ARP

They say that to be successful you must identify a need and satisfy it. Back in 1968 racing enthusiast Gary Holzapfel saw that many of his friends’ broken engines were caused by fastener failure. At the time, there were no commercially available studs and bolts up to the challenge. So Holzapfel called upon his many years of fastener making experience for a leading aerospace subcontractor and founded ARP® (Automotive Racing Products).

In the ensuing years, the firm has grown from what was literally a backyard garage workshop into a highly diversified manufacturer with four operational entities in Southern California with a combined area in excess of 115,000 square feet. These include forging, machining, 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 of thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. 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.

ARP TECH info can be found HERE

ARP Products

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ARP Cam Bolt Kits
Install an ARP cam bolt kit and end your camshaft timing worries ARP quality delivers increased preload clamping force and assures positive timing gear register Includes appropriate fasteners for your ...
ARP Connecting Rod Bolt Kits
ARP manufactures replacement rod bolts for many popular import and domestic Sport Compact engines that are made of premium grade 8740 chrome moly steel and heat treated to a nominal tensile strength o ...
ARP Flywheel Bolt Kits
Flywheel and Flexplate bolts play an important role in the performance and safety of race cars and street machines alike Thats why the fastener experts at ARP have developed special bolts that are far ...
ARP Harmonic Balancer Bolt Kits
As the crankshaft flexes and twists the balancer absorbs incredible amounts of kinetic energy To ensure that the balancer is locked in position ARP has developed these ultra strong 200000 psi bolts th ...
ARP Head Stud/Bolt Kits
ARP HEAD STUD KITSObtaining the optimum cylinder headtoblock sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers nitrou ...
ARP Main Stud/Bolt Kits
ARP Main Studs are manufactured from 8740 chrome moly steel heattreated inhouse to 200000 psi tensile strength and precision Jform threads rolled after heattreat to create a fastener that has thread ...
ARP Pressure Plate Bolt Kits
The importance of pressure plate bolts in a racing or hiperformance street application cannot be emphasized nearly enough These fasteners play a key role in both the performance and safety of a vehicl ...
ARP Ring Gear Bolts Kit
The tremendous shock loads generated at launch by most any drag racing vehicle equipped with todays sticky tire compounds or the acceleration and deceleration of oval track cars put considerable strai ...
ARP Stainless Accessory Studs
ARP has developed an innovative multipurposes accessory stud that can be used for exhaust systems intake manifold and a host of other uses The studs are manufactured from a proprietary alloy developed ...
ARP Wheel Studs
ARPs heattreated 8740 chrome moly wheel studs are a muchneeded replacement for any car engaged in oval track or drag racing competition They have a tensile strength of 190000 psi and are able to easil ...