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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
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  • Price
  • Subtotal
  • 5 ID X 24 Inch Galvanized Steel Flex Tubing

    5 ID X 24 Inch Galvanized Steel Flex Tubing

    AUTOMANN USA

    $37.50
    5 Inch ID Galvanized Steel Drop Flex Tubing Replaces G15524, J024837* High Quality Flex Tubing* Galvanized Steel* Dimensions:  - 5 Inch I.D.  - 24 Inch Length* Sold Individually* Warranty On Flex...
    09-08010065
    SKU:
    09-08010065
    Material Options:
    Stainless Steel
    Product Type:
    Exhaust
    Truck Class:
    Heavy Duty
    Finish Options:
    Galvanized
    Make:
    Universal Items
    $37.50
    Qty in Cart: 0
    Price:
    $37.50
    Subtotal:
  • 4 ID Inch X 25 Ft 304 Stainless Steel Flex Tubing

    4 ID Inch X 25 Ft 304 Stainless Steel Flex Tubing

    AUTOMANN USA

    $798.99
    4 Inch ID 304 Stainless Steel Drop Flex Tubing Replaces SF4300* High Quality Tubing* 304 Stainless Steel* Dimensions:  - 4 Inch Diameter  - 25 Ft Length* Flexible* Sold Individually* Warranty On...
    09-08010056
    SKU:
    09-08010056
    Material Options:
    Stainless Steel
    Product Type:
    Exhaust
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $798.99
    Qty in Cart: 0
    Price:
    $798.99
    Subtotal:
  • 3.5 ID X 12 Inch 409 Stainless Steel Flex Tubing

    3.5 ID X 12 Inch 409 Stainless Steel Flex Tubing

    AUTOMANN USA

    $31.03
    3.5 Inch ID 409 Stainless Steel Drop Flex Tubing Replaces 89616K* High Quality Flex Tubing* 409 Stainless Steel* Dimensions:  - 3.5 Inch I.D.  - 12 Inch Length* Sold Individually* Warranty On Flex...
    09-08010066
    SKU:
    09-08010066
    Product Type:
    Exhaust
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $31.03
    Qty in Cart: 0
    Price:
    $31.03
    Subtotal:
  • LC 8 Inch OD Chrome 60 Degree Elbow For Peterbilt

    LC 8 Inch OD Chrome 60 Degree Elbow For Peterbilt

    LINCOLN CHROME

    $521.99
    8 Inch OD Chrome 60 Degree Elbow By Lincoln ChromeAdd durability and a polished look to your Peterbilt exhaust system with the 8 Inch OD Chrome 60 Degree Elbow by Lincoln Chrome. The 60-degree bend,...
    01-0818001
    SKU:
    01-0818001
    Material Options:
    Steel
    Length Options:
    8 Inch
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Degree Options:
    60
    Style Options:
    Elbow
    Make:
    Peterbilt
    $521.99
    Qty in Cart: 0
    Price:
    $521.99
    Subtotal:
  • LC 6 Inch OD Chrome 60 Degree Elbow For Peterbilt

    LC 6 Inch OD Chrome 60 Degree Elbow For Peterbilt

    LINCOLN CHROME

    $466.99
    6 Inch OD Chrome 60 Degree Elbow By Lincoln ChromeImprove your Peterbilt's exhaust routing with the 6 Inch OD Chrome 60 Degree Elbow by Lincoln Chrome. Built with durable chrome, this elbow features...
    01-0816001
    SKU:
    01-0816001
    Finish Options:
    Chrome-Plated
    Style Options:
    Elbow
    Degree Options:
    60
    Product Type:
    Exhaust
    Length Options:
    6 Inch
    Material Options:
    Steel
    Make:
    Peterbilt
    $466.99
    Qty in Cart: 0
    Price:
    $466.99
    Subtotal:
  • BESTfit 4 X 12 Inch Stainless Steel Flare Flex Pipe Replaces M66-3541 For Peterbilt

    BESTfit 4 X 12 Inch Stainless Steel Flare Flex Pipe Replaces M66-3541 For Peterbilt

    BESTFIT TRUCK PARTS

    $257.99
    4 X 12 Inch Flare Flex Pipe By BESTfitMaintain efficient exhaust flow with the BESTfit 4 x 12 Inch Stainless Steel Flare Flex Pipe. Designed with flared bead ends and 4-inch diameter, this stainless...
    GR-PB-6541-0335
    SKU:
    GR-PB-6541-0335
    Product Type:
    Exhaust
    $257.99
    Qty in Cart: 0
    Price:
    $257.99
    Subtotal:
  • BESTfit 3 X 10 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate

    BESTfit 3 X 10 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate

    BESTFIT TRUCK PARTS

    $222.99
    BESTfit 3 X 10 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider PlateKeep the exhaust balanced and exhaust gasses at lower temperatures with this quality Y Pipe. It is constructed...
    09-080100202
    SKU:
    09-080100202
    Product Type:
    Exhaust
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Diameter Options:
    3 Inch
    Make:
    Universal Items
    $222.99
    Qty in Cart: 0
    Price:
    $222.99
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  • BESTfit 4 X 12 X 26 Inch Aluminized Steel Universal Type A Y-Pipe With Divider Plate

    BESTfit 4 X 12 X 26 Inch Aluminized Steel Universal Type A Y-Pipe With Divider Plate

    BESTFIT TRUCK PARTS

    $317.99
    BESTfit 4 X 12 X 26 Inch Aluminized Steel Universal Type A Y-Pipe With Divider PlateMade with an aluminized steel, this Universal Type A Y pipe is designed to keep the exhaust balance and gasses at...
    09-080100204
    SKU:
    09-080100204
    Length Options:
    12 Inch
    Height Options:
    12 Inch
    Material Options:
    Aluminized Steel
    Truck Class:
    Heavy Duty
    Diameter Options:
    4 Inch
    Product Type:
    Exhaust
    Make:
    Universal Items
    $317.99
    Qty in Cart: 0
    Price:
    $317.99
    Subtotal:
  • BESTfit 3.5 X 10 X 14 Inch Aluminized Steel Universal Type A Y-Pipe W/ No Divider Plate

    BESTfit 3.5 X 10 X 14 Inch Aluminized Steel Universal Type A Y-Pipe W/ No Divider Plate

    BESTFIT TRUCK PARTS

    $194.99
    Aluminized Steel Type A Universal Y-Pipe W/ 10 Inch Tail & No Divider PlateKeep the exhaust balanced and gasses at lower temperatures with this quality Y Pipe. It is constructed with a corrosion and...
    09-080100203
    SKU:
    09-080100203
    Product Type:
    Exhaust
    Material Options:
    Aluminized Steel
    Truck Class:
    Heavy Duty
    Diameter Options:
    3 Inch
    Make:
    Universal Items
    $194.99
    Qty in Cart: 0
    Price:
    $194.99
    Subtotal:
  • BESTfit 4 X 8 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate

    BESTfit 4 X 8 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate

    BESTFIT TRUCK PARTS

    $256.99
    BESTfit 4 X 8 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider PlateAre you wanting to increase engine power? 4 State trucks offers this quality Y Pipe that can improve the flow of...
    09-080100205
    SKU:
    09-080100205
    Diameter Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Product Type:
    Exhaust
    Make:
    Universal Items
    $256.99
    Qty in Cart: 0
    Price:
    $256.99
    Subtotal:
  • BESTfit 7 Inch Chrome 90 Degree Retro Long Drop Elbow 18 x 39 Inch For Peterbilt

    BESTfit 7 Inch Chrome 90 Degree Retro Long Drop Elbow 18 x 39 Inch For Peterbilt

    BESTFIT TRUCK PARTS

    $683.99
    Replacement Peterbilt Retro 90 Degree Chrome Long Drop ElbowThe BESTfit 7 Inch Chrome 90 Degree Retro Long Drop Elbow is a high-quality exhaust component designed for Peterbilt trucks. Featuring a...
    01-08070080
    SKU:
    01-08070080
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Diameter Options:
    7 Inch
    Position:
    Kit Full
    Make:
    Peterbilt
    $683.99
    Qty in Cart: 0
    Price:
    $683.99
    Subtotal:
  • 7 - 5 Inch OD Chrome Universal 90 Degree Exhaust Elbow By Lincoln Chrome

    7 - 5 Inch OD Chrome Universal 90 Degree Exhaust Elbow By Lincoln Chrome

    LINCOLN CHROME

    $589.99
    Lincoln Universal 90 Degree Chrome Elbow 7 Inch To 5 Inch Top Leg 26 Inches Lower Leg 26 Inches* High Quality Exhaust Elbow* Chrome-Plated * 7 Inch To 5 Inch Od* 90 Degree* With 26 Inch Legs On Each...
    09-08037503
    SKU:
    09-08037503
    Truck Class:
    Heavy Duty
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Make:
    Universal Items
    $589.99
    Qty in Cart: 0
    Price:
    $589.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Black Exhaust Bracket Bushing - 4 Pack For Peterbilt

    Black Exhaust Bracket Bushing - 4 Pack For Peterbilt

    TRUX ACCESSORIES

    Now: $1.11
    Was: $21.24
    Peterbilt Black Exhaust Bracket Bushing - 4 PackMaintain optimal exhaust system performance with this Black Exhaust Bracket Bushing 4-Pack, specially designed for Peterbilt trucks. These bushings...
    01-0800061
    SKU:
    01-0800061
    Product Type:
    Exhaust
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Availability:
    Ready To Ship
    Now: $1.11
    Was: $21.24
    Qty in Cart: 0
    Price:
    Now: $1.11
    Was: $21.24
    Subtotal:
  • 4 ID X 12 Inch Stainless Steel Flex Pipe Replaces SF412, J240006, 89726K

    4 ID X 12 Inch Stainless Steel Flex Pipe Replaces SF412, J240006, 89726K

    AFTERMARKET

    $50.99
    4 ID X 12 Inch SS Flex TubingReplace faulty exhaust sections with the 4 ID x 12 Inch Stainless Steel Flex Pipe. Stainless steel construction provides durability and corrosion resistance. Its 4-inch...
    29-08040011
    SKU:
    29-08040011
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Diameter Options:
    4 Inch
    Make:
    Universal Items
    Product Type:
    Exhaust
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • Exhaust Drop Flex Tubing W/ Material & Size Options

    Exhaust Drop Flex Tubing W/ Material & Size Options

    AFTERMARKET

    $53.99 - $64.99
    Upgrade your exhaust system with our high-quality Exhaust Drop Flex Tubing, available in multiple ID sizes, lengths, and material options to match a wide range of heavy-duty truck applications. Each...
    PPR_298969
    SKU:
    PPR_298969
    Diameter Options:
    3 Inch
    Length Options:
    24 Inch
    Diameter Options:
    5 Inch
    Diameter Options:
    3 1/2 Inch
    Length Options:
    36 Inch
    Length Options:
    18 Inch
    Truck Class:
    Heavy Duty
    Finish Options:
    Galvanized
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $53.99 - $64.99
    Qty in Cart: 0
    Price:
    $53.99 - $64.99
    Subtotal:
  • Aluminized Steel Exhaust Pipe Adapters & Connectors

    Aluminized Steel Exhaust Pipe Adapters & Connectors

    AUTOMANN USA

    $25.43 - $46.25
    Ensure a precise and durable connection in your truck's exhaust system with the Aluminized Steel Exhaust Pipe Adapters & Connectors. Available in multiple sizes-including 5 ID to 4 ID x 8-inch, 4 OD...
    PPR_298961
    SKU:
    PPR_298961
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $25.43 - $46.25
    Qty in Cart: 0
    Price:
    $25.43 - $46.25
    Subtotal:
  • 4 OD/ ID Inch Aluminized Steel Exhaust Elbow

    4 OD/ ID Inch Aluminized Steel Exhaust Elbow

    AFTERMARKET

    $67.99 - $75.99
    Ensure smooth exhaust flow with the 4 OD/ID Inch Aluminized Steel Exhaust Elbow. Crafted from corrosion-resistant aluminized steel, these elbows are built to last under harsh conditions. Multiple...
    PPR_206051
    SKU:
    PPR_206051
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $67.99 - $75.99
    Qty in Cart: 0
    Price:
    $67.99 - $75.99
    Subtotal:
  • Aluminized Steel 90 Degree Exhaust Elbow 4 OD / OD X 6 Inch

    Aluminized Steel 90 Degree Exhaust Elbow 4 OD / OD X 6 Inch

    AFTERMARKET

    $58.99
    90 Degree Exhaust Elbow* High Quality Exhaust Elbow* Aluminized Steel* Dimensions:  - 4 Inch OD/OD  - 12 Inch Overall Length (6x6)* 0.062 Inch Thickness* Bend Angle- 60 Degree* Made In USA* Sold...
    09-08010046
    SKU:
    09-08010046
    Truck Class:
    Heavy Duty
    Degree Options:
    60
    Style Options:
    Angled
    Length Options:
    6 Inch
    Diameter Options:
    4 Inch
    Make:
    Universal Items
    Product Type:
    Exhaust
    Material Options:
    Aluminized Steel
    $58.99
    Qty in Cart: 0
    Price:
    $58.99
    Subtotal:
  • 3.5 ID/ OD X 16 Inch Aluminized Steel 90 Degree Exhaust Elbow

    3.5 ID/ OD X 16 Inch Aluminized Steel 90 Degree Exhaust Elbow

    AFTERMARKET

    $56.99
    3.5 ID/ OD X 16 Inch 90 Degree Exhaust ElbowReplace old or damaged exhaust elbows with the 3.5 ID/OD x 16 Inch Aluminized Steel 90 Degree Exhaust Elbow. Made from aluminized steel with 0.062-inch...
    09-08010045
    SKU:
    09-08010045
    Diameter Options:
    3 1/2 Inch
    Degree Options:
    90
    Truck Class:
    Heavy Duty
    Style Options:
    Elbow
    Length Options:
    16 Inch
    Make:
    Universal Items
    Product Type:
    Exhaust
    Material Options:
    Aluminized Steel
    $56.99
    Qty in Cart: 0
    Price:
    $56.99
    Subtotal:
  • 3.5 ID/ OD X 12 Inch Aluminized Steel 90 Degree Exhaust Elbow

    3.5 ID/ OD X 12 Inch Aluminized Steel 90 Degree Exhaust Elbow

    AFTERMARKET

    $65.99
    3.5 ID/ OD X 12 Inch 90 Degree Exhaust ElbowAchieve a clean 90 degree exhaust turn with the 3.5 ID/OD x 12 Inch Aluminized Steel Exhaust Elbow. Built from premium aluminized steel, it provides...
    09-08010044
    SKU:
    09-08010044
    Length Options:
    12 Inch
    Diameter Options:
    3 1/2 Inch
    Style Options:
    Elbow
    Degree Options:
    90
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Material Options:
    Aluminized Steel
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
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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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