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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
  • Transmission Pressure Switch Replaces 29512944, 29542944, 29552364 For Allison Transmissions

    Transmission Pressure Switch Replaces 29512944, 29542944, 29552364 For Allison Transmissions

    AFTERMARKET

    $46.02
    2.98 X 4.70 Inch 2 Pin Transmission Pressure Switch W/ Inch CableMaximize the life of your transmission with this heavy-duty Transmission Pressure Switch, designed for Allison transmissions. With a...
    29-07100027
    SKU:
    29-07100027
    Product Type:
    Engine Parts
    Length Options:
    4 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    $46.02
    Qty in Cart: 0
    Price:
    $46.02
    Subtotal:
  • Poly Multi V-Belt 12 Rib Serpentine Belt 86.3 X 1.68 Inch Replaces D8410006122180, K120858, 25-120858, 4120585X, 4120860X, 5120585 For Kenworth, Peterbilt

    Poly Multi V-Belt 12 Rib Serpentine Belt 86.3 X 1.68 Inch Replaces D8410006122180, K120858, 25-120858, 4120585X, 4120860X, 5120585 For Kenworth, Peterbilt

    AUTOMANN USA

    $123.99
    86.3 X 1.68 Inch Multi V-Belt 12 Rib Serpentine BeltMaintain reliable accessory drive performance with this premium Poly Multi V-Belt 12 Rib Serpentine Belt. With 12 ribs, 86.3-inch outer diameter,...
    29-07060176
    SKU:
    29-07060176
    Product Type:
    Engine Parts
    Width Options:
    1 5/8 Inch
    Make:
    Kenworth
    Make:
    Peterbilt
    $123.99
    Qty in Cart: 0
    Price:
    $123.99
    Subtotal:
  • 32 Inch Nylon 9 Blade Fan Blade Replaces 981813202, 991813202

    32 Inch Nylon 9 Blade Fan Blade Replaces 981813202, 991813202

    AFTERMARKET

    $224.99
    32 Inch Fan Blade- 9 BladesMaintain peak truck engine performance with this premium 32 Inch Nylon 9 Blade Fan Blade. Its 9 nylon blades, clockwise rotation, and 12 bolt holes provide efficient...
    29-07060184
    SKU:
    29-07060184
    Material Options:
    Nylon
    Diameter Options:
    32 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $224.99
    Qty in Cart: 0
    Price:
    $224.99
    Subtotal:
  • Turbo Charger Mounting Kit For Caterpillar 3406E

    Turbo Charger Mounting Kit For Caterpillar 3406E

    POWER PLAY PRODUCTS

    $91.99
    Caterpillar 3406E Turbo Charger Mounting KitKeep your Caterpillar 3406E engine running efficiently with this high-performance Turbo Charger Mounting Kit. The kit includes all required gaskets and...
    29-070400083
    SKU:
    29-070400083
    Style Options:
    Caterpillar
    Position:
    Kit Full
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $91.99
    Qty in Cart: 0
    Price:
    $91.99
    Subtotal:
  • 32 Inch Nylon 9 Blade Fan Blade Replaces 393256-32, 3415031, 3507212C1, 3571552C1, 981813253, 991813253

    32 Inch Nylon 9 Blade Fan Blade Replaces 393256-32, 3415031, 3507212C1, 3571552C1, 981813253, 991813253

    AUTOMANN USA

    $197.99
    32 Inch Fan Blade- 9 BladesKeep your truck engine cool under the toughest conditions with this high-quality 32 Inch Nylon 9 Blade Fan Blade. Featuring 9 blades made of durable nylon, clockwise...
    29-0706015
    SKU:
    29-0706015
    Material Options:
    Nylon
    Diameter Options:
    32 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    Subtotal:
  • Thermostat Replaces 2477133, 7C3095, 34289 For Caterpillar

    Thermostat Replaces 2477133, 7C3095, 34289 For Caterpillar

    AUTOMANN USA

    $37.10
    1.811 X 2.26 Inch ThermostatPrevent engine overheating with this heavy-duty Caterpillar thermostat. Rated at 192F, it maintains proper engine temperature for maximum performance and reliability. With...
    29-07020004
    SKU:
    29-07020004
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $37.10
    Qty in Cart: 0
    Price:
    $37.10
    Subtotal:
  • Turbo Charger Mounting Kit For Caterpillar C15

    Turbo Charger Mounting Kit For Caterpillar C15

    POWER PLAY PRODUCTS

    $127.99
    Caterpillar C15 Turbo Charger Mounting KitEnsure secure turbo mounting and prevent leaks with this durable Turbo Charger Mounting Kit for Caterpillar C15 engines. Complete with mounting hardware and...
    29-070400084
    SKU:
    29-070400084
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $127.99
    Qty in Cart: 0
    Price:
    $127.99
    Subtotal:
  • 14.00 Inch X 1.5 Inch Push Type Clutch Assembly Replaces LP1047104, LP1505134

    14.00 Inch X 1.5 Inch Push Type Clutch Assembly Replaces LP1047104, LP1505134

    AFTERMARKET

    $954.99
    Single Plate Clutch Assembly- 500 Lb- Ft TorqueOptimize your truck's drivetrain efficiency with this high-performance 14.00 Inch x 1.5 Inch Push Type Clutch Assembly. Its single plate, 8-spring...
    29-07050013
    SKU:
    29-07050013
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Length Options:
    14 1/2 Inch
    Width Options:
    1 1/2 Inch
    Make:
    Universal Items
    $954.99
    Qty in Cart: 0
    Price:
    $954.99
    Subtotal:
  • 13.78 Inch x 1.5 Inch Push Type Clutch Assembly Replaces 107621-1, 1076211

    13.78 Inch x 1.5 Inch Push Type Clutch Assembly Replaces 107621-1, 1076211

    AFTERMARKET

    $747.99
    Single Plate Clutch Assembly- 2400 Lb Plate Load, 500 Lb- Ft TorqueEnsure smooth power transfer and drivetrain reliability with this premium 13.78 Inch x 1.5 Inch Push Type Clutch Assembly...
    29-07050010
    SKU:
    29-07050010
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $747.99
    Qty in Cart: 0
    Price:
    $747.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Turbocharger Exhaust Pipe Gasket For Cummins ISX 12, ISX 15, X12 & X15 Engines

    Turbocharger Exhaust Pipe Gasket For Cummins ISX 12, ISX 15, X12 & X15 Engines

    DAYTON / DORMAN

    $11.53
    3.75 Inch ID X 5.00 Inch OD Exhaust Pipe GasketPrevent exhaust leaks and maintain turbo efficiency with this high-quality Turbocharger Exhaust Pipe Gasket, compatible with Cummins ISX 12, ISX 15,...
    29-070400085
    SKU:
    29-070400085
    Product Type:
    Engine Parts
    Diameter Options:
    5 Inch
    Style Options:
    Cummins
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $11.53
    Qty in Cart: 0
    Price:
    $11.53
    Subtotal:
  • Fuel Cover Locking Collar Replaces 23514061, 1694754C1, 380042, 3948920 For Cummins & Davco Fuel Pro 382 Fuel-Water Separators

    Fuel Cover Locking Collar Replaces 23514061, 1694754C1, 380042, 3948920 For Cummins & Davco Fuel Pro 382 Fuel-Water Separators

    AUTOMANN USA

    $21.62
    5 Inch ID X 6.210 Inch OD Fuel Cover Locking CollarMaintain a secure, leak-free fuel system with this premium Fuel Cover Locking Collar. Perfect for Cummins and Davco Fuel Pro 382 Fuel-Water...
    29-0703001
    SKU:
    29-0703001
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $21.62
    Qty in Cart: 0
    Price:
    $21.62
    Subtotal:
  • AC Discharge Hose Assembly Replaces F50-6242-1275, F5062421275 For PACCAR

    AC Discharge Hose Assembly Replaces F50-6242-1275, F5062421275 For PACCAR

    AFTERMARKET

    $398.99
    2- Pin AC Discharge Hose AssemblyDependable HVAC operation begins with this precision AC discharge hose assembly. Designed to replace F50-6242-1275 and F5062421275, it connects your compressor to the...
    29-07000015
    SKU:
    29-07000015
    Style Options:
    Paccar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $398.99
    Qty in Cart: 0
    Price:
    $398.99
    Subtotal:
  • Expansion Valve Replaces 4475001482, 31-31218

    Expansion Valve Replaces 4475001482, 31-31218

    AFTERMARKET

    $60.99
    2.895 X 1.00 X 1.390 Inch Block Type Expansion ValveEnsure efficient airflow and temperature regulation with this heavy-duty expansion valve. Designed to replace 4475001482 and 31-31218, this 1 Ton...
    29-07000010
    SKU:
    29-07000010
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $60.99
    Qty in Cart: 0
    Price:
    $60.99
    Subtotal:
  • Expansion Valve Replaces 101107, 140030103, 1601, 31-30956, 329499, 12-2013A

    Expansion Valve Replaces 101107, 140030103, 1601, 31-30956, 329499, 12-2013A

    AFTERMARKET

    $50.99
    8.895 X 1.000 X 1.875 Inch Block Type Expansion ValveKeep your truck's air conditioning system running at peak efficiency with this high-quality expansion valve. Designed to replace 101107,...
    29-07000012
    SKU:
    29-07000012
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • Pivot Bushing Kit Replaces 65352502

    Pivot Bushing Kit Replaces 65352502

    AFTERMARKET

    $457.99
    Pivot Bushing KitEngineered for heavy-duty suspension systems, this pivot bushing kit provides complete service coverage. The kit includes pivot bushing, eccentric and concentric collars, wear pads,...
    29-05250029
    SKU:
    29-05250029
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $457.99
    Qty in Cart: 0
    Price:
    $457.99
    Subtotal:
  • 4.813 X 40.25 Inch Aluminum Fuel Tank Step For Peterbilt, Kenworth

    4.813 X 40.25 Inch Aluminum Fuel Tank Step For Peterbilt, Kenworth

    AFTERMARKET

    $195.99
    4.813 X 40.25 Inch Fuel Tank Step Replaces K229-1169-3, K22911693Upgrade your truck's accessibility with a corrosion-resistant aluminum fuel tank step. This 40.25 x 4.813 x 1.930-inch step fits...
    29-06010002
    SKU:
    29-06010002
    Product Type:
    Fuel Tanks
    Material Options:
    Aluminum
    Length Options:
    40 Inch
    Width Options:
    4 3/4 Inch
    Make:
    Peterbilt
    Make:
    Kenworth
    Ready To Ship:
    Yes
    $195.99
    Qty in Cart: 0
    Price:
    $195.99
    Subtotal:
  • Knuckle Spacer Replaces 005208, R-005208

    Knuckle Spacer Replaces 005208, R-005208

    AFTERMARKET

    $104.99
    2.937 Inch Knuckle Spacer Used On Hendrickson Turner Lift AxleReduce alignment issues and extend component life with a knuckle spacer built for accuracy. This high-quality replacement spacer is...
    29-05200030
    SKU:
    29-05200030
    Product Type:
    Trailer
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • Piston Style Type 18/24 Disc Brake Replaces K025670, MJB1824DT051, 745K025670

    Piston Style Type 18/24 Disc Brake Replaces K025670, MJB1824DT051, 745K025670

    AFTERMARKET

    $317.99
    10.120 Inch Piston Style Type 18/24 Disc Brake W/ 2.5 Inch Stroke LengthAchieve reliable and precise braking with this Piston Style Type 18/24 Disc Brake. Features a 2.5-inch stroke length, two top...
    29-05170029
    SKU:
    29-05170029
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $317.99
    Qty in Cart: 0
    Price:
    $317.99
    Subtotal:
  • Knuckle Spacer Replaces 005881, R-005881 For Hendrickson-Turner Suspension

    Knuckle Spacer Replaces 005881, R-005881 For Hendrickson-Turner Suspension

    AFTERMARKET

    $104.99
    2.562 Inch Knuckle Spacer Used On Hendrickson Turner Lift AxleUpgrade your suspension service with a knuckle spacer built for heavy-duty reliability. Replacement for 005881 and R-005881, this...
    29-05250040
    SKU:
    29-05250040
    Product Type:
    Exterior
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • Radius Arm Bushing Replaces K201635

    Radius Arm Bushing Replaces K201635

    AFTERMARKET

    $58.99
    Radius Arm Bushing Fits Rear Wheel Drive Models OnlyMinimize suspension wear and improve ride quality with a high-quality radius arm bushing. Designed to replace K201635, this bushing is engineered...
    29-05250030
    SKU:
    29-05250030
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $58.99
    Qty in Cart: 0
    Price:
    $58.99
    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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