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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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  • 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 Inch OD-ID X 48 Inch 16 Gauge Aluminized Steel Tube

    BESTfit 4 Inch OD-ID X 48 Inch 16 Gauge Aluminized Steel Tube

    BESTFIT TRUCK PARTS

    $87.99
    BESTfit 4 Inch O.D.-I.D. X 48 Inch 16 Gauge Aluminized Steel TubeOptimize your vehicle's exhaust flow with the precision-crafted BESTfit 4 Inch O.D.-I.D. X 48 Inch 16 Gauge Aluminized Steel Tube...
    09-080100184
    SKU:
    09-080100184
    Diameter Options:
    4 Inch
    Length Options:
    48 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $87.99
    Qty in Cart: 0
    Price:
    $87.99
    Subtotal:
  • BESTfit 4 Inch OD-ID X 24 Inch 16 Gauge Aluminized Steel Tube

    BESTfit 4 Inch OD-ID X 24 Inch 16 Gauge Aluminized Steel Tube

    BESTFIT TRUCK PARTS

    $51.99
    BESTfit 4 Inch O.D.-I.D. X 24 Inch 16 Gauge Aluminized Steel TubeFor those in pursuit of an exhaust system modification, the BESTfit 4 Inch O.D.-I.D. X 24 Inch 16 Gauge Aluminized Steel Tube is the...
    09-080100183
    SKU:
    09-080100183
    Diameter Options:
    4 Inch
    Length Options:
    24 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 4 OD X 3-1/2 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 4 OD X 3-1/2 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $26.71
    BESTfit 4 To 3.5 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer PipeTransform your exhaust's appearance with the BESTfit 4 to 3.5 Inch OD-OD Aluminized Steel Reducer Pipe. Offering a precise...
    09-080100156
    SKU:
    09-080100156
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $26.71
    Qty in Cart: 0
    Price:
    $26.71
    Subtotal:
  • BESTfit Aluminized Exhaust Reducer 4 OD X 3-1/2 ID X 8 Inch

    BESTfit Aluminized Exhaust Reducer 4 OD X 3-1/2 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $24.93
    BESTfit 4 To 3.5 Inch OD-ID X 8 Inch OAL Aluminized Steel Reducer PipeUpgrade your exhaust system with our Aluminized Exhaust Reducer, designed to transition from a 4-inch OD to a 3.5-inch ID over an...
    09-080100155
    SKU:
    09-080100155
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $24.93
    Qty in Cart: 0
    Price:
    $24.93
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3-1/2 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3-1/2 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $30.75
    BESTfit 4 To 3.5 Inch ID-OD X 8 Inch OAL Aluminized Steel Reducer PipeIntroducing the BESTfit Aluminized Exhaust Reducer, expertly designed to connect a 4-inch ID to a 3.5-inch OD over an 8-inch...
    09-080100153
    SKU:
    09-080100153
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $30.75
    Qty in Cart: 0
    Price:
    $30.75
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3-1/2 ID X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3-1/2 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $32.89
    BESTfit 4 To 3.5 Inch ID-ID X 8 Inch OAL Aluminized Steel Reducer PipeAchieve a great fit for your exhaust with the BESTfit 4 to 3.5 Inch ID-ID Aluminized Steel Reducer Pipe. This 8-inch-long reducer...
    09-080100152
    SKU:
    09-080100152
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $32.89
    Qty in Cart: 0
    Price:
    $32.89
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 3-1/2 OD X 3 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 3-1/2 OD X 3 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $28.64
    BESTfit 3.5 To 3 Inch OD-OD X 8 Inch OAL Aluminized Steel Reducer PipeElevate your exhaust system with the BESTfit Aluminized Exhaust Reducer, designed to transition between 3.5 Inch and 3 Inch...
    09-080100151
    SKU:
    09-080100151
    Diameter Options:
    3 1/2 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $28.64
    Qty in Cart: 0
    Price:
    $28.64
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 3-1/2 OD X 3 ID X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 3-1/2 OD X 3 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $30.24
    BESTfit 3.5 To 3 Inch O.D.-ID X 8 Inch OAL Aluminized Steel Reducer PipeFor an exhaust system upgrade, look no further than the BESTfit Aluminized Exhaust Reducer from 4 State Trucks. Transitioning...
    09-080100150
    SKU:
    09-080100150
    Diameter Options:
    3 1/2 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $30.24
    Qty in Cart: 0
    Price:
    $30.24
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 3-1/2 ID X 3 ID X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 3-1/2 ID X 3 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $28.64
    BESTfit 3.5 To 3 Inch ID-ID X 8 Inch OAL Aluminized Steel Reducer PipeUpgrade your exhaust system's efficiency with the BESTfit Aluminized Exhaust Reducer, designed to transition from 3-1/2" ID to 3"...
    09-080100149
    SKU:
    09-080100149
    Diameter Options:
    3 1/2 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $28.64
    Qty in Cart: 0
    Price:
    $28.64
    Subtotal:
  • FREE SHIPPING OVER $249
    Poly Upper Exhaust Bushing Replaces M13-6001 For Peterbilt 388, 389 & 386

    Poly Upper Exhaust Bushing Replaces M13-6001 For Peterbilt 388, 389 & 386

    AFTERMARKET

    $3.81
    Poly Upper Exhaust Bushing Fits Peterbilt 388, 389 & 386The Poly Upper Exhaust Bushing is a durable replacement part designed to fit Peterbilt 388, 389, and 386 models. Engineered to replace the OEM...
    01-080709
    SKU:
    01-080709
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Peterbilt
    Product Type:
    Exhaust
    Diameter Options:
    1 3/4 Inch
    Height Options:
    3/4 Inch
    Ready To Ship:
    Yes
    $3.81
    Qty in Cart: 0
    Price:
    $3.81
    Subtotal:
  • FREE SHIPPING OVER $249
    5 Inch OD Multi-Bend Turbo Exhaust Down Pipe - Short For Peterbilt 389, 388, 386 With Detroit / CAT Engine

    5 Inch OD Multi-Bend Turbo Exhaust Down Pipe - Short For Peterbilt 389, 388, 386 With Detroit / CAT Engine

    LINCOLN CHROME

    $237.99
    Turbo Multi-Bend Down PipeUpgrade your Peterbilt 389, 388, or 386 with the Turbo Down Pipe! Specifically designed for trucks with Detroit or CAT motors, this short down pipe is built for enhanced...
    01-0801008
    SKU:
    01-0801008
    Truck Class:
    Heavy Duty
    Diameter Options:
    5 Inch
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Location:
    Made In USA
    Product Type:
    Exhaust
    Style Options:
    Caterpillar
    Ready To Ship:
    Yes
    $237.99
    Qty in Cart: 0
    Price:
    $237.99
    Subtotal:
  • FREE SHIPPING OVER $249
    LC Turbo Down Pipe W/ 5 Inch Flanged Inlet & 5 Inch OD Outlet For Peterbilt 386, 388 & 389/Glider W/ 3406E Caterpillar Engine

    LC Turbo Down Pipe W/ 5 Inch Flanged Inlet & 5 Inch OD Outlet For Peterbilt 386, 388 & 389/Glider W/ 3406E Caterpillar Engine

    LINCOLN CHROME

    $200.99
    Turbo Down Pipe W/ 5 Inch Flanged Inlet & 5 Inch OD Outlet By Lincoln Chrome Fits Peterbilt 386, 388 & 389/Glider W/ 3406E Caterpillar EngineThis turbo down pipe is a perfect fit for Peterbilt 389,...
    01-0801007
    SKU:
    01-0801007
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Location:
    Made In USA
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    Style Options:
    Elbow Multi-Bend
    $200.99
    Qty in Cart: 0
    Price:
    $200.99
    Subtotal:
  • Aluminized Turbo Down Pipe, 4 Inch OD, For Peterbilt 386

    Aluminized Turbo Down Pipe, 4 Inch OD, For Peterbilt 386

    AFTERMARKET

    $186.99
    23 Inch Long Turbo Down Pipe W/ 4 Inch OD & 3.85 Inch IDThe Aluminized Turbo Down Pipe is a high-quality replacement designed for Peterbilt 386 trucks. Constructed from durable aluminized steel, this...
    01-080100007
    SKU:
    01-080100007
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Peterbilt
    Diameter Options:
    4 Inch
    Product Type:
    Exhaust
    $186.99
    Qty in Cart: 0
    Price:
    $186.99
    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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