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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
  • Seat Adjust Knob With Cap Replaces 23023203, 85105778, SK102507

    Seat Adjust Knob With Cap Replaces 23023203, 85105778, SK102507

    AFTERMARKET

    $33.59
    Gray Seat Adjust Knob With CapTake control of your seating comfort with the Seat Adjust Knob with Cap, a rugged, long-lasting replacement. This kit includes a knob, cap, bolt, and washer to provide...
    09-1900000
    SKU:
    09-1900000
    Product Type:
    Seats
    Shape Options:
    Round
    Color:
    Gray
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    $33.59
    Qty in Cart: 0
    Price:
    $33.59
    Subtotal:
  • 5 X 60 Inch Aluminized Steel Straight Exhaust Stack

    5 X 60 Inch Aluminized Steel Straight Exhaust Stack

    AFTERMARKET

    $80.99
    5 X 60 Inch Straight Exhaust StackEngineered for strength and longevity, this 5 x 60 Inch Aluminized Steel Straight Exhaust Stack combines rugged 16-gauge aluminized steel construction with precise...
    09-08011716
    SKU:
    09-08011716
    Diameter Options:
    5 Inch
    Length Options:
    60 Inch
    Material Options:
    Aluminum
    Product Type:
    Exhaust
    Size Options:
    16 Gauge
    Make:
    Universal Items
    $80.99
    Qty in Cart: 0
    Price:
    $80.99
    Subtotal:
  • 4 Inch Red Stop/ Turn/ Tail Light Replaces 39642, TLED 40R

    4 Inch Red Stop/ Turn/ Tail Light Replaces 39642, TLED 40R

    AFTERMARKET

    $29.00
    4 Inch Red Stop/ Turn/ Tail Light- Grommet MountMaximize safety and style on the road with the 4 Inch Red Stop/Turn/Tail Light, engineered for professional-grade performance. This compact LED light...
    09-160116163
    SKU:
    09-160116163
    Color:
    Red
    Material Options:
    Plastic/Poly
    Product Type:
    Lighting
    Style Options:
    Grommet Mount
    Diameter Options:
    4 Inch
    Make:
    Universal Items
    $29.00
    Qty in Cart: 0
    Price:
    $29.00
    Subtotal:
  • Stop Light Switch Replaces 38013, BE13250, 873706R91, 505026C1

    Stop Light Switch Replaces 38013, BE13250, 873706R91, 505026C1

    AFTERMARKET

    $13.88
    Stop Light Switch- 2 PinEnsure every stop light responds perfectly with this precision-engineered Stop Light Switch, designed to trigger at 5 PSI for reliable brake signaling. With 2-pin terminals...
    09-071000107
    SKU:
    09-071000107
    Material Options:
    Brass
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $13.88
    Qty in Cart: 0
    Price:
    $13.88
    Subtotal:
  • 3- In- 1 Airpower Line With Extended Grip Gladhands- 15 Ft

    3- In- 1 Airpower Line With Extended Grip Gladhands- 15 Ft

    AFTERMARKET

    $295.99
    Airpower Line With Gladhands- 15 FtSimplify your truck's air and electrical setup with this 3-in-1 Airpower Line with 15-foot length, designed for professional durability. Includes blue and red air...
    09-055416
    SKU:
    09-055416
    Product Type:
    Air, Electrical, & Safety
    Length Options:
    180 Inch
    Color:
    Various
    Material Options:
    Aluminum
    Make:
    Universal Items
    $295.99
    Qty in Cart: 0
    Price:
    $295.99
    Subtotal:
  • Poly Coolant Hose Replaces 56040, 24240

    Poly Coolant Hose Replaces 56040, 24240

    AFTERMARKET

    $110.99
    2.5 X 36 Inch Coolant HoseExtend the life of your truck's cooling system with this high-performance Poly Coolant Hose. Designed with 2-ply synthetic reinforcement and a Versigard EPDM wrapped finish,...
    09-070200009
    SKU:
    09-070200009
    Color:
    Black
    Length Options:
    36 Inch
    Diameter Options:
    2 1/2 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $110.99
    Qty in Cart: 0
    Price:
    $110.99
    Subtotal:
  • PAG 46 Oil- 8 Oz

    PAG 46 Oil- 8 Oz

    AFTERMARKET

    $14.94
    PAG 46 Oil For R134a A/C SystemsKeep your truck's A/C system running smoothly with this high-quality PAG 46 Oil, specially formulated for R134A refrigerant systems. This premium-grade lubricant...
    09-070000110
    SKU:
    09-070000110
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $14.94
    Qty in Cart: 0
    Price:
    $14.94
    Subtotal:
  • U Joint Set Replaces SPL2503X, 61250, US250X

    U Joint Set Replaces SPL2503X, 61250, US250X

    AFTERMARKET

    $100.99
    SPL250 Series U Joint SetProtect your truck's drivetrain with this high-quality Universal U-Joint Set, designed to replace SPL2503X, 61250, and US250X. The greaseable spring-tab design allows for...
    09-05210038
    SKU:
    09-05210038
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $100.99
    Qty in Cart: 0
    Price:
    $100.99
    Subtotal:
  • 5th Wheel Left Hand Rebuild Kit Replaces KITRPR6000L, RPR6000L, 3092792, 85105401

    5th Wheel Left Hand Rebuild Kit Replaces KITRPR6000L, RPR6000L, 3092792, 85105401

    AFTERMARKET

    $108.99
    5th Wheel Rebuild Kit- Left HandRestore your Fontaine 5th wheel assembly with the Left Hand Rebuild Kit, designed for precision and durability. The kit includes a step jaw, wedge, three handle...
    09-051100929
    SKU:
    09-051100929
    Position:
    Driver Side
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $108.99
    Qty in Cart: 0
    Price:
    $108.99
    Subtotal:
  • Zinc Plated Mud Flap Bolt Kit Replaces 031-01298, B516

    Zinc Plated Mud Flap Bolt Kit Replaces 031-01298, B516

    AFTERMARKET

    $2.26
    Mud Flap Bolt KitSecurely mount your mud flaps with confidence using the Zinc Plated Mud Flap Bolt Kit. This high-quality kit contains four zinc-plated bolts, eight flat washers, four lock washers,...
    09-05070642
    SKU:
    09-05070642
    Length Options:
    1 1/4 Inch
    Product Type:
    Mud Flaps
    Material Options:
    Steel
    Make:
    Universal Items
    $2.26
    Qty in Cart: 0
    Price:
    $2.26
    Subtotal:
  • 5th Wheel Left Hand Minor Rebuild Kit Replaces SK7322150Z

    5th Wheel Left Hand Minor Rebuild Kit Replaces SK7322150Z

    AFTERMARKET

    $159.99
    5th Wheel Minor Rebuild Kit- Left HandOptimize your 5th wheel's performance with the Left Hand Minor Rebuild Kit, specifically designed for JSK37 series wheels. The kit comes with a top plate, lock...
    09-051100930
    SKU:
    09-051100930
    Product Type:
    Frame & Chassis
    Position:
    Driver Side
    Make:
    Universal Items
    $159.99
    Qty in Cart: 0
    Price:
    $159.99
    Subtotal:
  • Fire Extinguisher Inside Decal

    Fire Extinguisher Inside Decal

    AFTERMARKET

    $2.24
    4.5 X 6.75 Inch Fire Extinguisher Inside DecalClearly mark your fire extinguisher with the Fire Extinguisher Inside Decal. This 6.750-inch by 4.50-inch decal is designed for high visibility and...
    09-020200106
    SKU:
    09-020200106
    Length Options:
    6 3/4 Inch
    Material Options:
    Vinyl
    Product Type:
    Cargo Control
    Width Options:
    4 1/2 Inch
    Make:
    Universal Items
    $2.24
    Qty in Cart: 0
    Price:
    $2.24
    Subtotal:
  • 24 X 24 Inch Black Poly Mud Flap- Anti Curl

    24 X 24 Inch Black Poly Mud Flap- Anti Curl

    AUTOMANN USA

    $19.14
    Anti Curl 24 X 24 Inch Mud FlapKeep your trucks and trailers safe from road debris with the 24 x 24 Inch Black Poly Mud Flap. Crafted from high-quality polyethylene, this 0.170-inch thick mud flap...
    09-050700275
    SKU:
    09-050700275
    Height Options:
    24 Inch
    Width Options:
    24 Inch
    Color:
    Black
    Finish Options:
    Smooth
    Length Options:
    1/8 Inch
    Material Options:
    Plastic/Poly
    Product Type:
    Mud Flaps
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $19.14
    Qty in Cart: 0
    Price:
    $19.14
    Subtotal:
  • HVAC Knob Set Replaces 121-0001-000, 1210001-000, 1210001000 For Peterbilt 300 Series, 587

    HVAC Knob Set Replaces 121-0001-000, 1210001-000, 1210001000 For Peterbilt 300 Series, 587

    AUTOMANN USA

    $9.13
    HVAC Knob Set- 3 PackRefresh your truck's dash controls with the HVAC Knob Set designed to fit Peterbilt models and replace part numbers 121-0001-000, 1210001-000, and 1210001000. This three-piece...
    01-150100258
    SKU:
    01-150100258
    Product Type:
    Interior
    Make:
    Peterbilt
    $9.13
    Qty in Cart: 0
    Price:
    $9.13
    Subtotal:
  • Poly Exhaust Mount Bushings - 4 Pack For Peterbilt

    Poly Exhaust Mount Bushings - 4 Pack For Peterbilt

    AUTOMANN USA

    $26.41
    0.375 ID X 1.27 OD X 1.25 Inch Exhaust Mount BushingsSecure your Peterbilt exhaust with this set of four poly exhaust mount bushings, measuring 0.375-inch inner diameter, 1.27-inch outer diameter,...
    01-080700017
    SKU:
    01-080700017
    Diameter Options:
    1 1/4 Inch
    Color:
    Blue
    Length Options:
    1 1/4 Inch
    Product Type:
    Exhaust
    Material Options:
    Plastic/Poly
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $26.41
    Qty in Cart: 0
    Price:
    $26.41
    Subtotal:
  • Power Steering Reservoir Replaces J86-1047-001 For Peterbilt

    Power Steering Reservoir Replaces J86-1047-001 For Peterbilt

    AFTERMARKET

    $271.99
    Power Steering ReservoirThis Power Steering Reservoir is engineered as a direct fit replacement for Peterbilt trucks, superseding part number J86-1047-001. Its robust construction helps prevent leaks...
    01-0714005
    SKU:
    01-0714005
    Diameter Options:
    6 1/4 Inch
    Height Options:
    4 Inch
    Product Type:
    Engine Parts
    Make:
    Peterbilt
    $271.99
    Qty in Cart: 0
    Price:
    $271.99
    Subtotal:
  • Male Clutch Rod End- Left Hand Replaces J2127014, J21270-14 For Peterbilt

    Male Clutch Rod End- Left Hand Replaces J2127014, J21270-14 For Peterbilt

    AFTERMARKET

    $41.20
    0.50 ID X 2.437 Inch Male Clutch Rod EndRestore optimal clutch performance with this Male Clutch Rod End - Left Hand, engineered to replace OEM part numbers J2127014 and J21270-14 for Peterbilt...
    01-05210003
    SKU:
    01-05210003
    Length Options:
    2 1/4 Inch
    Position:
    Driver Side
    Diameter Options:
    1/2 Inch
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $41.20
    Qty in Cart: 0
    Price:
    $41.20
    Subtotal:
  • U Joint Replaces SPL170X-4X, 6-1170, US170X, 2500678C91, 2104SPL170X, SPL1703X, SPL1704X, 3947697 For Peterbilt

    U Joint Replaces SPL170X-4X, 6-1170, US170X, 2500678C91, 2104SPL170X, SPL1703X, SPL1704X, 3947697 For Peterbilt

    AFTERMARKET

    $67.99
    SPL170 Series U JointKeep your driveline running strong with this heavy-duty U-Joint, engineered to replace SPL170X and multiple compatible part numbers including 4X-6-1170, US170X, 2500678C91,...
    01-05210004
    SKU:
    01-05210004
    Length Options:
    6 5/8 Inch
    Diameter Options:
    1 Inch
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $67.99
    Qty in Cart: 0
    Price:
    $67.99
    Subtotal:
  • Female Clutch Rod End- Right Hand For Peterbilt

    Female Clutch Rod End- Right Hand For Peterbilt

    AFTERMARKET

    $26.67
    0.375 ID X 2.593 Inch Female Clutch Rod EndEnsure smooth clutch operation with this high-quality Female Clutch Rod End - Right Hand, designed specifically for Peterbilt trucks. Built for durability...
    01-05210002
    SKU:
    01-05210002
    Length Options:
    2 1/2 Inch
    Position:
    Passenger Side
    Diameter Options:
    3/8 Inch
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $26.67
    Qty in Cart: 0
    Price:
    $26.67
    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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