Diesel Performance Converters (DPC) is a leading manufacturer of high-performance torque converters engineered specifically for diesel trucks running Cummins, Duramax, and Powerstroke engines. Known for their precision craftsmanship and commitment to durability, DPC converters are built to handle the extreme demands of towing, racing, and heavy-duty daily driving. What sets DPC apart from other brands is its use of billet components, multi-disc clutch systems, and custom-built configurations tailored to your truck’s exact needs, ensuring maximum power transfer and long-lasting reliability.
If your truck is experiencing symptoms like slipping gears, delayed acceleration, shuddering at low speeds, or excessive heat, it may be time to replace your torque converter. These are common signs of a failing converter that can lead to more serious transmission issues if left unchecked.
At Norcal Diesel Performance, we proudly offer DPC torque converters and provide professional installation services for XDP (Xtreme Diesel Performance) products at our shop in Orangevale, CA. Whether you're upgrading for performance or replacing a worn-out component, our team is here to help you get the most out of your diesel truck.

Diesel Performance Converters is a torque converter production shop. All of our converters are built on site and to the specific needs and applications of each customer. We have several converters in high horse power trucks, including our own Pro Street race truck, proving the our product’s strength and reliability. We offer a converter with the most clutch surface area, coupled with one of the largest billet input shafts on the market. We take great pride in warranty, customer service, and a 24-hour turn around time.

DPC offers converters for Dodge, Allison, and Fords. Single disk, triple disk, and custom four and five disks are available. We offer a lifetime warranty, upon registration, on a standard triple disk converter only to the original owner. Standard warranty on all other converters is 2 years. We enjoy working with all of our haulers, racers, sled pullers, and daily driver customers to provide them with the best converters on the market.
Explore our extensive range of high-quality parts for the 2001-2004 GM 6.6L LB7 Duramax Diesel. Each sub-category is curated to ensure you find the best components for your truck. Our 6.6L LB7 Air Intakes & Accessories are designed to enhance airflow and boost engine performance. The 6.6L LB7 Exhaust Parts offer superior durability and optimal exhaust flow, ensuring your engine runs smoothly. For those looking to maximize power, our 6.6L LB7 Programmers & Tuners provide cutting-edge technology to fine-tune your engine's performance. Additionally, our 6.6L LB7 Fuel System Parts are crafted to deliver reliable fuel delivery and efficiency. Browse through these sub-categories and invest in LB7 parts that promise longevity and top performance. Shop now and experience the difference in quality and reliability.