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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
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  • Quantity
  • Price
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  • BESTfit 3 Inch Diameter X 10.5 X 16 Inch Aluminized Steel Type B Y-Pipe

    BESTfit 3 Inch Diameter X 10.5 X 16 Inch Aluminized Steel Type B Y-Pipe

    BESTFIT TRUCK PARTS

    $287.99
    BESTfit 3 Inch Diameter X 10.5 X 16 Inch Aluminized Steel Type B Y-Pipe* High Quality Exhaust Y Pipe* Universal Type B* Made Of Aluminized Steel* Dimensions  - 3 Inch ID/OD/OD  - 10.5 Inch Width  -...
    09-080100299
    SKU:
    09-080100299
    Diameter Options:
    3 Inch
    Truck Class:
    Universal
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $287.99
    Qty in Cart: 0
    Price:
    $287.99
    Subtotal:
  • BESTfit 6 Inch I.D.-I.D. X 120 Inch Aluminized Steel Straight Tube

    BESTfit 6 Inch I.D.-I.D. X 120 Inch Aluminized Steel Straight Tube

    BESTFIT TRUCK PARTS

    $235.99
    BESTfit 6 Inch I.D.-I.D. X 120 Inch Aluminized Steel Straight Tube* High Quality Straight Tube I.D.-I.D.* Aluminized Steel* Dimensions  - 120 Inch Length  - 6 Inch Diameter* Made in The USA* Sold...
    09-080100298
    SKU:
    09-080100298
    Truck Class:
    Universal
    Diameter Options:
    6 Inch
    Length Options:
    120 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $235.99
    Qty in Cart: 0
    Price:
    $235.99
    Subtotal:
  • BESTfit 4 X 16 X 10.5 Inch Aluminized Steel Universal Type B Y-Pipe

    BESTfit 4 X 16 X 10.5 Inch Aluminized Steel Universal Type B Y-Pipe

    BESTFIT TRUCK PARTS

    $216.99
    BESTfit 4 X 16 X 10.5 Inch Aluminized Steel Universal Type B Y-PipeDiscover the benefits of upgrading with the BESTfit 4 X 16 X 10.5 Inch Aluminized Steel Universal Type B Y-Pipe. This high-quality,...
    09-080100210
    SKU:
    09-080100210
    Diameter Options:
    4 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Style Options:
    Y-Pipe
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $216.99
    Qty in Cart: 0
    Price:
    $216.99
    Subtotal:
  • BESTfit 5 X 14 X 25 Inch Chrome-Plated Steel Universal Type A Y-Pipe With Divider Plate

    BESTfit 5 X 14 X 25 Inch Chrome-Plated Steel Universal Type A Y-Pipe With Divider Plate

    BESTFIT TRUCK PARTS

    $460.99
    BESTfit 5 X 14 X 25 Inch Chrome-Plated Steel Universal Type A Y-Pipe With Divider Plate* High Quality Y Pipe* Chrome-Plated Steel* Y Shaped* Dimensions  - 5 Inch Diameter  - 25 Inch Width  - 14 Inch...
    09-080100207
    SKU:
    09-080100207
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Style Options:
    Y-Pipe
    Product Type:
    Exhaust
    $460.99
    Qty in Cart: 0
    Price:
    $460.99
    Subtotal:
  • BESTfit 5 Inch ID X 2 Inch OAL Steel Replacement Turbo Flange With 5.88 Inch OD For Cummins N14/ISX/3406/C15

    BESTfit 5 Inch ID X 2 Inch OAL Steel Replacement Turbo Flange With 5.88 Inch OD For Cummins N14/ISX/3406/C15

    BESTFIT TRUCK PARTS

    $56.99
    BESTfit 5 Inch I.D. X 2 Inch OAL Steel Replacement Turbo Flange With 5.88 Inch O.D. Fits Cummins N14/ISX/3406/C15Get your exhaust back to working great with this high quality, style D repair flange...
    09-080100201
    SKU:
    09-080100201
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Length Options:
    2 Inch
    Style Options:
    Cummins
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $56.99
    Qty in Cart: 0
    Price:
    $56.99
    Subtotal:
  • BESTfit 4 Inch ID X 2 Inch OAL Steel Replacement Turbo Flange With 4.75 Inch OD For Cummins L10/3176

    BESTfit 4 Inch ID X 2 Inch OAL Steel Replacement Turbo Flange With 4.75 Inch OD For Cummins L10/3176

    BESTFIT TRUCK PARTS

    $61.99
    BESTfit 4 Inch I.D. X 2 Inch OAL Steel Replacement Turbo Flange With 4.75 Inch O.D. Fits Cummins L10/3176Get the perfect fit on a 9N-6325 engine with this quality style D repair flange. It is made of...
    09-080100200
    SKU:
    09-080100200
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Length Options:
    2 Inch
    Style Options:
    Cummins
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $61.99
    Qty in Cart: 0
    Price:
    $61.99
    Subtotal:
  • BESTfit 4 Inch ID X 2 Inch OAL Steel Replacement Turbo Flange With 4.625 Inch OD For CAT 9N-6325

    BESTfit 4 Inch ID X 2 Inch OAL Steel Replacement Turbo Flange With 4.625 Inch OD For CAT 9N-6325

    BESTFIT TRUCK PARTS

    $73.99
    BESTfit 4 Inch I.D. X 2 Inch OAL Steel Replacement Turbo Flange With 4.625 Inch O.D. Fits CAT 9N-6325Get the perfect fit for your Cat Engine with this quality style D manifold outlet. It is made of a...
    09-080100199
    SKU:
    09-080100199
    Diameter Options:
    4 5/8 Inch
    Truck Class:
    Universal
    Length Options:
    2 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $73.99
    Qty in Cart: 0
    Price:
    $73.99
    Subtotal:
  • 5 Inch ID-OD X 6 Inch OAL Aluminized Steel Type A Turbo Pipe With 5.5 Inch Diameter Flange For CAT 3406/C15

    5 Inch ID-OD X 6 Inch OAL Aluminized Steel Type A Turbo Pipe With 5.5 Inch Diameter Flange For CAT 3406/C15

    AUTOMANN USA

    $31.15
    5 Inch ID-OD X 6 Inch OAL Aluminized Steel Type A Turbo PipeEnhance the turbo performance of your Caterpillar 3406 or C15 with the 5 Inch ID-OD X 6 Inch OAL Type A Turbo Pipe, featuring a 5.88-inch...
    09-080100198
    SKU:
    09-080100198
    Diameter Options:
    5 Inch
    Length Options:
    6 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $31.15
    Qty in Cart: 0
    Price:
    $31.15
    Subtotal:
  • 5 Inch ID-OD X 6 Inch OAL Aluminized Steel Type A Turbo Pipe With 5.5 Inch Diameter Flange For Cummins ISX/N14

    5 Inch ID-OD X 6 Inch OAL Aluminized Steel Type A Turbo Pipe With 5.5 Inch Diameter Flange For Cummins ISX/N14

    AUTOMANN USA

    $29.93
    5 Inch ID-OD X 6 Inch OAL Aluminized Steel Type A Turbo Pipe With 5.5 Inch Diameter Flange Fits Cummins ISX/N14Optimize your Cummins ISX or N14's exhaust system with the Aluminized Steel Type A Turbo...
    09-080100197
    SKU:
    09-080100197
    Diameter Options:
    5 Inch
    Length Options:
    6 Inch
    Style Options:
    Cummins
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $29.93
    Qty in Cart: 0
    Price:
    $29.93
    Subtotal:
  • BESTfit 5.25 Inch Machined Turbo Flare For Detroit Diesel Turbo 6V/8V92T

    BESTfit 5.25 Inch Machined Turbo Flare For Detroit Diesel Turbo 6V/8V92T

    BESTFIT TRUCK PARTS

    $272.99
    BESTfit Aluminized Steel Type A Turbo Pipe With FlangeRedefine your Detroit engine with the BESTfit 5 Inch ID-O.D. X 4 Inch OAL Aluminized Steel Type A Turbo Pipe from 4 State Trucks. This turbo...
    09-080100196
    SKU:
    09-080100196
    Diameter Options:
    5 Inch
    Length Options:
    4 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $272.99
    Qty in Cart: 0
    Price:
    $272.99
    Subtotal:
  • BESTfit 4 ID/OD X 6 Inch Aluminized Turbo Outlet Adapter With Flange For Detroit 671/12V71

    BESTfit 4 ID/OD X 6 Inch Aluminized Turbo Outlet Adapter With Flange For Detroit 671/12V71

    BESTFIT TRUCK PARTS

    $31.83
    BESTfit 4.75 Inch Turbo Flare Lip for Detroit Diesel 671/12V71Get the perfect fit for your Detroit Diesel 12V71 Turbo with this quality style C manifold outlet. It is made of a rust and corrosion...
    09-080100195
    SKU:
    09-080100195
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    6 Inch
    Product Type:
    Exhaust
    $31.83
    Qty in Cart: 0
    Price:
    $31.83
    Subtotal:
  • BESTfit 4 ID/OD X 4 Inch Aluminized Turbo Outlet Adapter With Flange Style A For L10 Cummins

    BESTfit 4 ID/OD X 4 Inch Aluminized Turbo Outlet Adapter With Flange Style A For L10 Cummins

    BESTFIT TRUCK PARTS

    $31.83
    BESTfit 4 Inch ID-OD X 4 Inch OAL Aluminized Steel Type A Turbo Pipe* High Quality Turbo Manifold Outlet* Style A* Highly Corrosion Resistant* Made Of Durable And Strong Aluminized Steel* 4 Inch...
    09-080100194
    SKU:
    09-080100194
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Style Options:
    Cummins
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    4 Inch
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $31.83
    Qty in Cart: 0
    Price:
    $31.83
    Subtotal:
  • BESTfit 4 ID/OD X 4 Inch Aluminized Turbo Outlet Adapter With Flange Style A For CAT 3306

    BESTfit 4 ID/OD X 4 Inch Aluminized Turbo Outlet Adapter With Flange Style A For CAT 3306

    BESTFIT TRUCK PARTS

    $32.89
    BESTfit 4 Inch ID-OD X 4 Inch OAL Aluminized Steel Type A Turbo Pipe* High Quality Turbo Manifold Outlet* Style A* Highly Corrosion Resistant* Made Of Durable And Strong Aluminized Steel* 4 Inch...
    09-080100193
    SKU:
    09-080100193
    Diameter Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    4 Inch
    Product Type:
    Exhaust
    $32.89
    Qty in Cart: 0
    Price:
    $32.89
    Subtotal:
  • BESTfit 4 ID/OD X 6 Inch Inch Aluminized Turbo Outlet Adapter With Flange Style A For Cummins

    BESTfit 4 ID/OD X 6 Inch Inch Aluminized Turbo Outlet Adapter With Flange Style A For Cummins

    BESTFIT TRUCK PARTS

    $38.20
    BESTfit 4 Inch I.D.-O.D. X 6 Inch OAL Aluminized Steel Type A Turbo Pipe With 4.5 Inch Diameter Flange Fits CumminsGet the perfect fit for your Cummins Engine with this quality type A manifold outlet...
    09-080100192
    SKU:
    09-080100192
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Style Options:
    Cummins
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    6 Inch
    Product Type:
    Exhaust
    $38.20
    Qty in Cart: 0
    Price:
    $38.20
    Subtotal:
  • BESTfit 3.5 ID/OD X 6 Inch Inch Aluminized Turbo Outlet Adapter With Flange Style B For Detroit 8V71

    BESTfit 3.5 ID/OD X 6 Inch Inch Aluminized Turbo Outlet Adapter With Flange Style B For Detroit 8V71

    BESTFIT TRUCK PARTS

    $31.83
    BESTfit 3.5 Inch I.D.-O.D. X 6 Inch OAL Aluminized Steel Type B Turbo Pipe With 4.25 Inch Diameter Flange Fits Detroit 8V71Get the perfect fit for your Detroit Diesel 8V71 Engine with this quality...
    09-080100191
    SKU:
    09-080100191
    Truck Class:
    Universal
    Diameter Options:
    3 1/2 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    6 Inch
    Product Type:
    Exhaust
    $31.83
    Qty in Cart: 0
    Price:
    $31.83
    Subtotal:
  • 3.5 Inch ID-OD X 4 Inch OAL Aluminized Steel Type A Turbo Pipe With 4.07 Inch Diameter Flange For CAT 3208T

    3.5 Inch ID-OD X 4 Inch OAL Aluminized Steel Type A Turbo Pipe With 4.07 Inch Diameter Flange For CAT 3208T

    BESTFIT TRUCK PARTS

    $33.06
    3.5 Inch ID-OD X 4 Inch OAL Aluminized Steel Type A Turbo PipeOptimize your CAT 3208T turbo system with the Type A Turbo Pipe, 3.5 Inch ID-OD X 4 Inch OAL, designed for durability, reliability, and...
    09-080100190
    SKU:
    09-080100190
    Truck Class:
    Universal
    Diameter Options:
    3 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    4 Inch
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $33.06
    Qty in Cart: 0
    Price:
    $33.06
    Subtotal:
  • BESTfit 3.5 ID/OD X 6 InchTurbo Outlet Adapter With Flange Style A For Detroit Diesel

    BESTfit 3.5 ID/OD X 6 InchTurbo Outlet Adapter With Flange Style A For Detroit Diesel

    BESTFIT TRUCK PARTS

    $28.65
    BESTfit 3.5 Inch I.D.-O.D. X 6 Inch OAL Aluminized Steel Type A Turbo Pipe With 4 Inch Diameter Flange Fits Detroit DieselGet the perfect fit with this quality type A manifold outlet. It is made of a...
    09-080100189
    SKU:
    09-080100189
    Diameter Options:
    3 Inch
    Truck Class:
    Universal
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    6 Inch
    Product Type:
    Exhaust
    $28.65
    Qty in Cart: 0
    Price:
    $28.65
    Subtotal:
  • BESTfit 3 ID/OD X 6 Inch Turbo Outlet Adapter With Flange Style A

    BESTfit 3 ID/OD X 6 Inch Turbo Outlet Adapter With Flange Style A

    BESTFIT TRUCK PARTS

    $29.86
    BESTfit 3 Inch I.D.-O.D. X 6 Inch OAL Aluminized Steel Type A Turbo Pipe With 3.75 Inch Diameter FlangeGet the perfect fit with this quality type A manifold outlet. It is made of a rust and corrosion...
    09-080100188
    SKU:
    09-080100188
    Diameter Options:
    3 Inch
    Truck Class:
    Universal
    Style Options:
    Flanged
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    6 Inch
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $29.86
    Qty in Cart: 0
    Price:
    $29.86
    Subtotal:
  • BESTfit 3 ID/OD X 6 Inch Turbo Outlet Adapter For Detroit Diesel L V71

    BESTfit 3 ID/OD X 6 Inch Turbo Outlet Adapter For Detroit Diesel L V71

    BESTFIT TRUCK PARTS

    $22.83
    BESTfit 3 Inch I.D.-O.D. X 6 Inch OAL Aluminized Steel Type B Turbo Pipe With 3.62 Inch Diameter FlangeGet the perfect fit for a Detroit Diesel Turbo L V71 with this quality type B manifold outlet...
    09-080100187
    SKU:
    09-080100187
    Diameter Options:
    6 Inch
    Truck Class:
    Universal
    Length Options:
    6 Inch
    Style Options:
    Flanged
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $22.83
    Qty in Cart: 0
    Price:
    $22.83
    Subtotal:
  • BESTfit Aluminized Exhaust Connector 5 OD X 5 OD X 8 Inch

    BESTfit Aluminized Exhaust Connector 5 OD X 5 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $41.36
    BESTfit 5 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Connector Pipe* High Quality Connector* Can Be Used To Join Flex Hose Together* Both Ends Have O.D. Connections* Made Of Durable 16 Gauge...
    09-080100186
    SKU:
    09-080100186
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $41.36
    Qty in Cart: 0
    Price:
    $41.36
    Subtotal:
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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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