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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
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  • TPHD 4 Inch X 10 Foot Stainless Steel Flex Pipe

    TPHD 4 Inch X 10 Foot Stainless Steel Flex Pipe

    TPHD

    $239.99
    10 Foot Continuous 4 Inch Flex Pipe Roll* High Quality Flex Pipe* Stainless Steel* 4 Inch* 10 Foot Continuous Roll* Sold Individually* Warranty On Flex Pipes Against Defects In Workmanship & Material...
    09-080443
    SKU:
    09-080443
    Truck Class:
    Universal
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Diameter Options:
    4 Inch
    Product Type:
    Exhaust
    $239.99
    Qty in Cart: 0
    Price:
    $239.99
    Subtotal:
  • Commercial Vehicle Catalytic Converter Security

    Commercial Vehicle Catalytic Converter Security

    AFTERMARKET

    $178.99
    Security Shield For Your Catalytic ConverterSafeguard your catalytic converter from theft with the top-of-the-line Security Shield, specifically designed to protect commercial vehicles. This...
    09-080200015
    SKU:
    09-080200015
    Material Options:
    Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $178.99
    Qty in Cart: 0
    Price:
    $178.99
    Subtotal:
  • Chrome 5 Inch Y Pipe With Divider 25 In W X 14 In H

    Chrome 5 Inch Y Pipe With Divider 25 In W X 14 In H

    UNITED PACIFIC

    $181.99
    Aluminized 5 Inch Y Exhaust Pipe With Divider* High Quality Y Pipe* Chrome-Plated* 25 Inch W X 14 Inch H* Triple Chrome Plating Process* Sold Individually* Warranty On Y Pipes Against Defects In...
    09-080100541
    SKU:
    09-080100541
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Style Options:
    Y-Pipe
    Product Type:
    Exhaust
    $181.99
    Qty in Cart: 0
    Price:
    $181.99
    Subtotal:
  • Chrome 90 Degree Exhaust Elbow Reduce 6 Inch O.D. To 5 Inch I.D. - 13 Inch X 13 Inch

    Chrome 90 Degree Exhaust Elbow Reduce 6 Inch O.D. To 5 Inch I.D. - 13 Inch X 13 Inch

    UNITED PACIFIC

    $223.99
    Chrome 90 Degree Exhaust Elbow Reduce* High Quality Exhaust Elbow* Chrome-Plated* 6 Inch O.D. To 5 Inch I.D.- 13 Inch X 13 Inch* 90 Degree* With Triple Chrome Plating Process* Sold Individually*...
    09-080100486
    SKU:
    09-080100486
    Truck Class:
    Universal
    Diameter Options:
    6 Inch
    Style Options:
    Elbow
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Degree Options:
    90
    Product Type:
    Exhaust
    $223.99
    Qty in Cart: 0
    Price:
    $223.99
    Subtotal:
  • Aluminized 45 Degree Exhaust Expanded Elbow 6 Inch I.D. To 6 Inch O.D. - 15 X 15 Inch

    Aluminized 45 Degree Exhaust Expanded Elbow 6 Inch I.D. To 6 Inch O.D. - 15 X 15 Inch

    UNITED PACIFIC

    $144.99
    Aluminized 45 Degree Exhaust Expanded Elbow* High Quality Exhaust Expanded Elbow* Aluminized Steel* 6 Inch Inside Diameter To Another With 6 Inch Outside Diameter* 15 Inch X 15 Inch Dimension* 45...
    09-080100437
    SKU:
    09-080100437
    Truck Class:
    Universal
    Diameter Options:
    6 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Degree Options:
    45
    Product Type:
    Exhaust
    $144.99
    Qty in Cart: 0
    Price:
    $144.99
    Subtotal:
  • Aluminized 5 Inch Y Pipe - 11.5 In W X 16.25 In H

    Aluminized 5 Inch Y Pipe - 11.5 In W X 16.25 In H

    UNITED PACIFIC

    $119.99
    Aluminized 5 Inch Y Exhaust Pipe* High Quality Y Pipe* Aluminized Steel* 11.5 Inch W X 16.25 Inch L* Sold Individually* Warranty On Y Pipes Against Defects In Workmanship & Material From Date Of...
    09-080100537
    SKU:
    09-080100537
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Length Options:
    16 Inch
    Style Options:
    Y-Pipe
    Product Type:
    Exhaust
    $119.99
    Qty in Cart: 0
    Price:
    $119.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Aluminized 90 Degree Exhaust Expanded Elbow 4 In Id To 4 In Od - 12 X 12 Inch

    Aluminized 90 Degree Exhaust Expanded Elbow 4 In Id To 4 In Od - 12 X 12 Inch

    UNITED PACIFIC

    $48.17
    90 Degree Exhaust Expanded Elbow* High Quality Exhaust Expanded Elbow* Aluminized Steel* 4 Inch I.D. To 4 Inch O.D.* 12 Inch X 12 Inch* 90 Degree* Sold Individually* Warranty On Exhaust Expanded...
    09-080100439
    SKU:
    09-080100439
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Degree Options:
    90
    Product Type:
    Exhaust
    $48.17
    Qty in Cart: 0
    Price:
    $48.17
    Subtotal:
  • Aluminized 60 Degree Exhaust Expanded Elbow 5 In Id To 5 In OD - 10 X 10 Inch

    Aluminized 60 Degree Exhaust Expanded Elbow 5 In Id To 5 In OD - 10 X 10 Inch

    UNITED PACIFIC

    $79.99
    60 Degree Exhaust Expanded Elbow* High Quality Exhaust Expanded Elbow* Aluminized Steel* 5 Inch Id To 5 Inch Od* 10 Inch X 10 Inch * 60 Degree* Sold Individually* Warranty On Exhaust Expanded Elbows...
    09-080100438
    SKU:
    09-080100438
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Degree Options:
    60
    Product Type:
    Exhaust
    $79.99
    Qty in Cart: 0
    Price:
    $79.99
    Subtotal:
  • BESTfit Chrome Long Drop 90 Degree Exhaust Elbow For Peterbilt

    BESTfit Chrome Long Drop 90 Degree Exhaust Elbow For Peterbilt

    BESTFIT TRUCK PARTS

    $425.99 - $610.99
    Give your Peterbilt 378 or 379 a polished, professional exhaust upgrade with the BESTfit Chrome Long Drop 90-Degree Exhaust Elbow. With several sizing options-66, 65, 77, 75, 88, and 85-this chrome...
    PPR_23846
    SKU:
    PPR_23846
    Truck Class:
    Heavy Duty
    Style Options:
    Long Drop
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $425.99 - $610.99
    Qty in Cart: 0
    Price:
    $425.99 - $610.99
    Subtotal:
  • BESTfit 5 Inch ID-OD Chrome Exhaust Elbow - 90 Degree Bend

    BESTfit 5 Inch ID-OD Chrome Exhaust Elbow - 90 Degree Bend

    BESTFIT TRUCK PARTS

    $224.99 - $304.99
    A 5-inch ID/OD chrome exhaust elbow with a 90-degree bend is designed for heavy-duty truck exhaust systems where a compact directional change is required. Built from chrome-plated steel, it is...
    PPR_203227
    SKU:
    PPR_203227
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Material Options:
    Steel
    Degree Options:
    90
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Style Options:
    Elbow
    Ready To Ship:
    Yes
    $224.99 - $304.99
    Qty in Cart: 0
    Price:
    $224.99 - $304.99
    Subtotal:
  • BESTfit 5 Inch ID-OD Aluminized Steel Exhaust Elbow - 90 Degree Bend

    BESTfit 5 Inch ID-OD Aluminized Steel Exhaust Elbow - 90 Degree Bend

    BESTFIT TRUCK PARTS

    $56.99 - $106.99
    Improve exhaust setup with the BESTfit 5-inch ID/OD 90-degree aluminized steel exhaust elbow, designed for practical use in heavy-duty systems. Manufactured from 16-gauge aluminized steel, this elbow...
    PPR_203226
    SKU:
    PPR_203226
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $56.99 - $106.99
    Qty in Cart: 0
    Price:
    $56.99 - $106.99
    Subtotal:
  • BESTfit 5 Inch OD-OD Chrome Exhaust Elbow - 90 Degree Bend

    BESTfit 5 Inch OD-OD Chrome Exhaust Elbow - 90 Degree Bend

    BESTFIT TRUCK PARTS

    $184.99 - $251.99
    Optimize exhaust routing with the BESTfit 5-inch OD/OD chrome exhaust elbow, a practical solution for creating a smooth 90-degree turn in heavy-duty systems. Constructed from chrome-plated steel,...
    PPR_203225
    SKU:
    PPR_203225
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Material Options:
    Steel
    Degree Options:
    90
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    Style Options:
    Elbow
    $184.99 - $251.99
    Qty in Cart: 0
    Price:
    $184.99 - $251.99
    Subtotal:
  • BESTfit 5 Inch OD-OD Aluminized Steel Exhaust Elbow - 90 Degree Bend

    BESTfit 5 Inch OD-OD Aluminized Steel Exhaust Elbow - 90 Degree Bend

    BESTFIT TRUCK PARTS

    $56.99 - $99.99
    Take your setup to the next level with the BESTfit 5-inch OD/OD aluminized steel exhaust elbow, designed to deliver a reliable 90-degree bend for heavy-duty applications. Built from durable...
    PPR_203224
    SKU:
    PPR_203224
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $56.99 - $99.99
    Qty in Cart: 0
    Price:
    $56.99 - $99.99
    Subtotal:
  • BESTfit 5 ID/ID Inch SS Connector Pipe - Repair Section

    BESTfit 5 ID/ID Inch SS Connector Pipe - Repair Section

    BESTFIT TRUCK PARTS

    $77.99 - $139.99
    This 5-inch ID aluminized steel connector is built from 16-gauge aluminized steel, intended to offer improved resistance to rust and corrosion compared to standard steel. The 5-inch inside diameter...
    PPR_203222
    SKU:
    PPR_203222
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Material Options:
    Aluminized Steel
    Size Options:
    16 Gauge
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $77.99 - $139.99
    Qty in Cart: 0
    Price:
    $77.99 - $139.99
    Subtotal:
  • BESTfit 4 ID/ID SS Connector Pipe - Repair Section

    BESTfit 4 ID/ID SS Connector Pipe - Repair Section

    BESTFIT TRUCK PARTS

    $44.55 - $95.99
    Restore your exhaust with the BESTfit 4-inch ID/ID 16-gauge aluminized steel repair pipe. This connector-style pipe features a 4-inch inner diameter on both ends. Built from 16-gauge aluminized...
    PPR_203221
    SKU:
    PPR_203221
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Size Options:
    16 Gauge
    Material Options:
    Aluminized Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    $44.55 - $95.99
    Qty in Cart: 0
    Price:
    $44.55 - $95.99
    Subtotal:
  • FREE SHIPPING OVER $249
    5 Inch ID Stainless Steel Exhaust Flex Pipe

    5 Inch ID Stainless Steel Exhaust Flex Pipe

    AFTERMARKET

    $99.99 - $164.99
    Refresh your exhaust system with a 5-inch ID stainless steel flex pipe designed for universal applications. Built from stainless steel, this flex pipe is engineered to help absorb engine vibration...
    PPR_202898
    SKU:
    PPR_202898
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Length Options:
    48 Inch
    Length Options:
    36 Inch
    Material Options:
    Stainless Steel
    Length Options:
    60 Inch
    Location:
    Made In USA
    Ready To Ship:
    Yes
    $99.99 - $164.99
    Qty in Cart: 0
    Price:
    $99.99 - $164.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 4 ID Inch Stainless Steel Flex Pipe

    TPHD 4 ID Inch Stainless Steel Flex Pipe

    TPHD

    $20.69 - $391.99
    Upgrade your exhaust system with the 4-inch ID stainless steel flex pipe, designed as a universal solution. Constructed from stainless steel, this flex pipe is built to provide improved corrosion...
    PPR_202897
    SKU:
    PPR_202897
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Location:
    Made In USA
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $20.69 - $391.99
    Qty in Cart: 0
    Price:
    $20.69 - $391.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 5 Inch Aluminized Exhaust Tubing Sold By Foot

    BESTfit 5 Inch Aluminized Exhaust Tubing Sold By Foot

    BESTFIT TRUCK PARTS

    $13.46 - $185.99
    This 5?inch aluminized exhaust tubing sold by the foot gives you a flexible way to build or repair heavy?duty exhaust systems using straight sections of aluminized steel with a 5? outer diameter. You...
    PPR_201902
    SKU:
    PPR_201902
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Length Options:
    36 Inch
    Style Options:
    Straight Style
    Length Options:
    12 Inch
    Length Options:
    72 Inch
    Height Options:
    2 3/4 Inch
    Length Options:
    7 1/2 Inch
    Length Options:
    120 Inch
    Size Options:
    16 Gauge
    Ready To Ship:
    Yes
    $13.46 - $185.99
    Qty in Cart: 0
    Price:
    $13.46 - $185.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit DPF Filter Clamp Replaces 2871863 & 21445455

    BESTfit DPF Filter Clamp Replaces 2871863 & 21445455

    BESTFIT TRUCK PARTS

    $34.16
    BESTfit Filter Clamp For DPFThe BESTfit DPF Filter Clamp delivers a reliable solution for keeping your DPF filter securely in place. Replacing part numbers 2871863 and 21445455, this high-quality...
    29-0809201
    SKU:
    29-0809201
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Make:
    Peterbilt
    Make:
    Western Star
    Make:
    International
    Make:
    Freightliner
    Product Type:
    Exhaust
    $34.16
    Qty in Cart: 0
    Price:
    $34.16
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 5295606NX, 5579357 For Cummins ISC Engine

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 5295606NX, 5579357 For Cummins ISC Engine

    GLOBAL EMISSIONS

    $2,020.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISC Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...
    29-080600049
    SKU:
    29-080600049
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $2,020.99
    Qty in Cart: 0
    Price:
    $2,020.99
    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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