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Peterbilt Parts

Find affordable, high-performance aftermarket Peterbilt truck parts and accessories at 4 State Trucks. We stock exact-fit, OEM-alternative components for classic and next-gen models (379, 579, 389+)—from PACCAR MX-13 engine upgrades to custom chrome stacks and interior sleeper-cab restorations.

Peterbilt Parts

Premium Peterbilt Truck Parts, Accessories & Chrome Upgrades

Find the perfect accessories to personalize your truck inside and out. Upgrade the exterior cab with chrome drop visors, grilles, bumpers, exhaust stacks, and rear bumper light bars, or decorate your sleeper with dual-revolution watermelon lights, side panel trim, and flooring upgrades. Get precise fitments on replacement parts, new chrome, and interior cab accessories whether you drive a classic 1987 Peterbilt 379 model or a modern 567 or 579 model. Search by VIN, part number, or make/model, and filter through multiple brands, colors, prices, sizes, dimensions, materials, and more.
We stock thousands of made-to-order parts that ship directly from our warehouse to your address. From under-the-hood performance parts to stylish Peterbilt chrome exterior parts, we've got you covered: - Add more fuel storage with a Peterbilt fuel tank replacement. - Customize the exterior with long-drop chrome exhaust elbows and other chrome accessories. - Refurbish the sleeper with Peterbilt 379 and 389 interior trim kits. Aftermarket parts are designed to meet or exceed OEM specifications while giving Peterbilt owners a more affordable price point and wider in-stock availability nationwide. Experience fast shipping, nationwide delivery for thousands of aftermarket and OEM-equivalent Peterbilt truck parts.

Frequently Asked Questions About Peterbilt Parts

Which Peterbilt parts fit my specific truck model and year?

Peterbilt parts compatibility varies significantly by model (379, 389, 567, 579) and year range. Most aftermarket parts list specific model years they fit, such as "2005-2007 379" or "2008+ 389." Always check the product description for your exact model/year combination. Key differences include hood lengths (127" vs 131"), headlight configurations (dual vs quad), and mounting hole patterns. When in doubt, contact us with your OEM number for verification before ordering.

What's the difference between OEM and aftermarket Peterbilt parts quality?

OEM parts are manufactured to Peterbilt's exact specifications, ensuring perfect fit and original quality. Aftermarket parts vary widely - premium brands like Jones Performance and Roadworks match or exceed OEM quality with enhanced features, while economy options may use thinner materials or less precise manufacturing. For critical components like air lines and electrical parts, OEM or premium aftermarket is recommended. For cosmetic items like grille bars or light bezels, quality aftermarket options provide excellent value.

How difficult is it to install Peterbilt bumpers and exterior accessories?

Installation difficulty depends on the part. Bumpers typically require 2-3 hours with basic tools and often need two people due to weight (150-300 lbs). Most bolt directly to existing mounting points, but some aftermarket bumpers may require drilling. Common challenges include aligning fog light wiring, adjusting for proper hood clearance, and ensuring level mounting. Grilles and light bars usually install in 30-60 minutes. Professional installation is recommended for air ride suspensions and complex electrical components.

What finishes and materials are available for Peterbilt chrome parts?

Peterbilt parts come in several finishes: mirror-polished stainless steel (most durable, won't rust), triple-chrome plated steel (classic look, requires maintenance), powder-coated aluminum (lightweight, various colors), and ABS plastic chrome (economical, for non-structural parts). Stainless steel costs more initially but lasts longer in harsh conditions. Chrome-plated parts offer the brightest shine but need regular polishing and can pit in winter climates. Powder coating provides color options and good durability for brackets and non-show parts.

Do I need to modify my Peterbilt to install aftermarket parts?

Most quality aftermarket parts are designed as direct replacements requiring no modifications. However, some situations require minor adjustments: custom bumpers may need new bracket holes drilled, LED conversions might require resistors or flasher relay changes, and oversized parts like 20-inch bumpers on pre-2005 models may need spacers. Always verify "direct fit" claims in product descriptions. Parts requiring cutting, welding, or significant modifications will be clearly noted. Keep factory parts when possible in case you need to return to stock configuration.


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