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ARP

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.

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ARP 1/2-20 x 1.25 Hex Black Oxide Bolts (5/pkg) Quick View
ARP

ARP 1/2-20 x 1.25 Hex Black Oxide Bolts (5/pkg)

$18.38
ARP716-1250
ARP Bolts Engine Components Hardware Kits - Other Under 100
ARP 1/2-20 x 1.25 Hex Black Oxide Bolts (5/pkg)
ARP 7/16-20 Hex Nut Kit Quick View
ARP

ARP 7/16-20 Hex Nut Kit

$4.12
ARP200-8626
ARP Engine Components Hardware Kits - Other Under 100
ARP 7/16-20 Hex Nut Kit
Quick View
ARP

ARP Replacement 3/8 x 1.500 OAL Broached Stud

$3.48
ARPAJ1.500-5B
ARP Engine Components Hardware - Singles Under 100
ARP Replacement 3/8 x 1.500 OAL Broached Stud
ARP 1/2-20 x 1.500 12pt SS Bolts (5/pkg) Quick View
ARP

ARP 1/2-20 x 1.500 12pt SS Bolts (5/pkg)

$33.76
ARP755-1500
ARP Bolts Engine Components Hardware Kits - Other Under 100
ARP 1/2-20 x 1.500 12pt SS Bolts (5/pkg)
ARP 1/2in - 13 x 4.750in 12pt Black Oxide Bolts (5/pkg) Quick View
ARP

ARP 1/2in - 13 x 4.750in 12pt Black Oxide Bolts (5/pkg)

$34.25
ARP627-4750
ARP Bolts Engine Components Hardware Kits - Other Under 100
ARP 1/2in - 13 x 4.750in 12pt Black Oxide Bolts (5/pkg)
ARP 3/8 in.-16 RH Thread, 2.750 in 12 Point SS 300 Bolts - Set of 5 Quick View
ARP

ARP 3/8 in.-16 RH Thread, 2.750 in 12 Point SS 300 Bolts - Set of 5

$29.44
ARP615-2750
ARP Bolts Engine Components Main Stud & Bolt Kits Under 100
ARP 3/8 in.-16 RH Thread, 2.750 in 12 Point SS 300 Bolts - Set of 5
Quick View
ARP

ARP M9 x 1.0 12pt Nut - Single

$9.26
ARP301-6014
ARP Engine Components Hardware Kits - Other Under 100
ARP M9 x 1.0 12pt Nut - Single
ARP 5/16 in.-24 RH Thread, 3.000 in Hex Head SS 300 Bolts - Set of 5 Quick View
ARP

ARP 5/16 in.-24 RH Thread, 3.000 in Hex Head SS 300 Bolts - Set of 5

$24.02
ARP722-3000
ARP Engine Components Hardware Kits - Other Main Stud & Bolt Kits Under 100
ARP 5/16 in.-24 RH Thread, 3.000 in Hex Head SS 300 Bolts - Set of 5
ARP 1/4-28 12pt nut kit Quick View
ARP

ARP 1/4-28 12pt nut kit

$3.26
ARP300-8320
ARP Engine Components Hardware Kits - Other Under 100
ARP 1/4-28 12pt nut kit
ARP M12 x 1.50 x 50 Black Oxide Hex Bolts (5/pkg) Quick View
ARP

ARP M12 x 1.50 x 50 Black Oxide Hex Bolts (5/pkg)

$24.57
ARP664-1006
ARP Bolts Engine Components Hardware Kits - Other Under 100
ARP M12 x 1.50 x 50 Black Oxide Hex Bolts (5/pkg)
ARP 5/16in - 24 x 2.500in 12pt Black Oxide Bolts (5/pkg) Quick View
ARP

ARP 5/16in - 24 x 2.500in 12pt Black Oxide Bolts (5/pkg)

$16.68
ARP741-2500
ARP Bolts Engine Components Hardware Kits - Other Under 100
ARP 5/16in - 24 x 2.500in 12pt Black Oxide Bolts (5/pkg)
Quick View
ARP

ARP M10 X 1.25/1.50 X 3.475in. UHL Stud

$5.89
ARPAM3.475-1B
ARP Engine Components Hardware - Singles Under 100
ARP M10 X 1.25/1.50 X 3.475in. UHL Stud
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