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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 DEF Sensor Head Assembly Replaces 077905V01501, 21640012, 46699859

    BESTfit DEF Sensor Head Assembly Replaces 077905V01501, 21640012, 46699859

    BESTFIT TRUCK PARTS

    $887.99
    Diesel Exhaust Fluid Sensor Head Assembly By BESTfitDepend on the BESTfit DEF Sensor Head Assembly for reliable DEF system performance. Designed for CAT C3.6 and C4.4 engines, it monitors diesel...
    29-06070018
    SKU:
    29-06070018
    Product Type:
    Fuel Tanks
    Height Options:
    11 Inch
    Make:
    Universal Items
    $887.99
    Qty in Cart: 0
    Price:
    $887.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Jump Starter 12 Volt 4000A

    Jump Starter 12 Volt 4000A

    AUTOMANN USA

    $157.99
    12 V. 4000A Portable Jump StarterStay ready for unexpected breakdowns with the Jump Starter 12 Volt 4000A, built for heavy-duty truck starting power. This high-performance portable unit is designed...
    09-21010001
    SKU:
    09-21010001
    Product Type:
    Tools
    Make:
    Universal Items
    $157.99
    Qty in Cart: 0
    Price:
    $157.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Jump Starter 12 Volt 3000A

    Jump Starter 12 Volt 3000A

    AUTOMANN USA

    $116.99
    12 V 3000A Portable Jump StarterStay prepared for unexpected breakdowns with the Jump Starter 12 Volt 3000A, built for medium-duty truck use. This portable jump starter delivers reliable 12-volt...
    09-21010002
    SKU:
    09-21010002
    Product Type:
    Tools
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $116.99
    Qty in Cart: 0
    Price:
    $116.99
    Subtotal:
  • FREE SHIPPING
    Lithium-Ion Jump Starter 12/24 Volts

    Lithium-Ion Jump Starter 12/24 Volts

    AUTOMANN USA

    $632.99
    12/24 V. Portable Jump StarterGet back on the road faster with the Lithium-Ion Jump Starter, engineered for heavy-duty commercial and fleet truck use. This high-quality portable jump starter delivers...
    09-21010000
    SKU:
    09-21010000
    Product Type:
    Tools
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $632.99
    Qty in Cart: 0
    Price:
    $632.99
    Subtotal:
  • BESTfit DEF Doser Injector Kit Replaces 043028, 2121300002 For Cummins

    BESTfit DEF Doser Injector Kit Replaces 043028, 2121300002 For Cummins

    BESTFIT TRUCK PARTS

    $131.99
    Diesel Exhaust Fluid Doser Injector Kit By BESTfit Replaces 043028, 2121300002 Fits CumminsKeep emissions systems performing efficiently with the BESTfit DEF Doser Injector Kit, a direct replacement...
    09-06070004
    SKU:
    09-06070004
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • BESTfit DEF Filter Replaces 37332, 5002862, AP65142

    BESTfit DEF Filter Replaces 37332, 5002862, AP65142

    BESTFIT TRUCK PARTS

    $144.99
    Diesel Exhaust Fluid Filter By BESTfitKeep your DEF system operating cleanly and efficiently with the BESTfit DEF Filter, designed as a replacement for 37332, 5002862, and AP65142 in heavy-duty...
    09-06070001
    SKU:
    09-06070001
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $144.99
    Qty in Cart: 0
    Price:
    $144.99
    Subtotal:
  • BESTfit DEF Doser Injector Kit For Cummins Replaces 043027, 2121300003, 321353

    BESTfit DEF Doser Injector Kit For Cummins Replaces 043027, 2121300003, 321353

    BESTFIT TRUCK PARTS

    $131.99
    Diesel Exhaust Fluid Doser Injector Kit By BESTfit Replaces 043027, 2121300003, 321353 Fits CumminsMaintain accurate emissions dosing with the BESTfit DEF Doser Injector Kit, replacing 043027,...
    09-06070002
    SKU:
    09-06070002
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • BESTfit DEF Doser Injector Kit Replaces 2121300001 For Cummins

    BESTfit DEF Doser Injector Kit Replaces 2121300001 For Cummins

    BESTFIT TRUCK PARTS

    $131.99
    Diesel Exhaust Fluid Doser Injector Kit By BESTfit Fits CumminsDepend on strong emissions system performance with the BESTfit DEF Doser Injector Kit, a replacement for 2121300001. Designed for...
    09-06070003
    SKU:
    09-06070003
    Position:
    Kit Full
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • BESTfit Charge Air Cooler 37.25 x 33.375 x 2 Inch For Peterbilt

    BESTfit Charge Air Cooler 37.25 x 33.375 x 2 Inch For Peterbilt

    BESTFIT TRUCK PARTS

    $1,181.99
    Tube And Fin Charge Air Cooler W/ 4 Inch Inlet & Outlet By BESTfitThe BESTfit Charge Air Cooler Tube and Fin for Peterbilt is a high-performance solution designed to keep your engine running...
    01-070100005
    SKU:
    01-070100005
    Width Options:
    33 1/2 Inch
    Height Options:
    37 Inch
    Product Type:
    Engine Parts
    Make:
    Peterbilt
    $1,181.99
    Qty in Cart: 0
    Price:
    $1,181.99
    Subtotal:
  • BESTfit Air Operated Fan Hub, Replaces F176014M34, 10024141 For Peterbilt

    BESTfit Air Operated Fan Hub, Replaces F176014M34, 10024141 For Peterbilt

    BESTFIT TRUCK PARTS

    $434.99
    Air Operated Fan Hub By BESTfit Replaces F176014M34, 10024141 Fits PeterbiltRestore dependable cooling performance with the BESTfit Air Operated Fan Hub Replacing F176014M34 and 10024141 for...
    01-07060018
    SKU:
    01-07060018
    Product Type:
    Engine Parts
    Make:
    Peterbilt
    $434.99
    Qty in Cart: 0
    Price:
    $434.99
    Subtotal:
  • Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Paccar MX-13

    Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Paccar MX-13

    BULLY DOG

    $5,000.00
    Choose Option(s) to see description.Fitment** Fits Models W/ PACCAR MX-13 Engines 2010-2013Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator Replaces 5355091 For Paccar MX-13Paccar MX-13 Stage 1 VGT...
    PPR_300802
    SKU:
    PPR_300802
    Material Options:
    Billet Aluminum
    Product Type:
    Engine Parts
    Style Options:
    Paccar
    Make:
    Universal Items
    Make:
    Other - Semi-Truck
    $5,000.00
    Qty in Cart: 0
    Price:
    $5,000.00
    Subtotal:
  • Bully Dog Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins X15 CM2350 & CM2450

    Bully Dog Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins X15 CM2350 & CM2450

    BULLY DOG

    $6,000.00
    Experience more responsive power and improved engine efficiency with this Stage 1 Billet Wheel VGT Turbo Charger with Actuator, designed for Cummins X15 Low or High HP engines and replacing 5459710...
    PPR_300798
    SKU:
    PPR_300798
    Material Options:
    Billet Aluminum
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Other - Semi-Truck
    Make:
    Universal Items
    $6,000.00
    Qty in Cart: 0
    Price:
    $6,000.00
    Subtotal:
  • Limited Quantity Available
    BESTfit A/C O- Ring Kit For Early Or Late Model Applications

    BESTfit A/C O- Ring Kit For Early Or Late Model Applications

    BESTFIT TRUCK PARTS

    $4.99 - $14.99
    Ensure a secure, leak-free seal in your air conditioning system with the BESTfit A/C O-Ring Kit for early or late model applications. This high-quality kit is made from durable EPDM material,...
    PPR_300804
    SKU:
    PPR_300804
    Color:
    Green
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $4.99 - $14.99
    Qty in Cart: 0
    Price:
    $4.99 - $14.99
    Subtotal:
  • Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISX15, X15 & QSX

    Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISX15, X15 & QSX

    BULLY DOG

    $4,750.00
    If your goal is smoother boost and reduced turbo lag, this Stage 1 VGT Turbo Charger offers a refined upgrade path. Featuring a billet aluminum compressor wheel and upgraded diffuser plates, the...
    PPR_300797
    SKU:
    PPR_300797
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Material Options:
    Billet Aluminum
    Make:
    Other - Semi-Truck
    Make:
    Universal Items
    $4,750.00
    Qty in Cart: 0
    Price:
    $4,750.00
    Subtotal:
  • Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISX 871

    Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISX 871

    BULLY DOG

    $4,750.00
    Maximize torque, efficiency, and reliability with the Stage 1 Billet Wheel VGT Turbo Charger with Actuator, replacing 3774613/2881993/4309078 for Cummins ISX 871 engines. The aluminum billet...
    PPR_300799
    SKU:
    PPR_300799
    Material Options:
    Billet Aluminum
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Other - Semi-Truck
    Make:
    Universal Items
    $4,750.00
    Qty in Cart: 0
    Price:
    $4,750.00
    Subtotal:
  • Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISB 6.7L

    Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISB 6.7L

    BULLY DOG

    $4,398.00
    Boost your Cummins ISB 6.7L performance with the Stage 1 Billet Wheel VGT Turbo Charger with Actuator, a direct replacement for 3789505/6411490/6411519. Its aluminum billet wheel, Cobalt VGT cage,...
    PPR_300800
    SKU:
    PPR_300800
    Product Type:
    Engine Parts
    Material Options:
    Billet Aluminum
    Style Options:
    Cummins
    Make:
    Other - Semi-Truck
    Make:
    Universal Items
    $4,398.00
    Qty in Cart: 0
    Price:
    $4,398.00
    Subtotal:
  • Load- Share Steer Axle Ride Kit Fits 3.5 Or 4 Inch Leaf Spring With Square Top U-Bolts & Standard U-Bolt Spacing

    Load- Share Steer Axle Ride Kit Fits 3.5 Or 4 Inch Leaf Spring With Square Top U-Bolts & Standard U-Bolt Spacing

    LOAD-SHARE SUSPENSIONS

    $1,085.99 - $1,252.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of TrucksLoad- Share Steer Axle Ride Kit Fits 3.5 Inch Leaf-Spring With Square-Top U-Bolts & Standard U-Bolt...
    PPR_300796
    SKU:
    PPR_300796
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $1,085.99 - $1,252.99
    Qty in Cart: 0
    Price:
    $1,085.99 - $1,252.99
    Subtotal:
  • 304 SS Quarter Fender Bracket For Peterbilt Low Air & Kenworth AG400L Suspension

    304 SS Quarter Fender Bracket For Peterbilt Low Air & Kenworth AG400L Suspension

    HOGEBUILT FENDERS

    $455.99
    Choose Option(s) to see description.Fitment* Fits Kenworth C500 2005 thru Current* Fits Kenworth K260 2007 thru 2012* Fits Kenworth K360 2007 thru 2012* Fits Kenworth K270 2013 thru Current* Fits...
    PPR_300784
    SKU:
    PPR_300784
    Material Options:
    Stainless Steel
    Position:
    Driver Side
    Product Type:
    Rear Fenders
    Truck Class:
    Heavy Duty
    Position:
    Passenger Side
    Make:
    Kenworth
    Make:
    Peterbilt
    $455.99
    Qty in Cart: 0
    Price:
    $455.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Steel Fender Rear Mounting Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension 2005 & Newer

    Steel Fender Rear Mounting Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension 2005 & Newer

    SHIFT PRODUCTS

    $149.99
    This steel fender bracket is made for installing the fender on either the driver side or passenger side of Peterbilt Low Airleaf trucks from 2005 and newer, as well as Kenworth trucks with AG400L...
    PPR_300780
    SKU:
    PPR_300780
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Position:
    Driver Side
    Position:
    Passenger Side
    Product Type:
    Rear Fenders
    Make:
    Kenworth
    Make:
    Peterbilt
    $149.99
    Qty in Cart: 0
    Price:
    $149.99
    Subtotal:
  • Driver/Passenger Side Steel Half Fender Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension

    Driver/Passenger Side Steel Half Fender Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension

    SHIFT PRODUCTS

    $170.99
    This half fender bracket is designed for secure mounting of fiberglass fenders on Peterbilt trucks with Low Airleaf suspension (2005 and newer) and Kenworth trucks with AG400L suspension. Made for...
    PPR_300783
    SKU:
    PPR_300783
    Position:
    Driver Side
    Position:
    Passenger Side
    Product Type:
    Rear Fenders
    Material Options:
    Steel
    Type Options:
    Half
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    $170.99
    Qty in Cart: 0
    Price:
    $170.99
    Subtotal:
  • Total: items /

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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