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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
  • 21 Inch Stainless Steel Blank Top Flap Accent Trim

    21 Inch Stainless Steel Blank Top Flap Accent Trim

    ROADWORKS

    $37.33
    21 Inch Blank Top Flap Accent TrimAchieve durable protection and a refined look with the 21 Inch Stainless Steel Blank Top Flap Accent Trim. Crafted from premium stainless steel and measuring 21...
    09-05070622
    SKU:
    09-05070622
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Mud Flaps
    Width Options:
    21 Inch
    Make:
    Universal Items
    $37.33
    Qty in Cart: 0
    Price:
    $37.33
    Subtotal:
  • 19 Inch Stainless Steel Blank Top Flap Accent Trim

    19 Inch Stainless Steel Blank Top Flap Accent Trim

    ROADWORKS

    $36.29
    19 Inch Blank Top Flap Accent TrimUpgrade your truck's mud flaps with the 19 Inch Stainless Steel Blank Top Flap Accent Trim, crafted from premium stainless steel for exceptional durability and...
    09-05070621
    SKU:
    09-05070621
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Mud Flaps
    Width Options:
    19 Inch
    Make:
    Universal Items
    $36.29
    Qty in Cart: 0
    Price:
    $36.29
    Subtotal:
  • Stainless Steel “I Love My Kids” Flap Weights

    Stainless Steel “I Love My Kids” Flap Weights

    ROADWORKS

    $71.99
    24 Inch "I Love My Kids" Flap WeightsExpress your love and personalize your truck with the Stainless Steel "I Love My Kids" Flap Weights, designed for durability and style. Made from high-quality...
    09-05070605
    SKU:
    09-05070605
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Mud Flaps
    Width Options:
    24 Inch
    Make:
    Universal Items
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • 15 Inch Stainless Steel Blank Top Flap Accent Trim

    15 Inch Stainless Steel Blank Top Flap Accent Trim

    ROADWORKS

    $33.18
    15 Inch Blank Top Flap Accent TrimStrengthen your mud flaps and elevate your truck's look with the 15 Inch Stainless Steel Blank Top Flap Accent Trim. Made from premium stainless steel, each 15-inch...
    09-05070620
    SKU:
    09-05070620
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Mud Flaps
    Width Options:
    15 Inch
    Make:
    Universal Items
    $33.18
    Qty in Cart: 0
    Price:
    $33.18
    Subtotal:
  • 1/4 X 1-1/2 Inch Brass Long Nipple Replaces 3327X4, 215PNL415

    1/4 X 1-1/2 Inch Brass Long Nipple Replaces 3327X4, 215PNL415

    AUTOMANN USA

    $2.54
    1/4 X 1-1/2 Inch Brass Long NippleBuild dependable connections with the 1/4 X 1-1/2 Inch Brass Long Nipple, a premium brass fitting designed for leak-free performance. With male NPT threads on both...
    09-05040130
    SKU:
    09-05040130
    Diameter Options:
    1/4 Inch
    Length Options:
    1 1/2 Inch
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $2.54
    Qty in Cart: 0
    Price:
    $2.54
    Subtotal:
  • 1/2 X 1-1/2 Inch Brass Long Nipple Replaces 215PNL815

    1/2 X 1-1/2 Inch Brass Long Nipple Replaces 215PNL815

    AUTOMANN USA

    $3.80
    1/2 X 1-1/2 Inch Brass Long NippleDepend on the 1/2 X 1-1/2 Inch Brass Long Nipple for strong, leak-resistant pipe connections. Crafted from solid brass with male NPT threads on both ends, this...
    09-05040117
    SKU:
    09-05040117
    Diameter Options:
    1/2 Inch
    Length Options:
    1 1/2 Inch
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $3.80
    Qty in Cart: 0
    Price:
    $3.80
    Subtotal:
  • 3/16 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10503B102

    3/16 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10503B102

    AUTOMANN USA

    $0.91
    3/16 Inch Barb X 1/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/16" Push-On Hose* Made Of Brass* Barb Hose End: 3/16 Inch Inner Diameter* Male NPT...
    09-05040116
    SKU:
    09-05040116
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $0.91
    Qty in Cart: 0
    Price:
    $0.91
    Subtotal:
  • 3/16 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10503B104

    3/16 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10503B104

    AUTOMANN USA

    $1.81
    3/16 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040115
    SKU:
    09-05040115
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $1.81
    Qty in Cart: 0
    Price:
    $1.81
    Subtotal:
  • 3/8 X 1-1/2 Inch Brass Long Nipple Replaces 3327X6, 215PNL615

    3/8 X 1-1/2 Inch Brass Long Nipple Replaces 3327X6, 215PNL615

    AUTOMANN USA

    $3.81
    3/8 X 1-1/2 Inch Brass Long NippleAchieve reliable and leak-free connections with the 3/8 X 1-1/2 Inch Brass Long Nipple, a high-quality fitting built for durability and professional performance...
    09-05040119
    SKU:
    09-05040119
    Diameter Options:
    3/8 Inch
    Length Options:
    1 1/2 Inch
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $3.81
    Qty in Cart: 0
    Price:
    $3.81
    Subtotal:
  • 3/8 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10506B106, 125HBL66

    3/8 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10506B106, 125HBL66

    AUTOMANN USA

    $2.30
    3/8 Inch Barb X 3/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040113
    SKU:
    09-05040113
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Diameter Options:
    3/8 Inch
    Make:
    Universal Items
    $2.30
    Qty in Cart: 0
    Price:
    $2.30
    Subtotal:
  • 3/8 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10506B104, 125HBL64

    3/8 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10506B104, 125HBL64

    AUTOMANN USA

    $2.25
    3/8 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040112
    SKU:
    09-05040112
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $2.25
    Qty in Cart: 0
    Price:
    $2.25
    Subtotal:
  • 3/8 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10506B102, 125HBL62

    3/8 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10506B102, 125HBL62

    AUTOMANN USA

    $1.57
    3/8 Inch Barb X 1/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040111
    SKU:
    09-05040111
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $1.57
    Qty in Cart: 0
    Price:
    $1.57
    Subtotal:
  • 3/8 Inch Barb X 1/2 Inch Pipe Brass Hose Fitting Replaces 10506B108, 125HBL68

    3/8 Inch Barb X 1/2 Inch Pipe Brass Hose Fitting Replaces 10506B108, 125HBL68

    AUTOMANN USA

    $3.90
    3/8 Inch Barb X 1/2 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040114
    SKU:
    09-05040114
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $3.90
    Qty in Cart: 0
    Price:
    $3.90
    Subtotal:
  • 5/16 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10505B102, 125HBL52

    5/16 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10505B102, 125HBL52

    AUTOMANN USA

    $2.25
    5/16 Inch Barb X 1/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 5/16" Push-On Hose* Made Of Brass* Barb Hose End: 5/16 Inch Inner Diameter* Male NPT...
    09-05040109
    SKU:
    09-05040109
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $2.25
    Qty in Cart: 0
    Price:
    $2.25
    Subtotal:
  • 1/4 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10504B104, 125HBL44

    1/4 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10504B104, 125HBL44

    AUTOMANN USA

    $1.57
    1/4 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/4" Push-On Hose* Made Of Brass* Barb Hose End: 1/4 Inch Inner Diameter* Male NPT...
    09-05040108
    SKU:
    09-05040108
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $1.57
    Qty in Cart: 0
    Price:
    $1.57
    Subtotal:
  • 5/16 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10505B104, 125HBL54

    5/16 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10505B104, 125HBL54

    AUTOMANN USA

    $1.79
    5/16 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 5/16" Push-On Hose* Made Of Brass* Barb Hose End: 5/16 Inch Inner Diameter* Male NPT...
    09-05040110
    SKU:
    09-05040110
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $1.79
    Qty in Cart: 0
    Price:
    $1.79
    Subtotal:
  • 1/4 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10504B102, 125HBL42

    1/4 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10504B102, 125HBL42

    AUTOMANN USA

    $1.14
    1/4 Inch Barb X 1/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/4" Push-On Hose* Made Of Brass* Barb Hose End: 1/4 Inch Inner Diameter* Male NPT...
    09-05040107
    SKU:
    09-05040107
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $1.14
    Qty in Cart: 0
    Price:
    $1.14
    Subtotal:
  • 1/2 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10508B106, 125HBL86, 1256

    1/2 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10508B106, 125HBL86, 1256

    AUTOMANN USA

    $2.19
    1/2 Inch Barb X 3/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/2" Push-On Hose* Made Of Brass* Barb Hose End: 1/2 Inch Inner Diameter* Male NPT...
    09-05040105
    SKU:
    09-05040105
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $2.19
    Qty in Cart: 0
    Price:
    $2.19
    Subtotal:
  • 1/2 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10508B104, 125HBL84

    1/2 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10508B104, 125HBL84

    AUTOMANN USA

    $2.01
    1/2 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/2" Push-On Hose* Made Of Brass* Barb Hose End: 1/2 Inch Inner Diameter* Male NPT...
    09-05040104
    SKU:
    09-05040104
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $2.01
    Qty in Cart: 0
    Price:
    $2.01
    Subtotal:
  • 1/4 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10504B106. 125HBL46

    1/4 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10504B106. 125HBL46

    AUTOMANN USA

    $1.72
    1/4 Inch Barb X 3/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/4" Push-On Hose* Made Of Brass* Barb Hose End: 1/4 Inch Inner Diameter* Male NPT...
    09-05040106
    SKU:
    09-05040106
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $1.72
    Qty in Cart: 0
    Price:
    $1.72
    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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