Peterbilt Exhaust
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.
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Peterbilt 379 & 378 6 To 5 Inch OD Chrome 58 Degree Exhaust Elbow by BESTfit
BESTFIT TRUCK PARTS
$269.99BESTfit Exhaust Elbow 6-5 Inch Fits Peterbilt 379 & 378Revamp your Peterbilt 378 or 379's exhaust system with the BESTfit Chrome 58 Degree Exhaust Elbow, tailored for trucks with OE elbow number 14-13056Cp. Crafted from durable chrome-plated steel, this...01-081653056- SKU:
- 01-081653056
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Degree Options:
- 58
- Make:
- Peterbilt
- Finish Options:
- Chrome-Plated
- Diameter Options:
- 6 Inch
- Style Options:
- Elbow
- Product Type:
- Exhaust
$269.99Qty in Cart: 0Price:$269.99Subtotal: -
Peterbilt 357, 378, 379 5 Inch ID / OD Multi-Bend Exhaust Elbow - Driver Side Replaces 14-15501
AUTOMANN USA
$1,048.99Driver Side Multi-Bend Exhaust Elbow Fits Peterbilt 378/357This 5-inch Multibend Plain Peterbilt Exhaust Elbow replaces the OE number 14-15501 and the Dynaflex number 09-8-164-223. It's designed to replace the old exhaust elbow on the driver's side with...01-08155010- SKU:
- 01-08155010
- Truck Class:
- Heavy Duty
- Diameter Options:
- 5 Inch
- Location:
- Made In USA
- Style Options:
- Elbow Multi-Bend
- Material Options:
- Aluminized Steel
- Make:
- Peterbilt
- Product Type:
- Exhaust
$1,048.99Qty in Cart: 0Price:$1,048.99Subtotal: -
5 Inch Plain Economy Exhaust Y-Pipe Combo For Peterbilt 357, 378 Passenger Side W/ Hi Mount Exhaust
AUTOMANN USA
$594.995 Inch Exhaust Y-Pipe Combo Fits Peterbilt 357 & 378 Passenger Side* Economy Exhaust Elbow* Y Pipe* 5 Inch OD* Thickness 0.062 Inch* Sold Individually* Warranty On Exhaust Elbow Against Defects In Workmanship & Material From Date Of Purchase*** High...01-08155001- SKU:
- 01-08155001
- Truck Class:
- Heavy Duty
- Diameter Options:
- 5 Inch
- Make:
- Peterbilt
- Material Options:
- Steel
- Style Options:
- Y-Pipe
- Product Type:
- Exhaust
$594.99Qty in Cart: 0Price:$594.99Subtotal: -
Peterbilt 357, 378, 379 5 Inch OD/OD/ID Y Pipe Elbow Combo - Passenger Side By BESTfit Replaces 14-13965
BESTFIT TRUCK PARTS
$1,364.99BESTfit Aluminized Steel Hi Mount Y 5 Bend Pipe ComboThe 5" 5-bend Y-pipe made of aluminized material and featuring an outer diameter/outer diameter/inner diameter design is specifically designed for Peterbilt 357, 378, and 379 models manufactured...01-08155000- SKU:
- 01-08155000
- Truck Class:
- Heavy Duty
- Diameter Options:
- 5 Inch
- Location:
- Made In USA
- Material Options:
- Aluminized Steel
- Make:
- Peterbilt
- Style Options:
- Y-Pipe
- Product Type:
- Exhaust
$1,364.99Qty in Cart: 0Price:$1,364.99Subtotal: -
FREE SHIPPING OVER $219
5 Inch 90 Degree Exhaust Elbow BOM Replaces 14-25079 For Peterbilt 387 With Dual Exhaust 2002-2007
AUTOMANN USA
$89.245 Inch 90 Degree Exhaust Elbow BOM Fits Peterbilt 387* High Quality Exhaust Elbow* 90 Degree, 5 Inch OD/OD* Fits Peterbilt 387 With Dual Exhaust Behind the Sleeper* Sold Individually* Warranty on Exhaust Elbow Against Defects In Workmanship & Material...01-08150790- SKU:
- 01-08150790
- Truck Class:
- Heavy Duty
- Diameter Options:
- 5 Inch
- Style Options:
- Elbow
- Material Options:
- Aluminized Steel
- Degree Options:
- 90
- Make:
- Peterbilt
- Product Type:
- Exhaust
$89.24Qty in Cart: 0Price:$89.24Subtotal: -
Peterbilt 357, 377, 378, 379 5 Inch Multi-Bend Down Pipe, Replaces 14-15073 by BESTfit
BESTFIT TRUCK PARTS
$249.99BESTfit Aluminized Steel 90 Degree Exhaust Down PipeThe 5 Inch Multi-Bend Down Pipe is the go-to replacement for OE numbers 14-15073 & EP50-EL90124A, and it fits Peterbilt 357, 377, 378, and 379 models. Constructed from high-quality aluminized steel,...01-08150730- SKU:
- 01-08150730
- Truck Class:
- Heavy Duty
- Diameter Options:
- 5 Inch
- Location:
- Made In USA
- Style Options:
- Elbow Multi-Bend
- Material Options:
- Steel
- Make:
- Peterbilt
- Product Type:
- Exhaust
$249.99Qty in Cart: 0Price:$249.99Subtotal: -
5 Inch 90 Degree BOM Multi-Bend Aluminized Exhaust Elbow For Peterbilt
AUTOMANN USA
$247.99Multi-Bend Aluminized Exhaust Elbow Fits Single Exhaust Peterbilt 1999-2006* High Quality Down Pipe* Made Of Aluminized Steel* 5 Inch Diameter * OD/OD Pipe* 90 Degree Bends S Pipe* Sold Individually* Made In USA* Warranty On Down Pipes Against Defects In...01-08150290- SKU:
- 01-08150290
- Truck Class:
- Heavy Duty
- Diameter Options:
- 5 Inch
- Location:
- Made In USA
- Style Options:
- Elbow Multi-Bend
- Material Options:
- Aluminized Steel
- Degree Options:
- 90
- Make:
- Peterbilt
- Product Type:
- Exhaust
$247.99Qty in Cart: 0Price:$247.99Subtotal: -
Peterbilt 68 Degree Turbo Pipe Replaces 14-14256
AUTOMANN USA
$76.99Peterbilt Turbo Connection PipeUpgrade your Peterbilt with our premium 68 Degree Turbo Pipe, designed to seamlessly replace OE number 14-14256 and Dynaflex number 09-8-107-220. This high-quality turbo connection pipe is made from durable aluminized...01-08142560- SKU:
- 01-08142560
- Truck Class:
- Heavy Duty
- Make:
- Peterbilt
- Diameter Options:
- 6 Inch
- Style Options:
- Elbow
- Material Options:
- Aluminized Steel
- Degree Options:
- 68
- Product Type:
- Exhaust
$76.99Qty in Cart: 0Price:$76.99Subtotal: -
BESTfit 5 Inch Multi-Bend Elbow Replaces 14-13845RC For Peterbilt 378, 379 Passenger Side
BESTFIT TRUCK PARTS
$305.90BESTfit Exhaust Elbow Fits Peterbilt 378 & 379Introducing the BESTfit Exhaust Elbow for the passenger side of Peterbilt 378 and 379 models, and a replacement for OE number 14-13845RC. This exhaust elbow, made from chrome-plated steel, not only adds a...01-08138451- SKU:
- 01-08138451
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Make:
- Peterbilt
- Finish Options:
- Chrome-Plated
- Style Options:
- Elbow Multi-Bend
- Diameter Options:
- 8 Inch
- Product Type:
- Exhaust
$305.90Qty in Cart: 0Price:$305.90Subtotal: -
BESTfit 5 Inch Multi-Bend Exhaust Elbow Replaces 14-13845LC For Peterbilt 378, 379 Driver Side
BESTFIT TRUCK PARTS
$296.99BESTfit Exhaust Elbow Fits Peterbilt 378 & 379 Driver SideFor Peterbilt 378 and 379 owners, the BESTfit Exhaust Elbow presents a superior solution for enhancing your truck's exhaust on the driver side. Constructed from durable chrome-plated steel, this...01-08138450- SKU:
- 01-08138450
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Make:
- Peterbilt
- Finish Options:
- Chrome-Plated
- Length Options:
- 22 Inch
- Style Options:
- Elbow Multi-Bend
- Diameter Options:
- 8 Inch
- Product Type:
- Exhaust
$296.99Qty in Cart: 0Price:$296.99Subtotal: -
5 Inch Multi-Bend Turbo Pipe Replaces 14-13825 For Peterbilt 379, 378 & 357
AUTOMANN USA
$264.99Multi-Bend Turbo Pipe For PeterbiltRevitalize your Peterbilt's exhaust system with the innovative 5 Inch Multi-Bend Turbo Pipe from 4 State Trucks. Constructed from high-grade aluminum for maximum durability, this turbo pipe features a 5-inch flanged...01-08138250- SKU:
- 01-08138250
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Material Options:
- Aluminized Steel
- Make:
- Peterbilt
- Product Type:
- Exhaust
$264.99Qty in Cart: 0Price:$264.99Subtotal: -
BESTfit 5 Inch ID/OD 90 Degree Elbow Pipe Replaces 14-13433 For Peterbilt 379
BESTFIT TRUCK PARTS
$80.37BESTfit Lower Elbow Below Turbo Frame PipeFor Peterbilt 379 owners, the BESTfit 5 Inch ID/O.D. 90 Degree Elbow Pipe offers a replacement for OE number 14-13433. Sold individually, this elbow pipe is made from high-quality galvanized steel, offering...01-08134330- SKU:
- 01-08134330
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Style Options:
- Elbow
- Material Options:
- Steel
- Degree Options:
- 90
- Make:
- Peterbilt
- Length Options:
- 12 Inch
- Finish Options:
- Galvanized
- Product Type:
- Exhaust
$80.37Qty in Cart: 0Price:$80.37Subtotal: -
Peterbilt 377, 378, 379 5 Inch OD 58 Degree Turbo Elbow, Replaces 14-13430 by BESTfit
BESTFIT TRUCK PARTS
$130.99BESTfit Aluminized Steel 58-Degree Turbo Exhaust Pipe ReplacementThe BESTfit 5 Inch OD 58 Degree Turbo Elbow is designed to provide Peterbilt 377, 378, and 379 models with an exhaust upgrade. This high-quality replacement pipe, made in the USA, is a...01-08134300- SKU:
- 01-08134300
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Steel
- Degree Options:
- 58
- Make:
- Peterbilt
- Finish Options:
- Chrome-Plated
- Product Type:
- Exhaust
$130.99Qty in Cart: 0Price:$130.99Subtotal: -
Peterbilt 357, 378 5 Inch Plain Economy Exhaust Elbow BOM For Passenger Side W/ Hi Mount Exhaust
AUTOMANN USA
$339.995 Inch Exhaust Elbow Bottom Of Muffler Fits Peterbilt 357 & 378 Passenger SideRevitalize your Peterbilt's exhaust with the 5 Inch Plain Economy Exhaust Elbow BOM, designed for an optimal fit on the passenger side of 357, 378, and 379 models with...01-08134121- SKU:
- 01-08134121
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Style Options:
- Elbow
- Make:
- Peterbilt
- Material Options:
- Steel
- Product Type:
- Exhaust
$339.99Qty in Cart: 0Price:$339.99Subtotal: -
BESTfit 5 Inch Plain Exhaust Elbow Replaces 14-15503 For Peterbilt 357 & 378 Passenger Side
BESTFIT TRUCK PARTS
$701.99BESTfit Exhaust Elbow Below Muffler Fits PeterbiltThis high quality 5 inch plain exhaust elbow fits Peterbilt passenger side. The elbow comes with a 1 year warranty.* High Quality Exhaust Elbow* 5 Inch Plain* Passenger Side* Sold Individually* Warranty...01-08134120- SKU:
- 01-08134120
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Style Options:
- Elbow Multi-Bend
- Material Options:
- Steel
- Make:
- Peterbilt
- Product Type:
- Exhaust
$701.99Qty in Cart: 0Price:$701.99Subtotal: -
BESTfit 5 Inch 75 Degree Aluminized Exhaust Elbow Below Turbo Pipe For Peterbilt 379 Replaces 14-13395
BESTFIT TRUCK PARTS
$246.99Aluminized Steel 75 Degree Exhaust Elbow W/ 5 Inch I.D. Inlet & 5 Inch O.D. OutletBoost your Peterbilt 377, 378, or 379's exhaust with the BESTfit 5 Inch 75 Degree Aluminized Exhaust Elbow from 4 State Trucks. Made of aluminized steel, this exhaust elbow...01-08133950- SKU:
- 01-08133950
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Style Options:
- Elbow
- Material Options:
- Aluminized Steel
- Make:
- Peterbilt
- Degree Options:
- 75
- Product Type:
- Exhaust
$246.99Qty in Cart: 0Price:$246.99Subtotal: -
Peterbilt 377, 378, 379 5 Inch ID / OD 90 Degree Chrome Exhaust Elbow Pipe - 14-13394 by BESTfit
BESTFIT TRUCK PARTS
$189.99BESTfit Aluminized Steel 90 Degree Exhaust Elbow PipeThe BESTfit 5 Inch I.D./O.D. 90 Degree Exhaust Elbow Pipe provides a perfect fit for Peterbilt 377, 378, and 379 models, directly replacing OE number 14-13394-202. Made in the USA from high-quality...01-08133940- SKU:
- 01-08133940
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Style Options:
- Elbow
- Material Options:
- Steel
- Degree Options:
- 90
- Make:
- Peterbilt
- Finish Options:
- Galvanized
- Product Type:
- Exhaust
$189.99Qty in Cart: 0Price:$189.99Subtotal: -
Peterbilt 379 5 Inch OD OD 58 Degree Economy Chrome Exhaust Elbow by BESTfit Replaces 14-13056C
BESTFIT TRUCK PARTS
$90.99BESTfit Exhaust Elbow Chrome Bottom Of Muffler Fits Peterbilt 379Ensure a precision fit for your Peterbilt 379 with the BESTfit Chrome 5 Inch 58 Degree Economy Exhaust Elbow. This premium exhaust component is made of chrome-plated steel for exceptional...01-08130561- SKU:
- 01-08130561
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Degree Options:
- 58
- Make:
- Peterbilt
- Finish Options:
- Chrome-Plated
- Length Options:
- 15 Inch
- Style Options:
- Elbow
- Product Type:
- Exhaust
$90.99Qty in Cart: 0Price:$90.99Subtotal: -
Peterbilt 378, 379 Chrome 5 Inch OD 56 Degree Exhaust Elbow by BESTfit Replaces 14-13056CP
BESTFIT TRUCK PARTS
$154.99Peterbilt Chrome 58 Degree Angled Exhaust Elbow - 5 OD To 5 OD InchThis is a durable, high-quality chrome steel exhaust connector with a stunning triple chrome-plated finish for a long-lasting shine. It's designed to connect two exhaust pipes, each with...01-0813056- SKU:
- 01-0813056
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Style Options:
- Elbow
- Material Options:
- Steel
- Degree Options:
- 56
- Make:
- Peterbilt
- Finish Options:
- Chrome-Plated
- Length Options:
- 15 Inch
- Product Type:
- Exhaust
$154.99Qty in Cart: 0Price:$154.99Subtotal: -
Peterbilt 357, 377, 378, 379 85 Degree Turbo Pipe Replaces 14-13002 by BESTfit
BESTFIT TRUCK PARTS
$58.66BESTfit Aluminized Steel 85 Degree Turbo Pipe With 5 Inch ODUpgrade your exhaust system with this BESTfit 85-Degree Turbo Pipe, designed to fit Peterbilt 357, 377, 378, and 379 models, replacing OE part number 14-13002. This aluminized steel pipe, with a...01-08130020- SKU:
- 01-08130020
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Steel
- Degree Options:
- 85
- Make:
- Peterbilt
- Finish Options:
- Chrome-Plated
- Product Type:
- Exhaust
$58.66Qty in Cart: 0Price:$58.66Subtotal:
