Free shipping over $150 · L5P Duramax parts · Custom work in North Carolina
L&D Diesel LLC · North Carolina

Run it
harder.
Built for the L5P.

We build it, weld it, and bolt it in our own bay in North Carolina. EGR kits, downpipe-back exhaust, and hardware for 2017+ Duramax trucks — the stuff on this site is on our own trucks.

Free Ship $150+
Shipped from NC
Diesel-Only
We don't dabble
30-Day Returns
No hassle
Tech Support
Talk to a wrench
// Shop by System

Pick Your Upgrade

// Featured

On the Bench

No products yet

Tell me what you want to sell in chat — name, price, short description — and I'll load it into your store.

e.g. "Add a 4-inch lift kit for $899"

// From the Bay

Real Trucks, Real Work

Red intake tubing and turbo on a customer L5P in the L&D bay
Intake + turbo, customer L5P
Wide shot of a Duramax engine bay mid-build at L&D Performance Diesel
Mid-build in the bay
Close-up of fabricated intake piping built by L&D Performance Diesel
Fabricated, welded, shipped
// Straight from the Shop

Builds, reels,
and shop days.

Every truck that rolls through the bay ends up on our Facebook — teardowns, welds, dyno pulls, and the occasional cold start. It's the fastest way to see what we actually do.

// The Code

Shop-built.
Truck-proven.

We're a small North Carolina shop that got tired of babying failure-prone factory parts. Every kit we sell gets built, bolted on, and beat on in our own trucks before it ships in yours.

Read the Manifesto
Duramax engine bay being worked on at the L&D Performance Diesel shop in North Carolina
L&D Diesel LLC · NC// Made in USA