They say that to be successful you must identify a need and satisfy it. Back the early 1970s, 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 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.

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.


Click Here for ARP Installation Instructions.

Click Here for ARP General Torque Specs

Chrysler 5.7L/6.1L/6.2L/6.4L Hemi Head Stud Kit
244-4300
Description: Socket Size(s) 14mm 12pt 10mm 12pt 5mm Allen 3mm Allen More
$519.27
$467.34
$519.27
$467.34
Chrysler 5.7L/6.1L/6.2L/6.4L Hemi Main Stud Kit
244-5400
Description: Socket Size(s) 14mm 12pt 10mm 12pt 5mm Allen 3mm Allen More
$228.31
$205.48
$228.31
$205.48
5.7L / 6.1L / 6.2L / 6.4L Hemi Rod Bolt Kit
247-6302
Description: Socket Size(s) 7/16 12pt More
$216.35
$194.72
$216.35
$194.72
Dodge Hemi 5.7/6.1L/6.2L/6.4L Hemi Head Bolt Kit
147-3901
Description: Socket Size(s) 10mm 12pt 9/16 12pt More
$372.77
$335.49
$372.77
$335.49
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