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Peterbilt 386 Elbows, Piping & Comp.

Shop for replacement Peterbilt 386 exhaust elbows, pipes, and related hardware components. We stock a large selection of aftermarket parts to help upgrade your exhaust system.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • FREE SHIPPING OVER $249
    5 OD X 15 Inch 90 Degree Chrome Steel Exhaust Elbow by BESTfit

    5 OD X 15 Inch 90 Degree Chrome Steel Exhaust Elbow by BESTfit

    BESTFIT TRUCK PARTS

    $217.99
    BESTfit Chrome Steel 90 Degree Exhaust Elbow W/ Plain EndsThis BESTfit 90 degrees exhaust elbow is plain on both ends with an outside diameter measuring 5 inches. Each side extends a length of 15...
    09-0801508
    SKU:
    09-0801508
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Length Options:
    15 Inch
    Style Options:
    Elbow
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $217.99
    Qty in Cart: 0
    Price:
    $217.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 5 Inch OD / OD 90 Degree Steel Exhaust Elbow 15 Inch

    TPHD 5 Inch OD / OD 90 Degree Steel Exhaust Elbow 15 Inch

    TPHD

    $115.99
    Aluminized Steel 90 Degree Exhaust Elbow W/ Plain Ends* High Quality Exhaust Elbow* Made Of Aluminized Steel* 90 Degree* 15 Inch Length X 5 Inch R* 5 Inch O.D. X 5 Inch O.D.* Sold Individually*...
    09-0801507
    SKU:
    09-0801507
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Length Options:
    15 Inch
    Style Options:
    Elbow
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $115.99
    Qty in Cart: 0
    Price:
    $115.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 5 Inch OD / OD Chrome 90 Degree Exhaust Elbow 5 X 9 Inch

    BESTfit 5 Inch OD / OD Chrome 90 Degree Exhaust Elbow 5 X 9 Inch

    BESTFIT TRUCK PARTS

    $124.99
    BESTfit Chrome Steel 90 Degree Exhaust Elbow W/ Plain Ends* High Quality Exhaust Elbow* Made Of Chrome-Plated Steel* 90 Degree* 9 Inch Length X 5 Inch R* 5 Inch O.D. X 5 Inch O.D.* Sold Individually*...
    09-0801506
    SKU:
    09-0801506
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Length Options:
    9 Inch
    Style Options:
    Elbow
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $124.99
    Qty in Cart: 0
    Price:
    $124.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 5 ID / OD Inch 90 Degree Steel Exhaust Elbow 8 X 8 Inch

    TPHD 5 ID / OD Inch 90 Degree Steel Exhaust Elbow 8 X 8 Inch

    TPHD

    $80.99
    Aluminized Steel 90 Degree Exhaust Elbow W/ Plain Ends* High Quality Exhaust Elbow* Made Of Aluminized Steel* 90 Degree* 9 Inch Length X 5 Inch R* 5 Inch O.D. X 5 Inch O.D.* Sold Individually*...
    09-0801505
    SKU:
    09-0801505
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Length Options:
    9 Inch
    Style Options:
    Elbow
    Product Type:
    Exhaust
    $80.99
    Qty in Cart: 0
    Price:
    $80.99
    Subtotal:
  • FREE SHIPPING OVER $249
    5 ID /OD 90 Degree Chrome Exhaust Elbow 15 Inch by BESTfit

    5 ID /OD 90 Degree Chrome Exhaust Elbow 15 Inch by BESTfit

    BESTFIT TRUCK PARTS

    $171.99
    BESTfit Chrome Steel 90 Degree Exhaust Elbow W/ One Belled EndThis BESTfit Chrome 90 Degree Exhaust Elbow has a 5 Inch ID and a 5 Inch OD, with one end belled. It is made of chrome plated steel and...
    09-0801504
    SKU:
    09-0801504
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Length Options:
    15 Inch
    Style Options:
    Elbow
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $171.99
    Qty in Cart: 0
    Price:
    $171.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 5 ID / OD Inch 90 Degree Steel Exhaust Elbow, Belled On One End 15 X 5 Inch

    BESTfit 5 ID / OD Inch 90 Degree Steel Exhaust Elbow, Belled On One End 15 X 5 Inch

    BESTFIT TRUCK PARTS

    $77.99
    BESTfit Aluminized Steel 90 Degree Exhaust Elbow W/ One Belled End* High Quality Exhaust Elbow* Made Of Aluminized Steel* 90 Degree* Belled On One End* 30 Inch Overall Length (15x15)* 5 Inch Radius*...
    09-0801503
    SKU:
    09-0801503
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Length Options:
    15 Inch
    Style Options:
    Elbow
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $77.99
    Qty in Cart: 0
    Price:
    $77.99
    Subtotal:
  • FREE SHIPPING OVER $249
    5 ID / OD Inch 90 Degree Chrome Exhaust Elbow by BESTfit

    5 ID / OD Inch 90 Degree Chrome Exhaust Elbow by BESTfit

    BESTFIT TRUCK PARTS

    $133.99
    BESTfit Chrome Steel 90 Degree Exhaust Elbow, 5 Inch ID To 5 Inch ODThis BESTfit 90 degree exhaust elbow with one belled end is made of chrome plated steel. It is 9 inch L x 5 inch R with a 5 inch ID...
    09-0801502
    SKU:
    09-0801502
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Style Options:
    Elbow
    Length Options:
    9 Inch
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $133.99
    Qty in Cart: 0
    Price:
    $133.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 5 Inch ID / OD 90 Degree Exhaust Elbow W/ Expansion 8 X 8 Inch

    TPHD 5 Inch ID / OD 90 Degree Exhaust Elbow W/ Expansion 8 X 8 Inch

    TPHD

    $58.99
    5 Inch Steel Exhaust Elbow - 90 Degree* High Quality Exhaust Elbow* Made Of Aluminized Steel* 90 Degree Elbow* 8nch Length X 5 Inch R * 5 Inch I.D. X 5 Inch O.D.* Belled On One End* Sold...
    09-0801501
    SKU:
    09-0801501
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Length Options:
    9 Inch
    Style Options:
    Elbow
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $58.99
    Qty in Cart: 0
    Price:
    $58.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Aluminized Steel Exhaust Pipe Reducer 4 ID X 3 ID X 8 Inch

    BESTfit Aluminized Steel Exhaust Pipe Reducer 4 ID X 3 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $28.99
    BESTfit 8 Inch Aluminized Exhaust Pipe ReducerStreamline your exhaust system with the aluminized reducer, from 4 inches inner diameter to 3 inches inner diameter. Designed for universal applications,...
    09-0801430
    SKU:
    09-0801430
    Diameter Options:
    4 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    8 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $28.99
    Qty in Cart: 0
    Price:
    $28.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 4 OD 45 Degree 9 X 9 Inch Exhaust Elbow

    TPHD 4 OD 45 Degree 9 X 9 Inch Exhaust Elbow

    TPHD

    $30.89
    Exhaust ElbowIntroducing the TPHD 4 Inch OD 45 Degree 9 X 9 Inch Exhaust Elbow, designed to provide your vehicle with improved exhaust flow. This high-quality exhaust elbow is engineered for superior...
    09-0801409
    SKU:
    09-0801409
    Diameter Options:
    4 Inch
    Material Options:
    Aluminized Steel
    Degree Options:
    45
    Make:
    Universal Items
    Style Options:
    Elbow
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $30.89
    Qty in Cart: 0
    Price:
    $30.89
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 4 OD 90 Degree 12 X 12 Inch Chrome Exhaust Elbow, Plain On Both Ends

    BESTfit 4 OD 90 Degree 12 X 12 Inch Chrome Exhaust Elbow, Plain On Both Ends

    BESTFIT TRUCK PARTS

    $174.99
    BESTfit Exhaust ElbowThe BESTfit 4 Inch O.D. 90 Degree 12 X 12 Inch Chrome Exhaust Elbow is the ultimate upgrade for your exhaust, featuring chrome for durability and style. Crafted from top-tier...
    09-0801408
    SKU:
    09-0801408
    Diameter Options:
    4 Inch
    Style Options:
    Elbow
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $174.99
    Qty in Cart: 0
    Price:
    $174.99
    Subtotal:
  • BESTfit 4 OD 90 Degree 12 X 12 Inch Aluminized Exhaust Elbow, Plain On Both Ends

    BESTfit 4 OD 90 Degree 12 X 12 Inch Aluminized Exhaust Elbow, Plain On Both Ends

    BESTFIT TRUCK PARTS

    $64.99
    BESTfit Exhaust ElbowMaximize your exhaust system with the BESTfit Exhaust Elbow. Featuring a durable design with a 90-degree angle and a 4-inch diameter, it ensures an optimal exhaust flow. The 12 x...
    09-0801407
    SKU:
    09-0801407
    Diameter Options:
    4 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $64.99
    Qty in Cart: 0
    Price:
    $64.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 4 OD X 8 X 8 Inch 90 Degree Exhaust Elbow

    BESTfit 4 OD X 8 X 8 Inch 90 Degree Exhaust Elbow

    BESTFIT TRUCK PARTS

    $53.99
    BESTfit Plain Exhaust ElbowThis 4-inch outside diameter 90-degree exhaust elbow is made from aluminized steel for durability. Both ends of the elbow are plain, with each leg measuring 8 inches long...
    09-0801405
    SKU:
    09-0801405
    Diameter Options:
    4 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $53.99
    Qty in Cart: 0
    Price:
    $53.99
    Subtotal:
  • BESTfit 4 Inch ID/OD 90 Degree 8 X 8 Inch Chrome Elbow

    BESTfit 4 Inch ID/OD 90 Degree 8 X 8 Inch Chrome Elbow

    BESTFIT TRUCK PARTS

    $207.99
    BESTfit 90 Degree Exhaust Elbow W/ One Bell EndElevate your exhaust with the BESTfit 4 Inch ID/OD 90 Degree 8 X 8 Inch Chrome Elbow from 4 State Trucks. Crafted with precision, this high-quality...
    09-0801404
    SKU:
    09-0801404
    Diameter Options:
    4 Inch
    Style Options:
    Elbow
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $207.99
    Qty in Cart: 0
    Price:
    $207.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 4 ID / OD Inch 90 Degree Steel Exhaust Elbow

    TPHD 4 ID / OD Inch 90 Degree Steel Exhaust Elbow

    TURNPIKE TRUCK TRIM

    $50.99
    Steel 4 X 12 Inch Exhaust 90 Degree Elbow By TPHDRevitalize your exhaust system with the TPHD 4 Inch Steel Exhaust Elbow, offering a 90-degree angle for enhanced performance. With dimensions of 12...
    09-0801401
    SKU:
    09-0801401
    Diameter Options:
    4 Inch
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Length Options:
    12 Inch
    Style Options:
    Elbow
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 4 ID / OD Inch 90 Degree Steel Exhaust Elbow 8 X 8 Inch

    TPHD 4 ID / OD Inch 90 Degree Steel Exhaust Elbow 8 X 8 Inch

    TURNPIKE TRUCK TRIM

    $51.99
    Aluminized Steel Short Radius Exhaust Elbow W/ Belled End By TPHDKeep your truck's exhaust system operating efficiently with the TPHD 4 ID/OD Inch 90 Degree Steel Exhaust Elbow. Built from durable...
    09-0801400
    SKU:
    09-0801400
    Diameter Options:
    4 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • 5 Inch OD Chrome Elbow 90 Degree W/ 12 Inch Top Leg & 14 Inch Lower Leg

    5 Inch OD Chrome Elbow 90 Degree W/ 12 Inch Top Leg & 14 Inch Lower Leg

    LINCOLN CHROME

    $247.99
    Chrome Steel Exhaust Elbow W 12 Inch Top & 12 Inch Lower LegIntroducing the ultimate solution for enhancing your exhaust system - a 5 Inch OD Chrome Elbow with a precise 90-degree angle, designed for...
    09-0801010
    SKU:
    09-0801010
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Diameter Options:
    5 Inch
    Style Options:
    Elbow
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $247.99
    Qty in Cart: 0
    Price:
    $247.99
    Subtotal:
  • BESTfit 2.5 OD X 3 Inch Stainless Steel Marmon Flange W/ Half Flare

    BESTfit 2.5 OD X 3 Inch Stainless Steel Marmon Flange W/ Half Flare

    BESTFIT TRUCK PARTS

    $72.99
    BESTfit Half-Flare 2.5 Inch Diameter 3 Inches Long Marmon Flange* High Quality Marmon Flange* Made Of 304 Stainless Steel* 2.5 O.D. Wide* 3 Inches Long* 2.98 Inch Flare* Sold Individually* Warranty...
    09-0801008
    SKU:
    09-0801008
    Truck Class:
    Universal
    Length Options:
    4 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $72.99
    Qty in Cart: 0
    Price:
    $72.99
    Subtotal:
  • BESTfit 5 Inch Long-Style Marmon Flare

    BESTfit 5 Inch Long-Style Marmon Flare

    BESTFIT TRUCK PARTS

    $50.99
    BESTfit 5 Inch Long-Style Marmon Flare* High Quality Marmon Flare* 5 Inch * Used To Join Parts Together For Leakproof And Serviceable Connections * Made In USA* Sold Individually ** Warranty On...
    09-080100308
    SKU:
    09-080100308
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • BESTfit 3.5 Inch Diameter X 10.5 X 16 Inch Aluminized Steel Type B Y-Pipe

    BESTfit 3.5 Inch Diameter X 10.5 X 16 Inch Aluminized Steel Type B Y-Pipe

    BESTFIT TRUCK PARTS

    $282.99
    BESTfit 3.5 Inch Diameter X 10.5 X 16 Inch Aluminized Steel Type B Y-PipeRevamp your exhaust system with the BESTfit 3.5 Inch Diameter X 10.5 X 16 Inch Aluminized Steel Type B Y-Pipe from 4 State...
    09-080100300
    SKU:
    09-080100300
    Diameter Options:
    3 1/2 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $282.99
    Qty in Cart: 0
    Price:
    $282.99
    Subtotal:
  • Total: items /

Adding your products to cart

Peterbilt 386 High-Flow Exhaust Plumbing & Replacement Piping

Find the right heavy-duty flex connectors, exhaust adapters, and universal Y-pipes to keep backpressure in check and your diesel engine breathing. We stock everything required to map out a reliable Class 8 exhaust system from the turbocharger housing to the vertical stack tips. Swap out cracked factory Paccar bellows with our premium aftermarket replacement kits to absorb harsh engine vibrations and frame twist. Route your exhaust cleanly using our exact-fit aluminized steel down pipes, stainless flex connectors, and precision Y-pipes. Splicing out a rusted section to pass a DOT inspection? Grab our 16-gauge straight exhaust tubes, V-band clamps, and slip-fit sizing reducers to patch your framework fast. We also carry the premium exterior hardware needed for full custom dual-stack conversions, including Peterbilt 386 exhaust brackets. Upgrade your Peterbilt 386 stacks with chrome 90-degree long drop elbows, mirror-polished center spools, and heavy-duty poly exhaust bushings to kill the bracket rattle.

Frequently Asked Questions About Peterbilt 386 Elbows, Piping & Comp.

What exhaust and air system components are included in this category?

This category covers elbows, piping sections, and related components used in the exhaust and air intake/charge air systems on Peterbilt 386 trucks. This includes exhaust elbows, straight and curved piping, and connecting pieces that route exhaust gases or air between the engine, turbo, muffler, and stacks.

Will these elbows and piping fit my specific Peterbilt 386 without modification?

Fit can vary depending on engine configuration, exhaust setup, and the model year of your truck, so it is important to check the listed diameter, angle, and length specifications against your existing components before ordering. If you are unsure, comparing your old part's measurements to the product listing is the most reliable way to confirm a proper fit.

What materials are these pipes and elbows made from, and how do they hold up?

Most piping and elbows in this category are constructed from aluminized or stainless steel to withstand high exhaust temperatures and resist corrosion over time. Stainless steel options generally offer better long-term resistance to rust, while aluminized steel provides a more budget-friendly alternative with solid heat resistance.

Do I need any special tools or professional help to install new piping or elbows?

Basic exhaust piping and elbows can often be installed with common hand tools, clamps, and possibly a torch or cutting tool if trimming is required. However, because proper alignment affects both performance and exhaust leaks, many owners choose to have installation done or checked by a qualified technician, especially for turbo-side or tightly routed sections.

Are these components compliant with emissions and noise regulations?

Replacement piping and elbows are generally designed to maintain the original exhaust flow path and are not intended to alter emissions performance when installed as a factory-equivalent replacement. That said, it is your responsibility to verify that any component you install keeps your truck compliant with DOT, EPA, and any state or local noise and emissions regulations that apply to your vehicle.


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