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Peterbilt 389 Exhaust Parts

Find top-notch Peterbilt 389 exhaust components to elevate your rig's performance. We offer reliable Peterbilt mufflers, chrome stacks, elbows, clamps, brackets, and DPFs for a flawless fit. Shop our extensive inventory at 4 State Trucks for quality parts that deliver durability and style.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Aluminized Steel Exhaust Turbo Flange, 3.5 Inch ID x 2 Inch

    Aluminized Steel Exhaust Turbo Flange, 3.5 Inch ID x 2 Inch

    BESTFIT TRUCK PARTS

    $60.99
    Steel 3.5 Inch ID Turbo Flange Adapter* High Quality Turbo Flange* Aluminized Steel* 3.5 Inch ID * 2 Inch Length* Sold Individually* Warranty On Turbo Flanges Against Defects In Workmanship &...
    09-0801009
    SKU:
    09-0801009
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Material Options:
    Aluminized Steel
    $60.99
    Qty in Cart: 0
    Price:
    $60.99
    Subtotal:
  • 4 OD 10 x 10 Inch Chrome 90 Degree Elbow

    4 OD 10 x 10 Inch Chrome 90 Degree Elbow

    BESTFIT TRUCK PARTS

    $165.99
    4 Inch OD x 10 x 10 Inch Chrome 90 Degree Elbow* High Quality Elbow* Chrome-Plated * 4 Inch OD/OD * 90 Degree* Both Legs 10 Inches Length * Sold Individually* Warranty On Elbows Against Defects In...
    09-0801419
    SKU:
    09-0801419
    Diameter Options:
    4 Inch
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $165.99
    Qty in Cart: 0
    Price:
    $165.99
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  • Chrome 90 Degree Elbow, 6 Inch OD - 24 x 24 Inch Legs

    Chrome 90 Degree Elbow, 6 Inch OD - 24 x 24 Inch Legs

    BESTFIT TRUCK PARTS

    $375.99
    6 Inch OD x 24 x 24 Inch Chrome 90 Degree Elbow* High Quality Elbow* Chrome-Plated * 6 Inch OD/OD* 90 Degree * Legs Are 24 Inches On Each Side* 16 Gauge* Sold Individually* Warranty On Elbows Against...
    09-0801623
    SKU:
    09-0801623
    Finish Options:
    Chrome-Plated
    Degree Options:
    90
    Style Options:
    Elbow
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    $375.99
    Qty in Cart: 0
    Price:
    $375.99
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  • 5 Inch SS Pre-Formed Exhaust Band Clamp

    5 Inch SS Pre-Formed Exhaust Band Clamp

    BESTFIT TRUCK PARTS

    $19.99
    5 Inch Easy Seal Exhaust Band Clamp* High Quality Exhaust Band Clamp* Made Of 304 Stainless Steel* Pre-form* Creates Leak Proof Seal * 5 Inch Diameter* Sold Individually* Warranty On Exhaust Band...
    09-0800040
    SKU:
    09-0800040
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Diameter Options:
    5 Inch
    Ready To Ship:
    Yes
    $19.99
    Qty in Cart: 0
    Price:
    $19.99
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  • 12 Gauge Custom 1 Piece Stainless Steel DPF Cover For Peterbilt 389/Glider

    12 Gauge Custom 1 Piece Stainless Steel DPF Cover For Peterbilt 389/Glider

    TWELVE GAUGE

    $944.99
    Stainless Steel DPF Cover 1 Piece By 12 Gauge Customs Fits Peterbilt 389/GliderProtect and enhance your Peterbilt 389 or 389 Glider with this high-quality 16 gauge stainless steel full DPF cover...
    01-0502500
    SKU:
    01-0502500
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Product Type:
    Exhaust
    $944.99
    Qty in Cart: 0
    Price:
    $944.99
    Subtotal:
  • 7 Inch Heat Shield Clamp

    7 Inch Heat Shield Clamp

    BESTFIT TRUCK PARTS

    $19.68
    7 Inch Heat Shield ClampMount a 180 degree heat shield on a 7 inch diameter exhaust or muffler pipe with this quality clamp.* High Quality Heat Shield Clamp* 7 Inch Diameter* For 180 Degree Heat...
    09-0808130
    SKU:
    09-0808130
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    $19.68
    Qty in Cart: 0
    Price:
    $19.68
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  • SS 45 Degree Elbow, 8 x 10 Inch

    SS 45 Degree Elbow, 8 x 10 Inch

    BESTFIT TRUCK PARTS

    $93.99
    4 Inch OD Stainless Steel 45 Degree Elbow* High Quality Elbow* Stainless Steel * 4 Inch OD* 8 Inch X 10 Inch* 45 Degree Bend * Sold Individually* Warranty On Elbows Against Defects In Workmanship &...
    09-0801451
    SKU:
    09-0801451
    Diameter Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Style Options:
    Elbow
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $93.99
    Qty in Cart: 0
    Price:
    $93.99
    Subtotal:
  • FREE SHIPPING
    Lincoln Chrome 7 Inch Exhaust Kit W/Long Drop Elbows For Peterbilt 389 2011-2017

    Lincoln Chrome 7 Inch Exhaust Kit W/Long Drop Elbows For Peterbilt 389 2011-2017

    LINCOLN CHROME

    $6,534.99 - $7,040.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 389 2011 thru 2017Lincoln Chrome 7 X 108 Flat Top Exhaust Kit W/Long Drop Elbows For Peterbilt 389 2011-2017Chrome 7 X 108 Inch Flat Top...
    PPR_206446
    SKU:
    PPR_206446
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Location:
    Made In USA
    Product Type:
    Exhaust
    Style Options:
    Curve Turn
    $6,534.99 - $7,040.99
    Qty in Cart: 0
    Price:
    $6,534.99 - $7,040.99
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  • 5 Inch Chrome Exhaust Heat Shield Mounting Bracket

    5 Inch Chrome Exhaust Heat Shield Mounting Bracket

    BESTFIT TRUCK PARTS

    $59.99
    Chrome Plated 5 Inch Exhaust Heat Shield Mounting Bracket* High Quality Heat Shield Mounting Bracket* With 3 Tabs* For 180 Degree Heat Shields* Made Of Chrome Plated Steel* 5 Inch Diameter* Made In...
    09-0808135
    SKU:
    09-0808135
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $59.99
    Qty in Cart: 0
    Price:
    $59.99
    Subtotal:
  • BESTfit SS Heat Guard, 180 Degree

    BESTfit SS Heat Guard, 180 Degree

    BESTFIT TRUCK PARTS

    $196.99
    BESTfit No Hole 180 Degree Stainless Steel Exhaust Shield* High Quality Heat Guard* Made Of 430 Stainless Steel* 180 Degree Wrap Around* Dimensions:  - 48 Inch Overall Height  - 4 Inch - 7 Inch...
    09-0805017
    SKU:
    09-0805017
    Truck Class:
    Universal
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $196.99
    Qty in Cart: 0
    Price:
    $196.99
    Subtotal:
  • 6 Inch Chrome Mounting Clamp For 180 Degree Exhaust Heat Shield

    6 Inch Chrome Mounting Clamp For 180 Degree Exhaust Heat Shield

    AUTOMANN USA

    $73.99
    Chrome Plated 6 Inch ID Exhaust Heat Shield Mounting ClampKeep your exhaust components stable and secure with the 6 Inch Chrome Mounting Clamp for 180 Degree Exhaust Heat Shield, crafted from...
    09-0808128
    SKU:
    09-0808128
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Exhaust
    $73.99
    Qty in Cart: 0
    Price:
    $73.99
    Subtotal:
  • Chrome Exhaust Connector 6 ID Inch X 6 Inch OD

    Chrome Exhaust Connector 6 ID Inch X 6 Inch OD

    UNITED PACIFIC

    $39.05
    6 Inch ID To 6 Inch OD Chrome Exhaust ConnectorConnect a 6-inch inside diameter pipe to a 6-inch outside diameter pipe easily with this chrome plated exhaust connector. 4 State Trucks carries an...
    09-08010035
    SKU:
    09-08010035
    Diameter Options:
    6 Inch
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $39.05
    Qty in Cart: 0
    Price:
    $39.05
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  • FREE SHIPPING OVER $249
    9 Inch Diameter Muffler 5 ID / 5 ID X 26.50 Inch OAL 87Q-500-674

    9 Inch Diameter Muffler 5 ID / 5 ID X 26.50 Inch OAL 87Q-500-674

    AUTOMANN USA

    $183.99
    5 X 26.5 Inch Galvanized Steel Exhaust Muffler With Interior Baffles And No Divider, Straight Through Design.Optimize your truck's exhaust with the Galvanized 26.5 Inch Exhaust Muffler, featuring a...
    09-080206
    SKU:
    09-080206
    Diameter Options:
    9 Inch
    Finish Options:
    Galvanized
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Exhaust
    Length Options:
    27 Inch
    Ready To Ship:
    Yes
    $183.99
    Qty in Cart: 0
    Price:
    $183.99
    Subtotal:
  • Lincoln Chrome 7 Inch Exhaust Kit W/Long Drop Elbows For Peterbilt 389 2018-2024 W/Cummins Engine

    Lincoln Chrome 7 Inch Exhaust Kit W/Long Drop Elbows For Peterbilt 389 2018-2024 W/Cummins Engine

    LINCOLN CHROME

    $6,534.99 - $7,086.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 389 2018 thru 2024** Only Fits Trucks That Have a Cummins Engine **Lincoln Chrome 7 X 108 Flat Top Exhaust Kit W/Long Drop Elbows For...
    PPR_206314
    SKU:
    PPR_206314
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Location:
    Made In USA
    Product Type:
    Exhaust
    $6,534.99 - $7,086.99
    Qty in Cart: 0
    Price:
    $6,534.99 - $7,086.99
    Subtotal:
  • BESTfit Exhaust Pipe Coupler

    BESTfit Exhaust Pipe Coupler

    BESTFIT TRUCK PARTS

    $25.19 - $84.99
    Choose Option(s) to see description.BESTfit 3 ID X 8 InchAluminized Exhaust CouplerBESTfit 3 Inch ID-ID X 8 Inch OAL Aluminized Steel Coupler* High Quality Coupler* Aluminized Steel* Dimensions  - 8...
    PPR_206325
    SKU:
    PPR_206325
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminized Steel
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    $25.19 - $84.99
    Qty in Cart: 0
    Price:
    $25.19 - $84.99
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  • BESTfit Aluminized Steel Universal Type C Y-Pipe

    BESTfit Aluminized Steel Universal Type C Y-Pipe

    BESTFIT TRUCK PARTS

    $185.99 - $228.99
    Choose Option(s) to see description.BESTfit 4 X 12 X 9.5 Inch Aluminized Steel Universal Type C Y-PipeAluminized Steel Type C Universal Y-Pipe* High Quality Y Pipe* Aluminized Steel* Y Shaped*...
    PPR_206275
    SKU:
    PPR_206275
    Truck Class:
    Universal
    Make:
    Universal Items
    Height Options:
    10 Inch
    Material Options:
    Aluminized Steel
    Diameter Options:
    3 Inch
    Truck Class:
    Heavy Duty
    Length Options:
    10 Inch
    Product Type:
    Exhaust
    $185.99 - $228.99
    Qty in Cart: 0
    Price:
    $185.99 - $228.99
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  • BESTfit Aluminized Steel Type A Exhaust Y-Pipe

    BESTfit Aluminized Steel Type A Exhaust Y-Pipe

    BESTFIT TRUCK PARTS

    $179.99 - $336.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksBESTfit 5” ID-OD X 14 X 25 Inch Aluminized Steel Universal Type A Y-Pipe With Divider PlateBESTfit 5 X...
    PPR_206274
    SKU:
    PPR_206274
    Truck Class:
    Universal
    Make:
    Universal Items
    Length Options:
    14 Inch
    Diameter Options:
    5 Inch
    Length Options:
    11 Inch
    Truck Class:
    Heavy Duty
    Height Options:
    14 Inch
    Height Options:
    11 Inch
    Material Options:
    Aluminized Steel
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $179.99 - $336.99
    Qty in Cart: 0
    Price:
    $179.99 - $336.99
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  • BESTfit Exhaust Pipe Steel Coupler

    BESTfit Exhaust Pipe Steel Coupler

    BESTFIT TRUCK PARTS

    $18.99 - $26.27
    The BESTfit Exhaust Pipe Steel Coupler provides a durable solution for connecting exhaust components with strength and precision. Manufactured from aluminized steel, it's built to resist corrosion...
    PPR_206265
    SKU:
    PPR_206265
    Truck Class:
    Universal
    Make:
    Universal Items
    Diameter Options:
    5 Inch
    Diameter Options:
    3 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Diameter Options:
    4 Inch
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $18.99 - $26.27
    Qty in Cart: 0
    Price:
    $18.99 - $26.27
    Subtotal:
  • 7 To 5 OD Chrome OD Bull Hauler Bottom Exhaust Stack

    7 To 5 OD Chrome OD Bull Hauler Bottom Exhaust Stack

    UNITED PACIFIC

    $420.99 - $701.99
    Choose Option(s) to see description.7 To 5 OD x 36 Inch Chrome Bull Hauler Bottom Exhaust StackChrome 36 Inch Tall Bull Hauler Bottom Exhaust Stack W/ 7 Inch Reduced To 5 Inch OD* High Quality Bottom...
    PPR_205775
    SKU:
    PPR_205775
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Diameter Options:
    7 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $420.99 - $701.99
    Qty in Cart: 0
    Price:
    $420.99 - $701.99
    Subtotal:
  • Chrome Plated Steel 45 Degree Exhaust Expanded Elbow

    Chrome Plated Steel 45 Degree Exhaust Expanded Elbow

    UNITED PACIFIC

    $116.99
    Choose Option(s) to see description.Chrome Plated Steel 45 Degree Exhaust Expanded Elbow, 5 Inch ID To 5 Inch OD5 Inch ID To OD Chrome Exhaust Elbow, 12 x 12 Inch* High Quality Exhaust Expanded...
    PPR_205783
    SKU:
    PPR_205783
    Truck Class:
    Universal
    Material Options:
    Steel
    Degree Options:
    45
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $116.99
    Qty in Cart: 0
    Price:
    $116.99
    Subtotal:
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Peterbilt 389 Exhaust Systems & Chrome Stacks

Repair and restore the entire Peterbilt 389 exhaust system with a comprehensive selection of exhaust pipes, stacks, and hardware. Shop for premier aftermarket exhaust kits from brands like Lincoln Chrome, made to fit Peterbilt 389 model years (2011-2017 and 2018– 2023). Add clamps, Y-pipe hanger brackets, bushing kits, elbows, bellows kits, and more.

Aftermarket Peterbilt 389 Exhaust Upgrades

Find the hardware you need to keep your exhaust system sealed, stable, and functioning at a high level. Avoid costly exhaust installation mistakes by being prepared with the right hardware for a one-and-done DIY-exhaust installation. Metal Flex Pipe: stabilize the exhaust as it moves in tandem the Peterbilt 389 cab ride suspension. Pre-Formed Stainless Band Clamps: To create a leak-free seal without crushing the tubing. Polyurethane or Heavy-Duty Rubber Exhaust Bushings: To isolate engine vibration and prevent rattling. High-Temp Gaskets: Essential at every flange and manifold connection to stop minor exhaust leaks before they erode clamps or trigger backpressure sensors.

Replacement DPFs, Mufflers & Emissions Components

Reduce backpressure, promote stronger engine performance, and lower EGTs with our in-stock selection of high-flow semi truck mufflers, DPF/DOC 1-box assemblies, and other heavy-duty emissions system parts.

How to Choose the Right Exhaust Setup for Your 389

For newer 389 models, chrome stack kits require a DPF shift kit or specialized long-drop elbows to properly reroute exhaust from the factory-style under-step emissions canister. Verify if the Peterbilt 389 chrome exhaust kit is made for EPA10, GHG14, or newer emissions architecture. Choose a stack diameter and sound profile. The smaller exhaust diameter creates a lighter popping sound while the wider stacks have a deeper, rumbling tone.
  • 5-Inch Stacks (The Practical Standard): Provides a clean, factory-balanced look and modest exhaust flow improvement without overwhelming cab acoustics.
  • 6-Inch to 7-Inch Stacks (The Owner-Operator Sweet Spot): Delivers a deeper, more resonant tone and a bolder visual presence. This is the most popular range for custom highway trucks.
  • 8-Inch to 10-Inch Stacks (The Show Rig Tier): Massive and loud, these require heavy-duty bracket support and reinforced mounting plates to prevent vibration stress cracks on the body. They are ideal for extreme custom builds where aesthetics are paramount.
Choose the right chrome stack top style for your Peterbilt 389 theme:
  • Miter Cut: Angled, sharp, and traditional; the most popular choice for custom 389s.
  • Flat Top: A clean, classic straight-pipe look.
  • Turn-Out / Curved: Directs exhaust gases away from the trailer or sleeper, useful for specific vocational applications.
  • Bullhorn: Flared outward for a distinct, aggressive acoustic resonance.
Choose the right material: Aluminized Steel: The budget-friendly choice (lasting 3–5 years). Best for dry, southern climates or fleets prioritizing lower upfront costs, though prone to surface rust in northern winter salt. Triple Chrome-Plated Steel: The classic custom choice. Delivers a brilliant mirror finish for show trucks, but requires regular polishing and maintenance to prevent chrome pitting from intense heat cycles. 304 Stainless Steel: The longevity champion (7–10+ years). Ideal for long-hauls during winter weather due to its high corrosion resistance and less upkeep requirements.

Frequently Asked Questions About Peterbilt 389 Exhaust Parts

Will these exhaust parts fit my specific year Peterbilt 389, and are there differences between model years?

Most exhaust components are compatible with Peterbilt 389 models from 2008 to present, but there are important variations. Pre-2013 models typically use 5-inch diameter systems, while 2013 and newer models may have different mounting brackets and heat shield configurations. Always verify your truck's build date and check for any fleet-specific modifications. Key differences include the DEF system integration on 2011+ models and changes to the exhaust mounting brackets in 2016+ trucks.

What's the difference between aluminized and stainless steel exhaust components, and which should I choose?

Aluminized steel parts cost 30-40% less and work well for moderate use, lasting 3-5 years in normal conditions. However, they're prone to rust in salt-heavy regions or with frequent washing. 304 stainless steel components resist corrosion better and typically last 7-10 years, making them ideal for coastal areas or heavy-duty applications. 409 stainless offers a middle ground with good durability at a lower price than 304. Consider your operating environment and how long you plan to keep the truck when choosing.

Can I install these exhaust parts myself, and what tools or expertise do I need?

Basic exhaust stack and tip replacements can be DIY projects requiring standard hand tools, jack stands, and about 2-3 hours. However, full system replacements involving the turbo downpipe, flex pipes, or emissions components often require specialty tools like exhaust hangers, torque wrenches, and possibly welding equipment. Common challenges include seized bolts on older trucks, alignment issues with aftermarket parts, and ensuring proper clearances. Professional installation typically runs $200-400 for complex jobs.

What exhaust tip styles and finishes are available, and how do they affect performance?

Popular styles include straight cut, curve cut, turn-down, and miter cut tips, available in chrome, polished stainless, or powder-coated black finishes. While tip style has minimal impact on performance, the exhaust stack diameter and length do matter. 5-inch stacks are standard, with 6-inch options providing a deeper tone but potentially requiring bracket modifications. Chrome requires regular polishing to maintain appearance, while polished stainless needs less maintenance. Black powder-coated options hide soot better but may show wear faster in high-heat applications.

Why are my new exhaust parts not fitting properly, and how can I ensure compatibility?

Fitment issues commonly stem from aftermarket frame modifications, non-standard exhaust routing from previous repairs, or mixing OEM and aftermarket components. Measure your current system's diameter, bracket spacing, and overall length before ordering. Pay special attention to cab-to-sleeper gaps, as extended and custom sleepers may require different stack lengths. Some aftermarket parts may need minor adjustments like drilling new bracket holes or using adapter clamps. When in doubt, provide your OEM to ensure you receive the correct OEM-specification parts.


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