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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.
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  • 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:
  • 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
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  • 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
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  • 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
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  • 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:
  • 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
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  • 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:
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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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