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Peterbilt 379 Parts

At 4 State Trucks, you’ll find everything you need to keep your iconic 379 model running strong and looking sharp. From bumpers and exhausts to fuel tanks, fenders, and chrome trim, we’ve got Peterbilt accessories and parts designed to fit your specific model year (87’ – 07’). Whether it’s a full-body restoration, a small component replacement, or a custom upgrade, our lineup has what you need.

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  • FREE SHIPPING OVER $219
    Turnpike Truck Trim 12 Inch Stainless Steel Grab Handle For Peterbilt

    Turnpike Truck Trim 12 Inch Stainless Steel Grab Handle For Peterbilt

    TURNPIKE TRUCK TRIM

    $30.59
    12 Inch Polished Grab Handle By Turnpike Truck Trim Fits PeterbiltEquip your Peterbilt truck with the Turnpike Truck Trim 12 Inch Stainless Steel Grab Handle, engineered for long-lasting performance...
    01-092012
    SKU:
    01-092012
    Length Options:
    12 Inch
    Finish Options:
    Polished
    Material Options:
    Stainless Steel
    Product Type:
    Exterior
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $30.59
    Qty in Cart: 0
    Price:
    $30.59
    Subtotal:
  • Jones Performance Driver Side Picket American Classic Front Fender For Peterbilt 379

    Jones Performance Driver Side Picket American Classic Front Fender For Peterbilt 379

    JONES PERFORMANCE

    $598.50
    94 Inch Picket American Classic Front Fender- Driver Side By Jones Performance Fits Peterbilt 379Add a touch of classic style to your Peterbilt 379 with the Jones Performance Driver Side Picket...
    01-127000109
    SKU:
    01-127000109
    Height Options:
    13 1/2 Inch
    Product Type:
    Hood Parts & Acc.
    Position:
    Driver Side
    Length Options:
    94 Inch
    Material Options:
    Fiberglass
    Make:
    Peterbilt
    $598.50
    Qty in Cart: 0
    Price:
    $598.50
    Subtotal:
  • FREE SHIPPING OVER $219
    BESTfit Stainless Steel Upper Mirror Bracket For Peterbilt 300 Series W/ Cab Mounted Mirrors 2005 & Newer

    BESTfit Stainless Steel Upper Mirror Bracket For Peterbilt 300 Series W/ Cab Mounted Mirrors 2005 & Newer

    BESTFIT TRUCK PARTS

    $40.79
    Upper Mirror Bracket By BESTfit Replaces R11-6044, R11-6044R Fits Peterbilt W/ Cab Mounted MirrorsSecure your Peterbilt's cab-mounted mirrors with the BESTfit Stainless Steel Outer Mirror Bracket,...
    01-0915022
    SKU:
    01-0915022
    Material Options:
    Stainless Steel
    Product Type:
    Exterior
    Type Options:
    Cab Mount
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $40.79
    Qty in Cart: 0
    Price:
    $40.79
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Stainless Steel Outer Mirror Bracket For Peterbilt W/ Cab Mounted Mirrors

    BESTfit Stainless Steel Outer Mirror Bracket For Peterbilt W/ Cab Mounted Mirrors

    BESTFIT TRUCK PARTS

    $101.99
    Outer Mirror Bracket By BESTfit Fits Peterbilt 2004 & OlderReplace your old mirror brackets with the BESTfit Stainless Steel Outer Mirror Bracket for Peterbilt, built for trucks with door-mounted...
    01-0915021
    SKU:
    01-0915021
    Material Options:
    Stainless Steel
    Type Options:
    Door Mount
    Product Type:
    Exterior
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $101.99
    Qty in Cart: 0
    Price:
    $101.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Rubber Exhaust Bushing Set For Peterbilt

    Rubber Exhaust Bushing Set For Peterbilt

    AFTERMARKET

    $38.75
    Set of 4 Exhaust Bushing Fits PeterbiltEnsure secure and vibration-free exhaust system mounting with the Rubber Exhaust Bushing Set for Peterbilt. This high-quality set includes four male and four...
    01-08040008
    SKU:
    01-08040008
    Height Options:
    1 1/2 Inch
    Length Options:
    1 1/2 Inch
    Color:
    Black
    Product Type:
    Exhaust
    Material Options:
    Rubber
    Make:
    Peterbilt
    $38.75
    Qty in Cart: 0
    Price:
    $38.75
    Subtotal:
  • FREE SHIPPING OVER $249
    Chrome Window Switch Trim For Peterbilt

    Chrome Window Switch Trim For Peterbilt

    UNITED PACIFIC

    $10.62 - $13.19
    Choose Option(s) to see description.Fitment* Fits Peterbilt 335 2006 thru 2010* Fits Peterbilt 378 2006 thru 2007* Fits Peterbilt 379 2006 thru 2007* Fits Peterbilt 384 2007 thru 2016* Fits Peterbilt...
    PPR_300401
    SKU:
    PPR_300401
    Truck Class:
    Heavy Duty
    Finish Options:
    Chrome-Plated
    Product Type:
    Interior
    Make:
    Peterbilt
    Position:
    Passenger Side
    Material Options:
    Plastic/Poly
    Ready To Ship:
    Yes
    $10.62 - $13.19
    Qty in Cart: 0
    Price:
    $10.62 - $13.19
    Subtotal:
  • BESTfit Stainless Steel Lower Coolant Tube Replaces F66-6251 For Peterbilt 357, 359, 377, 378 & 379

    BESTfit Stainless Steel Lower Coolant Tube Replaces F66-6251 For Peterbilt 357, 359, 377, 378 & 379

    BESTFIT TRUCK PARTS

    $574.99
    Lower Coolant Tube By BESTfitReplace your Peterbilt truck's lower coolant tube with the BESTfit Stainless Steel Lower Coolant Tube, engineered for 357, 359, 377, 378, and 379 models. This multibend...
    RP-75PC6251
    SKU:
    RP-75PC6251
    Position:
    Lower
    Material Options:
    Stainless Steel
    Product Type:
    Engine Parts
    Make:
    Peterbilt
    $574.99
    Qty in Cart: 0
    Price:
    $574.99
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  • Battery Jumper Cable - Group 31, 2/0 W/ 3/8-Inch Lugs

    Battery Jumper Cable - Group 31, 2/0 W/ 3/8-Inch Lugs

    AFTERMARKET

    $17.11 - $22.78
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks17 Inch Red Battery Jumper Cable Replaces 84-969517 Inch 2 Gauge Red Battery Jumper Cable W/ 3/8 Inch...
    PPR_300359
    SKU:
    PPR_300359
    Color:
    Black
    Length Options:
    8 1/2 Inch
    Product Type:
    Engine Parts
    Length Options:
    17 Inch
    Color:
    Red
    Make:
    Universal Items
    $17.11 - $22.78
    Qty in Cart: 0
    Price:
    $17.11 - $22.78
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  • BESTfit 25-Foot Roll Heavy Duty Galvanized Metal Hose

    BESTfit 25-Foot Roll Heavy Duty Galvanized Metal Hose

    BESTFIT TRUCK PARTS

    $293.99 - $383.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksBESTfit 4 Inch X 25 Ft Galvanized Steel Flex Hose4 Inch X 25 Ft Galvanized Flex Hose By BESTfit* High...
    PPR_300295
    SKU:
    PPR_300295
    Product Type:
    Exhaust
    Diameter Options:
    4 Inch
    Diameter Options:
    5 Inch
    Material Options:
    Steel
    Length Options:
    300 Inch
    Finish Options:
    Galvanized
    Style Options:
    Standard
    Style Options:
    Heavy Duty
    Make:
    Universal Items
    $293.99 - $383.99
    Qty in Cart: 0
    Price:
    $293.99 - $383.99
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  • BESTfit 2.5 Inch 304 Stainless Steel V- Band Clamp

    BESTfit 2.5 Inch 304 Stainless Steel V- Band Clamp

    BESTFIT TRUCK PARTS

    $30.99
    2.5 Inch Stainless Steel V- Band Clamp By BESTfitEnsure leak-free, heavy-duty connections with the BESTfit 2.5 Inch 304 Stainless Steel V-Band Clamp. Its precision 2.5-inch diameter and robust 304...
    GR-VB-300C
    SKU:
    GR-VB-300C
    Product Type:
    Exhaust
    Make:
    Universal Items
    $30.99
    Qty in Cart: 0
    Price:
    $30.99
    Subtotal:
  • BESTfit 7 Inch Zinc Plated Rain Cap

    BESTfit 7 Inch Zinc Plated Rain Cap

    BESTFIT TRUCK PARTS

    $173.03
    7 Inch Rain Cap By BESTfitPrevent water and debris from entering your exhaust with the BESTfit 7 Inch Zinc Plated Rain Cap. Made for 7-inch straight stack openings, this zinc-plated steel cap offers...
    GR-RC-700
    SKU:
    GR-RC-700
    Product Type:
    Exhaust
    Make:
    Universal Items
    $173.03
    Qty in Cart: 0
    Price:
    $173.03
    Subtotal:
  • BESTfit 7-5.5 Inch 90 Degree Rubber Reducer Elbow

    BESTfit 7-5.5 Inch 90 Degree Rubber Reducer Elbow

    BESTFIT TRUCK PARTS

    $87.99
    7-5.5 Inch 90 Degree Rubber Reducer Elbow By BESTfitKeep your air intake system performing at peak efficiency with the BESTfit 7-5.5 Inch 90 Degree Rubber Reducer Elbow, engineered for a smooth...
    GR-RRE-790-55
    SKU:
    GR-RRE-790-55
    Degree Options:
    90
    Product Type:
    Exhaust
    Material Options:
    Rubber
    Diameter Options:
    7 Inch
    Make:
    Universal Items
    $87.99
    Qty in Cart: 0
    Price:
    $87.99
    Subtotal:
  • BESTfit 4 Inch Aluminized Steel Butt Joint Clamp

    BESTfit 4 Inch Aluminized Steel Butt Joint Clamp

    BESTFIT TRUCK PARTS

    $15.85
    4 Inch Aluminized Butt Joint Clamp By BESTfitReplace worn clamps with the BESTfit 4 Inch Aluminized Steel Butt Joint Clamp. Engineered from premium aluminized steel and designed for butt joint...
    GR-PF-4ABT
    SKU:
    GR-PF-4ABT
    Product Type:
    Exhaust
    Make:
    Universal Items
    $15.85
    Qty in Cart: 0
    Price:
    $15.85
    Subtotal:
  • BESTfit 6-5 Inch ID Rubber Reducer Hose

    BESTfit 6-5 Inch ID Rubber Reducer Hose

    BESTFIT TRUCK PARTS

    $37.99
    6-5 Inch ID Rubber Reducer Hose By BESTfitReplace worn or damaged intake connections with the BESTfit 6-5 Inch ID Rubber Reducer Hose, built for heavy-duty trucks. This high-quality 6-inch rubber...
    GR-RHH-6-5
    SKU:
    GR-RHH-6-5
    Product Type:
    Exhaust
    Material Options:
    Rubber
    Diameter Options:
    6 To 5 Inch
    Make:
    Universal Items
    $37.99
    Qty in Cart: 0
    Price:
    $37.99
    Subtotal:
  • BESTfit 7-6 Inch 90 Degree Rubber Reducer Elbow

    BESTfit 7-6 Inch 90 Degree Rubber Reducer Elbow

    BESTFIT TRUCK PARTS

    $129.99
    7-6 Inch 90 Degree Rubber Reducer Elbow By BESTfitAchieve secure, leak-free connections in your heavy-duty truck's intake system with the BESTfit 7-6 Inch 90 Degree Rubber Reducer Elbow. Designed to...
    GR-RRE-790-6
    SKU:
    GR-RRE-790-6
    Degree Options:
    90
    Product Type:
    Exhaust
    Style Options:
    Elbow
    Material Options:
    Rubber
    Diameter Options:
    7 Inch
    Make:
    Universal Items
    $129.99
    Qty in Cart: 0
    Price:
    $129.99
    Subtotal:
  • BESTfit 5-6 Inch Exhaust Pipe Hook

    BESTfit 5-6 Inch Exhaust Pipe Hook

    BESTFIT TRUCK PARTS

    $9.26
    5-6 Inch Exhaust Pipe Hook By BESTfitSimplify exhaust pipe installation with the BESTfit 5-6 Inch Exhaust Pipe Hook, built to support 5- to 6-inch pipes. This high-quality hook provides stable...
    GR-PH-6A
    SKU:
    GR-PH-6A
    Product Type:
    Exhaust
    Make:
    Universal Items
    $9.26
    Qty in Cart: 0
    Price:
    $9.26
    Subtotal:
  • BESTfit 48 Inch Aluminized Steel Heat Shield W/ Round Holes

    BESTfit 48 Inch Aluminized Steel Heat Shield W/ Round Holes

    BESTFIT TRUCK PARTS

    $179.99
    48 Inch Aluminized 180 Degree Heat Shield W/ Round Holes By BESTfitSafeguard surrounding components from high exhaust temperatures with the BESTfit 48 Inch Aluminized Steel Heat Shield. The...
    GR-PG-G
    SKU:
    GR-PG-G
    Material Options:
    Aluminum
    Length Options:
    48 Inch
    Degree Options:
    180
    Product Type:
    Exhaust
    Make:
    Universal Items
    $179.99
    Qty in Cart: 0
    Price:
    $179.99
    Subtotal:
  • BESTfit 3.5 Inch Guillotine Single Edge Saddle Clamp

    BESTfit 3.5 Inch Guillotine Single Edge Saddle Clamp

    BESTFIT TRUCK PARTS

    $6.89
    3.5 Inch Zinc Plated Guillotine Single Edge Saddle Clamp By BESTfitThe BESTfit 3.5 Inch Guillotine Single Edge Saddle Clamp ensures tight, reliable exhaust connections for commercial trucks. Its...
    GR-RB-35ZN
    SKU:
    GR-RB-35ZN
    Product Type:
    Exhaust
    Make:
    Universal Items
    $6.89
    Qty in Cart: 0
    Price:
    $6.89
    Subtotal:
  • BESTfit 10 X 15 Inch Aluminized Steel Oval Muffler Hanger

    BESTfit 10 X 15 Inch Aluminized Steel Oval Muffler Hanger

    BESTFIT TRUCK PARTS

    $72.09
    10 X 15 Inch Oval Muffler Hanger By BESTfitSecure your truck's exhaust system with the BESTfit 10 x 15 Inch Oval Muffler Hanger. Crafted from durable aluminized steel and designed for horizontal...
    GR-OMH-1015
    SKU:
    GR-OMH-1015
    Product Type:
    Exhaust
    Make:
    Universal Items
    $72.09
    Qty in Cart: 0
    Price:
    $72.09
    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:
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Adding your products to cart

Shop for Repair & Performance Parts for the Peterbilt 379

We stock aftermarket parts from top-tier brands, each engineered to meet or exceed classic OEM Peterbilt 379 parts for both newer and older 379 model years. Replacement parts reduce downtime and can enhance the efficiency of your big rig. Easily swap out worn-out or broken mechanical components: - Turbochargers and exhaust manifolds. - Radiators, heater hoses, and electrical components. -Peterbilt 379 front shocks, air-ride suspension hardware and drivetrain or powertrain replacements. Installing high-quality aftermarket performance upgrades can lead to a positive ROI and stronger performance. Whether your Peterbilt needs an exhaust system upgrade or an extensive suspension rebuild, we've got the parts to get the job done.

Add Polished Chrome Upgrades

Elevate your truck's look with exterior chrome parts: stainless steel visors, grilles, rear fenders, and front bumpers for Peterbilt 379. Add larger Peterbilt diesel fuel storage tanks and a new set of Peterbilt 379 chrome stack tops.

Customize the Interior with Peterbilt 379 Accessories

Our Peterbilt 379 interior accessories let you mix and match designs to fit your truck's theme. For decades, we've helped source parts for drivers to build their custom show trucks. Customizing the interior? If you can dream it, there's likely a product to help you build it. Browse through dash trims, upholstery, dual-tone interior cab lights, vent trim covers, custom foot pedals, and more. Interior accessories help to customize the entirety of your rig. You can add unique rear sleeper window shapes, chrome-polished mirror accessories, cabin doors, and in-cab vinyl flooring kits. When it comes to fine-tuning your custom interior, there are endless options. Filter through a vast selection of products via the materials, design features, sizes, and aftermarket brands that truckers trust. At the bottom of the page, you can review the item details, check for product specs, search for limited-time discounts on popular items, and add the order to cart. Easy.

Frequently Asked Questions About Peterbilt 379 Parts

What years are Peterbilt 379 parts compatible with, and will they fit my specific model?

Most Peterbilt 379 parts fit 1987–2007 trucks, but fitment depends on the exact part and your setup (standard vs extended hood, trim packages, modifications). Always confirm OEM specs and model details before ordering. For custom builds, contact support with your truck info.

What's the difference between aftermarket and OEM Peterbilt 379 parts in terms of quality and durability?

OEM parts match factory specs and usually cost more. Quality aftermarket parts can perform similarly for 30–50% less, especially for chrome and accessories. Look for strong materials (ex: 16-gauge+ bumpers), good plating/finishing, and a warranty—avoid ultra-cheap parts that rust or peel quickly.

How difficult is it to install Peterbilt 379 bumpers and what tools do I need?

Most installs take 2–4 hours with basic tools: socket set (especially 3/4" and 7/8"), torque wrench, jack stands/lift, and ideally a helper. Many bumpers use factory mounts; some may need minor drilling. Rusted hardware and alignment are the usual challenges. Pro install is often $200–$400.

What chrome and finish options are available for Peterbilt 379 parts, and how do they hold up?

Triple chrome: best shine, needs regular upkeep (especially in winter). Powder coat: tough and chip-resistant, less mirror-like. Polished stainless: higher upfront cost, won’t rust, low maintenance. Choose based on climate and how much maintenance you want to do.

Which Peterbilt 379 parts should I prioritize replacing for both appearance and functionality?

Start with safety items (headlights/marker lights). Next, replace rust-prone parts like bumpers, battery boxes, and step plates. Then move to high-impact upgrades like air cleaners and exhaust. Interior items (dash panels, handles) improve daily comfort. Prices can vary. Budget $2,000-5,000 for a comprehensive exterior refresh, or tackle projects individually starting with the most visible or damaged components.


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