Norcal Diesel Performance proudly offers ARP (Automotive Racing Products), the gold standard in high-performance fasteners for diesel engines and beyond. Since 1968, ARP has been at the forefront of innovation, engineering premium bolts, studs, and hardware designed to handle extreme stress and deliver unmatched reliability. Their product lineup includes head stud kits, main studs, and harmonic balancer bolts, all crafted with aerospace-grade materials and precision manufacturing.
Manufactured in Southern California, ARP fasteners are rigorously tested to ensure they meet the highest standards of strength and durability. Whether you’re upgrading your Cummins, Duramax, or Powerstroke engine for towing, racing, or daily driving, Norcal Diesel Performance provides the trusted ARP components you need to maximize performance and dependability. Explore our selection today!
In the ensuing years, the firm has grown from what was literally a backyard garage workshop into a highly diversified manufacturer with seven operational entities in Southern California with a combined area in excess of 200,000 square feet. These include forging, heat-treating, machining, quality control finishing and packaging/warehousing facilities in Santa Paula and Ventura, California.
There is even a unique racing-themed restaurant at the main Santa Paula facility - called "Hozy's Grill" - which is open to the public.
Today, ARP’s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.
Diesel engine parts play a critical role in the successful operation of diesel engines. These components include fuel injectors and nozzles, valves, connecting rods, cylinder heads, pistons and rings, crankshafts and camshafts, gaskets, turbochargers and filters. Each component must be of the highest quality to ensure maximum performance and longevity. The fuel injection system components are responsible for delivering the correct amount of fuel into the cylinders at exactly the right moment during the combustion cycle. Valves regulate the flow of air-fuel mixture while connecting rods connect the piston to the crankshaft to transfer energy from combustion back into motion. Cylinder head gaskets help seal in pressure created during combustion while pistons create a tight seal within each cylinder for efficient burning. Gaskets form an air-tight seal between engine components allowing for optimal performance with minimal leakages. Finally, turbochargers increase engine power by improving exhaust gas velocity and filtration systems protect internal mechanisms from dirt and other debris helping keep engines running cleanly and efficiently over time.
