Peterbilt Truck Parts

Kustom Truck Parts specializes in Peterbilt parts engineered for engine conversions, wiring upgrades, and custom performance applications. Our components are built for truck owners who need precise fitment, consistent reliability, and clean integration with modern or legacy engines. If you’re upgrading or replacing a power plant, our Peterbilt truck parts provide the adapters, harnesses, brackets, tubing, and mounting solutions necessary to connect new systems to the existing chassis.

Engineered for Custom Peterbilt Builds

Peterbilt trucks are renowned for strength and longevity, making them ideal candidates for engine swaps and performance upgrades. We manufacture custom Peterbilt parts designed specifically for these projects—from direct fit wiring harnesses to durable piping kits and precision-cut brackets. Every part is engineered to match the demands of heavy-duty conversions and support CAT, Cummins, or Detroit Diesel platforms without unnecessary modification.

peterbilt parts

Why Peterbilt Owners Choose Kustom Truck Parts

  • Purpose-built products for engine conversions
  • Strong, reliable components engineered for heavy use
  • Support for Caterpillar, Cummins, and Detroit Diesel platforms
  • Fast shipping with verified compatibility
  • Clear fitment guidance and technical support
peterbilt parts

Wiring Harnesses Built for Seamless Integration

When converting an engine, the electrical interface is the foundation of performance. Our Peterbilt harnesses are purpose-built for CAT, Cummins, and Detroit engine swaps into Peterbilt trucks. They provide a direct interface between the new engine ECM and the original truck chassis electronics, restoring full dash functionality—all gauges, switches, and warning lights work perfectly. Built for extreme durability and heat resistance, every harness is individually tested for continuity ensuring correct pinouts.

Frequently Asked Questions

Do you sell general aftermarket Peterbilt replacement parts?

Kustom Truck Parts focuses exclusively on components used during engine conversions. We do not sell standard body panels, lighting kits, or cosmetic accessories.

What Peterbilt models are compatible with your wiring harnesses?

Our harnesses support a wide range of Peterbilt trucks, especially those undergoing CAT, Cummins, or Detroit Diesel engine conversions. Fitment is confirmed using your VIN or engine serial number.

Can your Peterbilt piping kits be used with OEM engine configurations?

Some can, but they are primarily designed to solve routing challenges during engine swaps. These kits provide reliable solutions when OEM components no longer match the updated engine layout.

What components do I need for a Peterbilt engine conversion?

Most conversions require wiring harnesses, piping kits, brackets, and a combination of engine up-fit components. Our team can help you select parts based on your engine choice and truck model.

Engine Upfit Components for a Complete Conversion

Kustom Truck Parts provides the hardware needed to make a CAT, Cummins, or Detroit engine fit and function perfectly in your Peterbilt. Our upfit parts – including charge air cooler intake elbows, fan hubs & blades, A/C & alternator mounting brackets, turbo outlet elbows, oil pan swap kits, and power steering pumps – are designed specifically for cross-brand engine swaps where the replacement engine’s factory components don’t match the chassis. These parts eliminate fitment headaches, deliver clean factory-style installations, and ensure long-term reliability.

custom peterbilt parts

Get Peterbilt Parts Built for Engine Conversions

Kustom Truck Parts is your source for dependable products that support Peterbilt truck parts conversion projects. Explore our custom-engineered components or contact our team for expert guidance on your next build.

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