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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

ARP M12x1.25 Replacement 12pt Nut for CA625(one nut)

$5.18
ARPAUN12-5A
ARP Under 100
ARP M12x1.25 Replacement 12pt Nut for CA625(one nut)
New
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ARP

ARP M12 x 1.25/1.75 x 43.90 ARP2000 Stud

$16.48
ARPAU4.900-2UB
ARP Engine Components Hardware - Singles Under 100
ARP M12 x 1.25/1.75 x 43.90 ARP2000 Stud
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ARP

ARP M12 x 1.25/1.75 x 4.600in OAL Stud

$7.94
ARPAU4.600-1LB
ARP Engine Components Hardware - Singles Under 100
ARP M12 x 1.25/1.75 x 4.600in OAL Stud
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ARP

ARP 3/8-24 x 1.600in ARP2000 12-Point Connecting Rod Bolts - 12 Pack

$119.92
ARP200-6229
ARP Engine Components Rod Bolt Kits
ARP 3/8-24 x 1.600in ARP2000 12-Point Connecting Rod Bolts - 12 Pack
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ARP

ARP M11 x 1.25 x 7/16-20 CA625+ Stud

$51.35
ARPATP7.700-10LUGB
ARP Engine Components Hardware - Singles Under 100
ARP M11 x 1.25 x 7/16-20 CA625+ Stud
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ARP

ARP 3/8-16 x 3.250in UHL C450 Stainless Hex Bolt (Single)

$4.46
ARPH3AJ3.250-12CL
ARP Engine Components Hardware - Singles Under 100
ARP 3/8-16 x 3.250in UHL C450 Stainless Hex Bolt (Single)
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ARP

ARP 1/4-28 SS Flanged Hex Nut Kit

$0.73
ARP400-8609
ARP Engine Components Hardware Kits - Other Under 100
ARP 1/4-28 SS Flanged Hex Nut Kit
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ARP

ARP 11/32-24 Hex Nut Kit

$1.29
ARP200-8623
ARP Engine Components Hardware Kits - Other Under 100
ARP 11/32-24 Hex Nut Kit
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ARP

ARP 5/16-18 SS Hex Nut Kit

$0.63
ARP401-8304
ARP Engine Components Hardware Kits - Other Under 100
ARP 5/16-18 SS Hex Nut Kit
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ARP

ARP M10ID .750OD SS Chamfer Washers

$12.27
ARP400-8521
ARP Engine Components Hardware Kits - Other Under 100
ARP M10ID .750OD SS Chamfer Washers
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ARP

ARP 5/16-24 SS Flanged Hex Nut Kit

$0.95
ARP400-8610
ARP Engine Components Hardware Kits - Other Under 100
ARP 5/16-24 SS Flanged Hex Nut Kit
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ARP

ARP Polaris 900cc/1000cc RZR Main Bolt Kit

$111.53
ARP188-5001
ARP Engine Components Main Stud & Bolt Kits
ARP Polaris 900cc/1000cc RZR Main Bolt Kit
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