null

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
  • BESTfit 3 OD X 14 Inch Chrome-Plated Steel 90 Degree Elbow

    BESTfit 3 OD X 14 Inch Chrome-Plated Steel 90 Degree Elbow

    BESTFIT TRUCK PARTS

    $141.99
    BESTfit 3 Inch O.D.-O.D. X 14 Inch Chrome-Plated Steel 90 Degree Elbow* High Quality Elbow O.D.- O.D.* Chrome-Plated Steel* Dimensions  - 14 Inch Length  - 3 Inch Diameter  - 4 Inch Centerline to...
    09-080000048
    SKU:
    09-080000048
    Diameter Options:
    3 Inch
    Truck Class:
    Universal
    Style Options:
    Elbow
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Length Options:
    14 Inch
    Product Type:
    Exhaust
    $141.99
    Qty in Cart: 0
    Price:
    $141.99
    Subtotal:
  • BESTfit 3.5 ID/OD X 12 Inch Chrome-Plated Steel 90 Degree Elbow

    BESTfit 3.5 ID/OD X 12 Inch Chrome-Plated Steel 90 Degree Elbow

    BESTFIT TRUCK PARTS

    $238.99
    BESTfit 3.5 Inch I.D.-O.D. X 12 Inch Chrome-Plated Steel 90 Degree Elbow* High Quality Elbow I.D.- O.D.* Chrome-Plated Steel* Dimensions  - 12 Inch Length  - 3.5 Inch Diameter  - 5 Inch Centerline to...
    09-080000045
    SKU:
    09-080000045
    Truck Class:
    Universal
    Diameter Options:
    3 1/2 Inch
    Style Options:
    Elbow
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    $238.99
    Qty in Cart: 0
    Price:
    $238.99
    Subtotal:
  • BESTfit 3.5 OD X 8 Inch Aluminized Steel 60 Degree Elbow

    BESTfit 3.5 OD X 8 Inch Aluminized Steel 60 Degree Elbow

    BESTFIT TRUCK PARTS

    $46.34
    BESTfit 3.5 Inch O.D.-O.D. X 8 Inch Aluminized Steel 60 Degree Elbow* High Quality Elbow O.D.- O.D.* Chrome-Plated Steel* Dimensions  - 8 Inch Length  - 3.5 Inch Diameter  - 5 Inch Centerline to...
    09-080000040
    SKU:
    09-080000040
    Truck Class:
    Universal
    Diameter Options:
    3 1/2 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Degree Options:
    60
    Make:
    Universal Items
    Length Options:
    8 Inch
    Product Type:
    Exhaust
    $46.34
    Qty in Cart: 0
    Price:
    $46.34
    Subtotal:
  • BESTfit 3 ID/OD X 8 Inch Aluminized Steel 60 Degree Elbow

    BESTfit 3 ID/OD X 8 Inch Aluminized Steel 60 Degree Elbow

    BESTFIT TRUCK PARTS

    $86.99
    BESTfit 3 Inch I.D.-O.D. X 8 Inch Aluminized Steel 60 Degree Elbow* High Quality Elbow I.D.- O.D.* Aluminized Steel* Dimensions  - 8 Inch Length  - 3 Inch Diameter  - 3.5 Inch Centerline to Radius  ...
    09-080000038
    SKU:
    09-080000038
    Truck Class:
    Universal
    Diameter Options:
    3 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Degree Options:
    60
    Product Type:
    Exhaust
    $86.99
    Qty in Cart: 0
    Price:
    $86.99
    Subtotal:
  • BESTfit 7 Inch Diameter X 11.5 Inch Aluminized Steel 90 Degree Tangent Cut Elbow

    BESTfit 7 Inch Diameter X 11.5 Inch Aluminized Steel 90 Degree Tangent Cut Elbow

    BESTFIT TRUCK PARTS

    $317.99
    BESTfit 7 Inch Diameter X 11.5 Inch Aluminized Steel 90 Degree Tangent Cut Elbow* High Quality Elbow* Aluminized Steel* Dimensions  - 11.5 Inch Length Each Leg  - 7 Inch OD/OD  - 8 Inch Centerline to...
    09-080000035
    SKU:
    09-080000035
    Truck Class:
    Universal
    Diameter Options:
    7 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Length Options:
    11 Inch
    Product Type:
    Exhaust
    $317.99
    Qty in Cart: 0
    Price:
    $317.99
    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:
  • Peterbilt 377, 378, 379, 386 5 Inch OD Aluminized 3 Bend Exhaust Y-Pipe 14-15353-0150 by BESTfit

    Peterbilt 377, 378, 379, 386 5 Inch OD Aluminized 3 Bend Exhaust Y-Pipe 14-15353-0150 by BESTfit

    BESTFIT TRUCK PARTS

    $199.99
    BESTfit Aluminized Steel Exhaust Y-PipeUpgrade your Peterbilt 377, 378, 379, or 386's exhaust with the BESTfit 5 Inch Aluminized Y-Pipe Exhaust. Crafted from high-quality aluminized steel for...
    01-0806001
    SKU:
    01-0806001
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Make:
    Peterbilt
    Style Options:
    Y-Pipe
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $199.99
    Qty in Cart: 0
    Price:
    $199.99
    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:
  • 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.


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!