Diesel Performance Parts - USA & Canada
Build a complete kit or shop individual parts.
Use the Kit Builder for one truck or multiple trucks, or shop individual exhaust, tuning, intake, switch, and accessory products by exact fitment.
Find your products
Pick your truck year
Choose a year to shop individual parts already filtered to that exact truck path.
Unlimited Packages
Start with the complete package.
Trusted diesel brands
We carry only the brands that make sense for serious builds.
From tuning and switch hardware to exhaust, intake, and support parts, Unlimited Diesels keeps the product paths focused on names diesel owners already know and trust.
How it works
Build around your truck, not a generic parts list.
Select the truck
Choose the platform and exact year range, or use VIN lookup to identify the vehicle.
Choose the product path
Narrow the store to tuning, exhaust, EGR, intake, switches, support parts, or a complete package.
Confirm and checkout
Review variants, VIN details, modification notes, add-ons, shipping information, and the final cart.
Install
Read before you wrench.
Open the instruction library and confirm the guide matches the truck and product before removing or installing parts.
View InstructionsSupport
Not sure what fits?
Send the truck, engine, product, and order details through the guided support form before ordering.
Contact SupportOrders
Track an existing order.
Sign in with the checkout email to view your Shopify orders and available tracking.
View My OrdersCommon questions
Know the next step before checkout.
Should I use the Kit Builder or Shop Parts?
Use the Kit Builder for a complete setup for one truck or multiple trucks. Use Shop Parts when you only need an exhaust, tuner, intake, switch, or another individual item.
How do I know a product fits?
Start in Shop Parts, choose the exact truck path, then review every product variant and fitment note. VIN lookup is a helper, not a fitment guarantee.
When is a VIN required?
Tuning, tune files, unlocked modules, and some complete packages may require a VIN so the order can be matched to the correct vehicle.
Where are installation instructions?
The instruction library groups available guides by platform and product type. Stop and contact support if the guide does not match the truck.
How are shipping and processing times calculated?
Available shipping methods appear at checkout. Custom, VIN-matched, tuning, and special-order products may require processing before shipment.
Can competition-use products be used on public roads?
Products that affect emissions may be restricted to competition, race, off-road, export, or other lawful uses. Confirm applicable laws before purchase or installation.
Ready to start?
Build a complete kit or shop the one part you need.
The Kit Builder works for one truck or multiple trucks. Shop Parts filters individual products to your exact truck.