn heads with our top-quality Peterbilt exhaust solutions. Whether you're after a subtle upgrade or a complete custom overhaul, 4 State Trucks has the Peterbilt exhaust options to make your truck rumble with power and pride on the open road.
  • Product
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  • Quantity
  • Price
  • Subtotal
  • Peterbilt 365, 387, 388 Exhaust Bellows Kit For Cummins ISX 15.0 Engine

    Peterbilt 365, 387, 388 Exhaust Bellows Kit For Cummins ISX 15.0 Engine

    AUTOMANN USA

    $444.99
    Exhaust Bellows Kit Peterbilt PremiumKeep your Peterbilt 365, 387, or 388 running smoothly with this high-quality Exhaust Bellows Kit designed specifically for Cummins ISX 15.0 engines. Engineered to absorb vibrations and thermal expansion, this kit...
    01-08040001
    SKU:
    01-08040001
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Material Options:
    Steel
    Style Options:
    Cummins
    Product Type:
    Exhaust
    $444.99
    Qty in Cart: 0
    Price:
    $444.99
    Subtotal:
  • Lincoln Chrome 4 Inch Marman Seal For Peterbilt 389 Exhaust With DPF System

    Lincoln Chrome 4 Inch Marman Seal For Peterbilt 389 Exhaust With DPF System

    LINCOLN CHROME

    $33.99
    Marman Seal For Exhaust With DPF SystemUpgrade your Peterbilt 389 exhaust system with the Lincoln Chrome 4 Inch Marman Seal, designed specifically for models equipped with DPF systems. This high-quality chrome seal ensures a tight, leak-proof connection...
    01-080400002
    SKU:
    01-080400002
    Truck Class:
    Heavy Duty
    Diameter Options:
    4 Inch
    Material Options:
    Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Location:
    Made In USA
    Product Type:
    Exhaust
    $33.99
    Qty in Cart: 0
    Price:
    $33.99
    Subtotal:
  • Lincoln Chrome 5 Inch Marman Seal For Peterbilt 389 Exhaust With DPF System

    Lincoln Chrome 5 Inch Marman Seal For Peterbilt 389 Exhaust With DPF System

    LINCOLN CHROME

    $31.31
    Marman Seal For Exhaust With DPF SystemThe Lincoln Chrome 5 Inch Marman Seal is engineered for Peterbilt 389 models with DPF exhaust systems, providing a reliable and tight seal to prevent exhaust leaks. Crafted from durable chrome materials, this seal...
    01-080400001
    SKU:
    01-080400001
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Location:
    Made In USA
    Product Type:
    Exhaust
    $31.31
    Qty in Cart: 0
    Price:
    $31.31
    Subtotal:
  • Peterbilt 337, 348, 365, 388 Exhaust Bellows Kit For W/ Cummins ISX 15.0 Engine

    Peterbilt 337, 348, 365, 388 Exhaust Bellows Kit For W/ Cummins ISX 15.0 Engine

    AUTOMANN USA

    $408.99
    Exhaust Bellows KitThis Exhaust Bellows Kit is designed for Peterbilt 337, 348, 365, and 388 trucks with Cummins ISX 15.0 engines, providing a reliable solution for flexible exhaust connections. Made to handle harsh operating conditions, the bellows...
    01-08040000
    SKU:
    01-08040000
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Style Options:
    Cummins
    Material Options:
    Steel
    Product Type:
    Exhaust
    $408.99
    Qty in Cart: 0
    Price:
    $408.99
    Subtotal:
  • Chrome 7 Inch Elbow Spool Combo Kit For Peterbilt

    Chrome 7 Inch Elbow Spool Combo Kit For Peterbilt

    LINCOLN CHROME

    $1,034.99
    Lincoln Chrome Elbow Spool Combo Kit Fits PeterbiltAdd serious shine and functionality to your Peterbilt with this Lincoln Chrome 7 Inch Elbow Spool Combo Kit. Designed for a clean fit and smooth airflow, this kit includes everything you need to complete...
    01-0803002
    SKU:
    01-0803002
    Diameter Options:
    7 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Style Options:
    Elbow
    Location:
    Made In USA
    Product Type:
    Exhaust
    $1,034.99
    Qty in Cart: 0
    Price:
    $1,034.99
    Subtotal:
  • BESTfit 11 Inch Diameter Muffler 5 ID / ID X 61.5 OAL For Peterbilt 387

    BESTfit 11 Inch Diameter Muffler 5 ID / ID X 61.5 OAL For Peterbilt 387

    BESTFIT TRUCK PARTS

    $364.99
    BESTfit Muffler 55 Inch X 11 InchThis high quality 55 X 11 inch muffler fits Peterbilt 387 and Kenworth T2000 models. The muffler has an overall 5 inch ID and comes with a 1 year warranty.* High Quality Muffler* 11 Inch x 55 Inch x 61.5 Inch* Overall 5...
    01-080202
    SKU:
    01-080202
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Length Options:
    61 1/2 Inch
    Product Type:
    Exhaust
    $364.99
    Qty in Cart: 0
    Price:
    $364.99
    Subtotal:
  • 9 Inch Diameter Muffler With Built In Y-Pipe For Peterbilt 378, 379

    9 Inch Diameter Muffler With Built In Y-Pipe For Peterbilt 378, 379

    BESTFIT TRUCK PARTS

    $2,434.99
    BESTfit Exhaust Y-Pipe With Muffler Fits PeterbiltOptimize your Peterbilt's exhaust system with the BESTfit Steel Exhaust Y-Pipe, complete with a 9-inch muffler. This premium exhaust component is made from high-quality steel, offering unmatched longevity...
    01-080200
    SKU:
    01-080200
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Peterbilt
    Length Options:
    5 Inch
    Product Type:
    Exhaust
    $2,434.99
    Qty in Cart: 0
    Price:
    $2,434.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    BESTfit 6 Inch Chrome Long Leg Elbow Reduces To 5 Inch OD W/ Tapered Top For Peterbilt 378, 379, 389 Glider

    BESTfit 6 Inch Chrome Long Leg Elbow Reduces To 5 Inch OD W/ Tapered Top For Peterbilt 378, 379, 389 Glider

    BESTFIT TRUCK PARTS

    Now: $552.99
    Was: $789.99
    BESTfit 6 Inch Chrome Long Leg Elbow Reduces To 5 Inch O.D. W/ Tapered Top Fits Peterbilt 378, 379 & 389 GliderTransform your exhaust with the BESTfit 6 Inch Chrome Long Leg Elbow, compatible with Peterbilt 378, 379, and 389 Glider models. This...
    01-080165004
    SKU:
    01-080165004
    Truck Class:
    Heavy Duty
    Diameter Options:
    6 Inch
    Style Options:
    Elbow
    Material Options:
    Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Availability:
    Ready To Ship
    Now: $552.99
    Was: $789.99
    Qty in Cart: 0
    Price:
    Now: $552.99
    Was: $789.99
    Subtotal:
  • BESTfit 5 Inch Turbo Pipe Extension Elbow Replaces 14-13409 For Peterbilt 357, 378, 379

    BESTfit 5 Inch Turbo Pipe Extension Elbow Replaces 14-13409 For Peterbilt 357, 378, 379

    BESTFIT TRUCK PARTS

    $63.33
    Turbo Extension Pipe Fits PeterbiltDesigned for trucks with the exhaust mounted above the frame, this turbo extension pipe is made of aluminized steel and has a single 20 degree bend. It has a 5 inch ID inlet and a 5 inch OD outlet. The pipe fits 1995...
    01-08013409
    SKU:
    01-08013409
    Truck Class:
    Heavy Duty
    Diameter Options:
    5 Inch
    Material Options:
    Aluminized Steel
    Degree Options:
    20
    Make:
    Peterbilt
    Product Type:
    Exhaust
    $63.33
    Qty in Cart: 0
    Price:
    $63.33
    Subtotal:
  • Limited Quantity Available
    American Eagle Pickett Elbow Reduces From 10 To 8 Inches For Peterbilt 379

    American Eagle Pickett Elbow Reduces From 10 To 8 Inches For Peterbilt 379

    AMERICAN EAGLE EXHAUST

    $969.99
    10-8 Inch Reducer Pickett ElbowThe American Eagle Pickett Elbow offers an exceptional upgrade for Peterbilt 379 owners, featuring a reduction from 10 inches to 8 inches. Made from stainless steel, this elbow combines durability with superior performance...
    01-0801108006
    SKU:
    01-0801108006
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Diameter Options:
    10 Inch
    Style Options:
    Elbow
    Product Type:
    Exhaust
    Availability:
    Ready To Ship
    $969.99
    Qty in Cart: 0
    Price:
    $969.99
    Subtotal:
  • BESTfit 5 OD X 18 Inch Intermediate Straight Pipe Replaces 14-13940-0460 For Peterbilt 357, 378, 379

    BESTfit 5 OD X 18 Inch Intermediate Straight Pipe Replaces 14-13940-0460 For Peterbilt 357, 378, 379

    BESTFIT TRUCK PARTS

    $170.99
    BESTfit Intermediate Pipe Plain Fits PeterbiltThis straight 5 OD x 18-inch chrome replacement pipe is designed for select Peterbilt 357, 378, and 379 trucks with dual exhaust systems above the frame. Crafted from premium materials, it promises durability...
    01-080104600
    SKU:
    01-080104600
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Peterbilt
    Length Options:
    18 Inch
    Product Type:
    Exhaust
    Availability:
    Ready To Ship
    $170.99
    Qty in Cart: 0
    Price:
    $170.99
    Subtotal:
  • Ss Exhaust Turbo Flange Adapter, 52 Degree Bend W/ Pyrometer Port For Peterbilt 378, 379

    Ss Exhaust Turbo Flange Adapter, 52 Degree Bend W/ Pyrometer Port For Peterbilt 378, 379

    BESTFIT TRUCK PARTS

    $469.99
    Peterbilt Stainless Steel Exhaust Turbo Flange AdapterUpgrade your Peterbilt 378 or 379 exhaust system with the Stainless Steel Exhaust Turbo Flange Adapter, featuring a 52-degree bend and a convenient pyrometer port. Constructed from high-quality...
    01-0801009
    SKU:
    01-0801009
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Style Options:
    Flanged
    Product Type:
    Exhaust
    $469.99
    Qty in Cart: 0
    Price:
    $469.99
    Subtotal:
  • 5 Inch OD Multi-Bend Turbo Exhaust Down Pipe - Short For Peterbilt 389, 388, 386 With Detroit / CAT Engine

    5 Inch OD Multi-Bend Turbo Exhaust Down Pipe - Short For Peterbilt 389, 388, 386 With Detroit / CAT Engine

    LINCOLN CHROME

    $234.99
    Turbo Multi-Bend Down PipeUpgrade your Peterbilt 389, 388, or 386 with the Turbo Down Pipe! Specifically designed for trucks with Detroit or CAT motors, this short down pipe is built for enhanced performance. Give your truck the boost!* High Quality...
    01-0801008
    SKU:
    01-0801008
    Truck Class:
    Heavy Duty
    Diameter Options:
    5 Inch
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Location:
    Made In USA
    Product Type:
    Exhaust
    $234.99
    Qty in Cart: 0
    Price:
    $234.99
    Subtotal:
  • Peterbilt 389, 388, 386 Turbo Down Pipe For Exhaust With Cat Motor

    Peterbilt 389, 388, 386 Turbo Down Pipe For Exhaust With Cat Motor

    LINCOLN CHROME

    $197.99
    Turbo Multi Bend Down Pipe Fits 3406E Caterpillar EngineThis turbo down pipe is a perfect fit for Peterbilt 389, 388, and 386 trucks with CAT or Detroit engines. It's designed to optimize exhaust flow, improving overall performance. A solid upgrade for...
    01-0801007
    SKU:
    01-0801007
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Style Options:
    Elbow
    Location:
    Made In USA
    Product Type:
    Exhaust
    Availability:
    Ready To Ship
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    Subtotal:
  • BESTfit 5 Inch Turbo Pipe Replaces 14-15329 For Peterbilt 377, 378 & 379

    BESTfit 5 Inch Turbo Pipe Replaces 14-15329 For Peterbilt 377, 378 & 379

    BESTFIT TRUCK PARTS

    $186.99
    BESTfit Turbo Pipe Fits PeterbiltEnhance your Peterbilt 377, 378, or 379 with the BESTfit 5 Inch Turbo Pipe, specifically engineered to replace OE number 14-15329 and Dynaflex number 09-8-101-220. Made of aluminized steel, this turbo pipe boasts a 5-inch...
    01-0801006
    SKU:
    01-0801006
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Peterbilt
    Product Type:
    Exhaust
    Availability:
    Ready To Ship
    $186.99
    Qty in Cart: 0
    Price:
    $186.99
    Subtotal:
  • Aluminized Steel Exhaust Down Pipe Replaces 14-14194 For Peterbilt 375, 377, 378, 379

    Aluminized Steel Exhaust Down Pipe Replaces 14-14194 For Peterbilt 375, 377, 378, 379

    AFTERMARKET

    $185.99
    Exhaust Down Pipe Below Turbo Pipe Fits PeterbiltRevitalize your Peterbilt's exhaust system with the Aluminized Steel Exhaust Down Pipe, designed to replace OE number 14-14194 and Dynaflex number 09-8-151-220. Crafted from aluminized steel, this down...
    01-0801003
    SKU:
    01-0801003
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Peterbilt
    Product Type:
    Exhaust
    $185.99
    Qty in Cart: 0
    Price:
    $185.99
    Subtotal:
  • BESTfit 6 Inch OD Chrome Exhaust Elbow Tapered To Inch OD, Passenger Side For Peterbilt 377 & 378

    BESTfit 6 Inch OD Chrome Exhaust Elbow Tapered To Inch OD, Passenger Side For Peterbilt 377 & 378

    BESTFIT TRUCK PARTS

    $494.99
    BESTfit Passenger Side Peterbilt 377 & 378 Chrome Exhaust Bend ElbowGet a dependable exhaust solution with this BESTfit 6 Inch OD Chrome Exhaust Elbow, tapered to 5 Inch OD for the passenger side of your Peterbilt 377 or 378. Made from tough...
    01-080100009
    SKU:
    01-080100009
    Diameter Options:
    6 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Style Options:
    Elbow
    Location:
    Made In USA
    Product Type:
    Exhaust
    $494.99
    Qty in Cart: 0
    Price:
    $494.99
    Subtotal:
  • BESTfit 6 Inch OD Chrome Exhaust Elbow Tapered To Inch OD, Driver Side For Peterbilt 377 & 378

    BESTfit 6 Inch OD Chrome Exhaust Elbow Tapered To Inch OD, Driver Side For Peterbilt 377 & 378

    BESTFIT TRUCK PARTS

    $494.99
    BESTfit Driver Side Peterbilt 377 & 378 Chrome Exhaust Bend ElbowOutfit your Peterbilt 377 or 378 with the BESTfit 6 Inch OD Chrome Exhaust Elbow, tapered down to 5 Inch OD for a streamlined connection and better exhaust flow. Built from long-lasting...
    01-080100008
    SKU:
    01-080100008
    Diameter Options:
    6 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Style Options:
    Elbow
    Location:
    Made In USA
    Product Type:
    Exhaust
    $494.99
    Qty in Cart: 0
    Price:
    $494.99
    Subtotal:
  • BESTfit Aluminized Turbo Down Pipe, 4 Inch OD, For Peterbilt 386

    BESTfit Aluminized Turbo Down Pipe, 4 Inch OD, For Peterbilt 386

    BESTFIT TRUCK PARTS

    $173.99
    BESTfit 23 Inch Long Turbo Down Pipe W/ 4 Inch OD & 3.85 Inch IDThe BESTfit Aluminized Turbo Down Pipe is a high-quality replacement designed for Peterbilt 386 trucks. Constructed from durable aluminized steel, this turbo down pipe features a 4-inch...
    01-080100007
    SKU:
    01-080100007
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Peterbilt
    Diameter Options:
    4 Inch
    Product Type:
    Exhaust
    $173.99
    Qty in Cart: 0
    Price:
    $173.99
    Subtotal:
  • BESTfit Aluminized Steel Exhaust Pipe Fits Peterbilt 387 Replaces PB-25029, 14-25029 For Peterbilt

    BESTfit Aluminized Steel Exhaust Pipe Fits Peterbilt 387 Replaces PB-25029, 14-25029 For Peterbilt

    BESTFIT TRUCK PARTS

    $199.99
    Replacement Aluminized Steel Single Exhaust Pipe Fits PeterbiltThe BESTfit Aluminized Steel Exhaust Pipe is a high-quality replacement designed specifically to fit Peterbilt 387 models. Made from durable aluminized steel, this exhaust pipe features a...
    01-080100006
    SKU:
    01-080100006
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Peterbilt
    Product Type:
    Exhaust
    $199.99
    Qty in Cart: 0
    Price:
    $199.99
    Subtotal:
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Peterbilt Exhaust Parts

If you drive a Peterbilt 379, 389, 378, or 359, your truck deserves more than just stock parts. Our aftermarket Peterbilt exhaust components are built to handle the demands of the open road—while giving your rig a clean, bold exterior look that commands attention.

Why Invest in Aftermarket Peterbilt Exhaust Parts?

- Boost Performance: Precision-engineered elbows, Y-pipes, and stack kits improve exhaust flow for better fuel efficiency and horsepower. - Customize Your Look: Choose from chrome or stainless steel stacks, tips, and brackets to match your rig’s personality. - Fight Corrosion: Durable, high-grade materials resist rust and road grime—keeping your setup sharp for the long haul. - Easy Upgrades: Bolt-on kits and replacement parts make installs fast, simple, and frustration-free. - Built for the Long Haul: Aftermarket parts often outlast stock components and are designed with real trucker feedback in mind.

Get a Full Exhaust System Upgrade

- Exhaust Stacks & Kits: Go with a straight cut, bull hauler, or turnout style for head-turning curb appeal. - Clamps, Brackets & Hangers: Heavy-duty fasteners that keep your system tight, quiet, and rattle-free. - Elbows & Y-Pipes: Optimize backpressure and performance where it matters most—under load. - Exhaust Tips & Accessories: Polish off your build with sleek chrome or stainless accents. - Complete Systems: All-in-one kits with everything you need for a full replacement or upgrade.

Shop for Replacement Exhaust Components Today

Expand your exhaust upgrades with related performance enhancements like new and improved Peterbilt charge air coolers or frame and chassis parts for more stable exhaust mounting. Whether you’re fixing a damaged pipe or customizing a show-ready big rig from the ground up, we’ve got the aftermarket Peterbilt exhaust parts to match your performance goals and style preferences.

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