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Peterbilt 387 Parts

Here at 4 State Trucks, we carry the best Peterbilt 387 parts in the industry to deliver you a top quality selection of aftermarket and custom semi truck parts for your Peterbilt 377. When you drive a Pete 387, you'll enjoy the combination of power and strength - and, with help from 4 State Trucks, you can customize your truck to meet your every need. We've got aftermarket and custom bumpers, lights, toolboxes, and all the aftermarket parts you need to customize your Peterbilt 387.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • 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:
  • BESTfit 4 ID X 4.21 OD X 8 Inch Hot Side CAC Hose

    BESTfit 4 ID X 4.21 OD X 8 Inch Hot Side CAC Hose

    BESTFIT TRUCK PARTS

    $90.99
    4 ID X 4.21 OD X 8 Inch Hot Side CAC Hose By BESTfitDeliver dependable airflow in your EGR hot-side system with the BESTfit 4 ID x 4.21 OD x 8 Inch CAC Hose. This high-quality silicone hose provides...
    GR-HCAC-20074
    SKU:
    GR-HCAC-20074
    Length Options:
    6 Inch
    Material Options:
    Silicone
    Color:
    Red
    Diameter Options:
    4 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $90.99
    Qty in Cart: 0
    Price:
    $90.99
    Subtotal:
  • BESTfit 9.5 Inch ID X 10.25 Inch OD DPF Gasket For Cummins ISB 6.7L

    BESTfit 9.5 Inch ID X 10.25 Inch OD DPF Gasket For Cummins ISB 6.7L

    BESTFIT TRUCK PARTS

    $18.59
    9.5 Inch ID X 10.25 Inch OD DPF Gasket By BESTfitMaintain a leak-free DPF system on your Cummins ISB 6.7L with the BESTfit 9.5 Inch ID x 10.25 Inch OD DPF Gasket. Crafted from high-quality materials,...
    GR-GRDPFG-1051-10
    SKU:
    GR-GRDPFG-1051-10
    Product Type:
    Exhaust
    Style Options:
    Cummins
    Make:
    Universal Items
    $18.59
    Qty in Cart: 0
    Price:
    $18.59
    Subtotal:
  • BESTfit 4/4.5 ID X 6.5 Inch CAC Hose

    BESTfit 4/4.5 ID X 6.5 Inch CAC Hose

    BESTFIT TRUCK PARTS

    $113.99
    4/4.5 ID X 6.5 Inch Hot Side CAC Hose By BESTfitEnsure smooth airflow and long-term performance with the BESTfit 4/4.5 ID x 6.5 Inch CAC Hose, designed for EGR hot-side systems. Made of high-quality...
    GR-HCAC-12842
    SKU:
    GR-HCAC-12842
    Color:
    Red
    Product Type:
    Engine Parts
    Diameter Options:
    4 Inch
    Material Options:
    Silicone
    Length Options:
    6 1/2 Inch
    Make:
    Universal Items
    $113.99
    Qty in Cart: 0
    Price:
    $113.99
    Subtotal:
  • BESTfit 10 X 44.5 Inch Aluminized Steel Muffler W/ 5 Inch Inlet/ Outlet

    BESTfit 10 X 44.5 Inch Aluminized Steel Muffler W/ 5 Inch Inlet/ Outlet

    BESTFIT TRUCK PARTS

    $204.99
    10 X 44.5 Inch Muffler W/ 5 Inch Inlet/ Outlet By BESTfitMaintain smooth and quiet exhaust operation with the BESTfit 10 x 44.5 Inch Type 1 Muffler. Constructed from aluminized steel, this round...
    GR-M-130
    SKU:
    GR-M-130
    Product Type:
    Exhaust
    Make:
    Universal Items
    $204.99
    Qty in Cart: 0
    Price:
    $204.99
    Subtotal:
  • BESTfit 2 Inch X 25 Ft Galvanized Steel Flex Hose

    BESTfit 2 Inch X 25 Ft Galvanized Steel Flex Hose

    BESTFIT TRUCK PARTS

    $151.99
    2 Inch X 25 Ft Galvanized Flex Hose By BESTfitKeep your system running smoothly with the BESTfit 2 Inch x 25 Ft Galvanized Steel Flex Hose. This high-quality galvanized metal hose measures 2 inches...
    GR-G15-2300
    SKU:
    GR-G15-2300
    Style Options:
    Standard
    Finish Options:
    Galvanized
    Length Options:
    300 Inch
    Diameter Options:
    2 Inch
    Product Type:
    Exhaust
    Material Options:
    Steel
    Make:
    Universal Items
    $151.99
    Qty in Cart: 0
    Price:
    $151.99
    Subtotal:
  • BESTfit 6 Inch X 10 Ft Galvanized Steel Flex Hose

    BESTfit 6 Inch X 10 Ft Galvanized Steel Flex Hose

    BESTFIT TRUCK PARTS

    $169.99
    6 Inch X 10 Ft Galvanized Flex Hose By BESTfitDepend on the BESTfit 6 Inch x 10 Ft Galvanized Steel Flex Hose for secure, corrosion-resistant connections in heavy-duty applications. Crafted from...
    GR-G15-6120
    SKU:
    GR-G15-6120
    Finish Options:
    Galvanized
    Style Options:
    Standard
    Diameter Options:
    6 Inch
    Length Options:
    120 Inch
    Product Type:
    Exhaust
    Material Options:
    Steel
    Make:
    Universal Items
    $169.99
    Qty in Cart: 0
    Price:
    $169.99
    Subtotal:
  • BESTfit 3.5 ID X 3.71 OD X 6 Inch Hot Side CAC Hose

    BESTfit 3.5 ID X 3.71 OD X 6 Inch Hot Side CAC Hose

    BESTFIT TRUCK PARTS

    $62.99
    3.5 ID X 3.71 OD X 6 Inch Hot Side CAC Hose By BESTfitProtect your engine and maintain smooth EGR operation with the BESTfit 3.5 ID x 3.71 OD x 6 Inch Hot Side CAC Hose. Constructed from durable...
    GR-HCAC-20071
    SKU:
    GR-HCAC-20071
    Material Options:
    Silicone
    Color:
    Red
    Length Options:
    6 Inch
    Product Type:
    Engine Parts
    Diameter Options:
    3 1/2 Inch
    Make:
    Universal Items
    $62.99
    Qty in Cart: 0
    Price:
    $62.99
    Subtotal:
  • BESTfit 3/3.5 ID X 3.21/3.71 OD X 6 Inch CAC Hose

    BESTfit 3/3.5 ID X 3.21/3.71 OD X 6 Inch CAC Hose

    BESTFIT TRUCK PARTS

    $61.99
    3/3.5 ID X 3.21/3.71 OD X 6 Inch Cold CAC Hose By BESTfitThe BESTfit 3/3.5 ID x 3.21/3.71 OD x 6 Inch CAC Hose delivers dependable charge air flow for EGR cold side systems. Made from...
    GR-CCAC-20077
    SKU:
    GR-CCAC-20077
    Material Options:
    Silicone
    Product Type:
    Engine Parts
    Length Options:
    6 Inch
    Make:
    Universal Items
    $61.99
    Qty in Cart: 0
    Price:
    $61.99
    Subtotal:
  • BESTfit 4 X 12 Inch Galvanized Steel Flex Hose

    BESTfit 4 X 12 Inch Galvanized Steel Flex Hose

    BESTFIT TRUCK PARTS

    $19.29
    4 X 12 Inch Galvanized Flex Hose By BESTfitBuilt for durability and dependable operation, the BESTfit 4 x 12 Inch Galvanized Steel Flex Hose provides corrosion-resistant, flexible performance in a...
    GR-G15-412
    SKU:
    GR-G15-412
    Material Options:
    Steel
    Diameter Options:
    4 Inch
    Product Type:
    Exhaust
    Length Options:
    12 Inch
    Finish Options:
    Galvanized
    Style Options:
    Flex
    Make:
    Universal Items
    $19.29
    Qty in Cart: 0
    Price:
    $19.29
    Subtotal:
  • BESTfit 4 ID X 6 Inch Aluminized Steel Coupler

    BESTfit 4 ID X 6 Inch Aluminized Steel Coupler

    BESTFIT TRUCK PARTS

    $26.99
    4 ID X 6 Inch Aluminized Coupler By BESTfitEnsure long-lasting and secure pipe connections with the BESTfit 4 ID x 6 Inch Aluminized Steel Coupler. Constructed from high-quality 16-gauge aluminized...
    GR-CP-46A
    SKU:
    GR-CP-46A
    Product Type:
    Exhaust
    Make:
    Universal Items
    $26.99
    Qty in Cart: 0
    Price:
    $26.99
    Subtotal:
  • BESTfit 24 Inch 304 Stainless Steel Grab Handle

    BESTfit 24 Inch 304 Stainless Steel Grab Handle

    BESTFIT TRUCK PARTS

    $119.99
    24 Inch Stainless Steel Grab Handle By BESTfit1The BESTfit 24 Inch 304 Stainless Steel Grab Handle is a durable, corrosion-resistant solution for safe and convenient truck access. Made from...
    GR-GH-24S
    SKU:
    GR-GH-24S
    Length Options:
    24 Inch
    Product Type:
    Exhaust
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $119.99
    Qty in Cart: 0
    Price:
    $119.99
    Subtotal:
  • BESTfit 3.5 ID X 3.71 OD X 6 Inch CAC Hose

    BESTfit 3.5 ID X 3.71 OD X 6 Inch CAC Hose

    BESTFIT TRUCK PARTS

    $58.99
    3.5 ID X 3.71 OD X 6 Inch Cold CAC Hose By BESTfitAchieve reliable airflow and superior engine protection with the BESTfit 3.5 ID x 3.71 OD x 6 Inch CAC Hose. Engineered for EGR cold side systems,...
    GR-CCAC-20078
    SKU:
    GR-CCAC-20078
    Product Type:
    Engine Parts
    Material Options:
    Silicone
    Length Options:
    6 Inch
    Make:
    Universal Items
    $58.99
    Qty in Cart: 0
    Price:
    $58.99
    Subtotal:
  • BESTfit Plastic Aluminum Radiator W/O Frame 34 X 38.875 X 2 Inch 2 Row For Peterbilt & Kenworth

    BESTfit Plastic Aluminum Radiator W/O Frame 34 X 38.875 X 2 Inch 2 Row For Peterbilt & Kenworth

    BESTFIT TRUCK PARTS

    $877.99
    Radiator W/ 2.5 Inch Inlet & 2.5 Inch Outlet By BESTfitMaintain peak engine performance with the BESTfit 34 x 38.875 x 2 Inch Plastic & Aluminum Radiator, compatible with Peterbilt and Kenworth...
    29-0702123
    SKU:
    29-0702123
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $877.99
    Qty in Cart: 0
    Price:
    $877.99
    Subtotal:
  • CSM Brushed Stainless Steel Trash Can

    CSM Brushed Stainless Steel Trash Can

    CHROME SHOP MAFIA

    $99.00
    Stainless Steel Trash Can By Chrome Shop MafiaOrganize your cab, garage, or workspace with the CSM Brushed Stainless Steel Trash Can by Chrome Shop Mafia. Made of 16-gauge brushed stainless steel...
    09-2200045
    SKU:
    09-2200045
    Location:
    Made In USA
    Product Type:
    Apparel
    Make:
    Universal Items
    $99.00
    Qty in Cart: 0
    Price:
    $99.00
    Subtotal:
  • 8 Inch Black Battery Jumper Cable Replaces 84-9401

    8 Inch Black Battery Jumper Cable Replaces 84-9401

    AFTERMARKET

    $22.71
    8 Inch 1 Gauge Black Battery Jumper CableQuickly and safely jump-start or connect batteries with the 8 Inch Black Battery Jumper Cable. This premium battery-to-battery cable includes a 1-gauge wire...
    09-160300035
    SKU:
    09-160300035
    Color:
    Black
    Product Type:
    Engine Parts
    Length Options:
    8 Inch
    Make:
    Universal Items
    $22.71
    Qty in Cart: 0
    Price:
    $22.71
    Subtotal:
  • 17 Inch Red Battery Jumper Cable Replaces 84-9307, 9-217

    17 Inch Red Battery Jumper Cable Replaces 84-9307, 9-217

    AFTERMARKET

    $29.67
    17 Inch 2 Gauge Red Battery Jumper Cable W/ 3/8 Inch Anti- Rotational LugsOptimize battery performance with the 17 Inch Red Battery Jumper Cable. Made for Group 31 batteries, it includes a 2/0 gauge...
    09-160300046
    SKU:
    09-160300046
    Length Options:
    17 Inch
    Color:
    Red
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $29.67
    Qty in Cart: 0
    Price:
    $29.67
    Subtotal:
  • 17 Inch Black Battery Jumper Cable Replaces 84-9306, 9-218

    17 Inch Black Battery Jumper Cable Replaces 84-9306, 9-218

    AFTERMARKET

    $29.67
    17 Inch 2 Gauge Black Battery Jumper Cable W/ 3/8 Inch Anti- Rotational LugsKeep your batteries connected and your truck powered with the 17 Inch Black Battery Jumper Cable. Designed for Group 31...
    09-160300048
    SKU:
    09-160300048
    Product Type:
    Engine Parts
    Color:
    Black
    Length Options:
    17 Inch
    Make:
    Universal Items
    $29.67
    Qty in Cart: 0
    Price:
    $29.67
    Subtotal:
  • BESTfit 7-5 Inch I.D. Exhaust Reducer

    BESTfit 7-5 Inch I.D. Exhaust Reducer

    BESTFIT TRUCK PARTS

    $62.99
    7-5 Inch Aluminized Exhaust Reducer By BESTfitMaintain reliable exhaust performance with the BESTfit 7-5 Inch I.D. Exhaust Reducer. Made from durable aluminized steel, it offers an 8-inch height and...
    09-080100601
    SKU:
    09-080100601
    Material Options:
    Aluminum
    Diameter Options:
    7 To 5 Inch
    Product Type:
    Exhaust
    Make:
    Universal Items
    $62.99
    Qty in Cart: 0
    Price:
    $62.99
    Subtotal:
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Adding your products to cart

Your Peterbilt 387 was built for serious miles—and we’ve got the parts to keep it going strong. Whether you’re repairing, replacing, or customizing, our aftermarket selection has the heavy-duty components you need to extend the life of your rig and upgrade its performance.

Why Buy Peterbilt 387 Parts from 4 State Trucks?

- Extend the Life of Your Rig: From cooling systems and replacement semi truck radiators to drivetrain parts, we help you tackle wear before it turns into downtime. - Upgrade Without the Hassle: Our aftermarket parts are designed for a clean fit—so you can get back on the road fast. - Customize Your Cab: Add chrome accents, trim pieces, or interior upgrades to match your personal style. - Heavy-Duty Quality, Built for the Job: Whether you're hauling freight across the country or managing a fleet, our parts are road-tested and shop-approved.

Customize Your Semi Truck Today

Shop online for Peterbilt 387 hood parts, cab lighting, interior flooring accessories, dashboard gauge trim, and everything in between. From work-ready replacements to sleek accessories that make your cab stand out, we carry premium parts that deliver value mile after mile. Looking for Peterbilt 387 hood replacements? Need bumper upgrades, mirror brackets, or replacement lighting? You’ll find all the right parts to restore, refresh, and personalize your 387.

Frequently Asked Questions About Peterbilt 387 Parts

What years are Peterbilt 387 parts compatible with, and are they interchangeable with other models?

Peterbilt 387 parts are specifically designed for model years 2000-2010. While some components like mirrors, lights, and interior accessories may fit other Peterbilt models (384, 385, 389), critical parts like bumpers, hoods, and grilles are model-specific due to mounting point differences. Always verify your truck's exact year and OEM before ordering to ensure proper fitment, as mid-year production changes can affect compatibility.

What materials are aftermarket Peterbilt 387 bumpers made from, and how do they compare to OEM?

Most aftermarket Peterbilt 387 bumpers are constructed from either 16-gauge steel or heavy-duty chrome-plated steel, matching or exceeding OEM specifications. Chrome bumpers typically feature a triple-plating process (copper, nickel, chrome) for corrosion resistance. Painted steel bumpers come with e-coat primer for durability. Quality aftermarket options often include reinforced mounting brackets and can handle the same load ratings as factory parts when properly installed.

What tools and hardware are needed to install Peterbilt 387 bumpers and grilles?

Installation typically requires basic hand tools including 3/4" and 7/8" wrenches, socket sets, and a torque wrench. Most bumpers use existing frame mounting holes but may require new Grade 8 bolts (usually 5/8" or 3/4"). Grille installation needs Phillips and flathead screwdrivers plus possible drill bits for aftermarket accessories. Plan for 2-4 hours installation time for bumpers and 1-2 hours for grilles. Some aftermarket parts include mounting hardware, but OEM-style installations often require separate hardware purchase.

What finish options are available for Peterbilt 387 exterior parts, and how long do they last?

Chrome-plated parts offer the traditional look and typically last 5-7 years with proper maintenance. Powder-coated finishes in black or custom colors provide 7-10 years of protection against rust and chips. Stainless steel options offer the longest lifespan (10+ years) but cost more initially. Painted parts come primed and ready for your choice of automotive paint. For maximum longevity, choose parts with warranty coverage and follow manufacturer care instructions, especially in areas with road salt exposure.

Do aftermarket Peterbilt 387 hoods and fenders affect aerodynamics or fuel efficiency?

Quality aftermarket hoods and fenders are designed to match OEM aerodynamic specifications and should not negatively impact fuel efficiency when properly installed and aligned. Some aftermarket options actually improve airflow with enhanced louver designs or smoother surfaces. Ensure proper gap alignment during installation (typically 3/8" to 1/2" panel gaps) to maintain aerodynamic efficiency. Misaligned panels can create drag and increase fuel consumption by 1-2 mpg.


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