Norcal Diesel Performance parts and accessories are engineered for diesel owners who demand more than off‑the‑shelf solutions, combining real‑world testing with OE‑plus fitment you can trust. The Norcal Diesel Performance brand stands out because every component is designed, tested, and validated in‑house by technicians who work on Powerstroke, Duramax, and Cummins engines every day. Nothing is sold unless it meets strict standards for performance and long‑term reliability. The product scope covers critical systems such as fuel injection upgrades, engine wiring harnesses, head gaskets, ARP stud kits, sensors and electrical pigtails, valve cover gaskets, exhaust components, battery cable kits, diesel accessories, and ProDuty OEM+ engine and transmission mount kits. Unlike competitors that rely solely on generic sourcing, Norcal Diesel Performance backs its parts with hands‑on experience, vehicle‑specific engineering, and direct expert support, giving customers confidence that each part is built to solve common diesel failure points and perform under real driving and towing conditions.
Each new generation of engine is more capable than the last, but not every engine that goes out is as powerful as it could be. Even the new L5P Duramax engine needs some extra work if you want to get the most horsepower and torque out of it. At Norcal Diesel Performance, we can help you with our 2020–2021 L5P fuel system parts. We have everything you’ll need to get the most out of this engine.
We have the standard L5P fuel system parts you want, like a rail injection system cleaner, but we also have L5P fuel pump parts. And if you want more out of your fuel, consider some L5P Duramax fuel additives. The engine itself is high-quality, but if you want to take things to the next level, you can work with us at Norcal Diesel Performance!
