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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 8740 Chromoly Black Oxide 12pt Head 1/2-20 in x 3.50in Bolt Kit Quick View
ARP

ARP 8740 Chromoly Black Oxide 12pt Head 1/2-20 in x 3.50in Bolt Kit

$29.96
ARP726-3500
ARP Bolts Engine Components Head Stud & Bolt Kits Head Stud & Bolt Kits Under 100
ARP 8740 Chromoly Black Oxide 12pt Head 1/2-20 in x 3.50in Bolt Kit
ARP 7/16-20 x 1.750 Hex SS Bolts (5/pkg) Quick View
ARP

ARP 7/16-20 x 1.750 Hex SS Bolts (5/pkg)

$28.85
ARP724-1750
ARP Bolts Engine Components Hardware Kits - Other Hardware Kits - Other Under 100
ARP 7/16-20 x 1.750 Hex SS Bolts (5/pkg)
Quick View
ARP

ARP M9-1.0 X M9-1.25 4.060in OAL STUD

$10.08
ARPAI4.060-1B
ARP Engine Components Hardware - Singles Under 100
ARP M9-1.0 X M9-1.25 4.060in OAL STUD
ARP 1/2in -20 x 1.750 12pt Black Oxide Bolts (5/pkg) Quick View
ARP

ARP 1/2in -20 x 1.750 12pt Black Oxide Bolts (5/pkg)

$22.97
ARP726-1750
ARP Bolts Engine Components Hardware Kits - Other Hardware Kits - Other Under 100
ARP 1/2in -20 x 1.750 12pt Black Oxide Bolts (5/pkg)
ARP M8 x 1.25 x 40 12pt Black Oxide Bolts (5/pkg) Quick View
ARP

ARP M8 x 1.25 x 40 12pt Black Oxide Bolts (5/pkg)

$19.56
ARP671-1005
ARP Bolts Engine Components Hardware Kits - Other Hardware Kits - Other Under 100
ARP M8 x 1.25 x 40 12pt Black Oxide Bolts (5/pkg)
ARP 5/16-24 SS Fine Nyloc Hex Nut Kit Quick View
ARP

ARP 5/16-24 SS Fine Nyloc Hex Nut Kit

$3.98
ARP400-8762
ARP Engine Components Hardware Kits - Other Hardware Kits - Other Under 100
ARP 5/16-24 SS Fine Nyloc Hex Nut Kit
ARP BBC Dart Big M 4-bolt Cast Iron Caps Main Stud Kit Quick View
ARP

ARP BBC Dart Big M 4-bolt Cast Iron Caps Main Stud Kit

$132.85
ARP235-5601
ARP Engine Components Main Stud & Bolt Kits
ARP BBC Dart Big M 4-bolt Cast Iron Caps Main Stud Kit
ARP Porsche 996 Head Stud Kit Quick View
ARP

ARP Porsche 996 Head Stud Kit

$973.11
ARP204-4210
ARP Engine Components Head Stud & Bolt Kits Head Stud & Bolt Kits Porsche 911 Porsche 911
ARP Porsche 996 Head Stud KitThis Part Fits: Year Make Model Submodel 2002-2005 Porsche 911 GT2
ARP Ford 351W w/ Edelbrock RPM Air Gap 12pt Intake Manifold Bolt Kit Quick View
ARP

ARP Ford 351W w/ Edelbrock RPM Air Gap 12pt Intake Manifold Bolt Kit

$42.06
ARP154-2105
ARP Engine Components Hardware Kits - Other Hardware Kits - Other Under 100
ARP Ford 351W w/ Edelbrock RPM Air Gap 12pt Intake Manifold Bolt Kit
ARP Toyota 3.8L 6cyl F Head Stud Kit Quick View
ARP

ARP Toyota 3.8L 6cyl F Head Stud Kit

$203.44
ARP203-4001
ARP Engine Components Head Stud & Bolt Kits Head Stud & Bolt Kits
ARP Toyota 3.8L 6cyl F Head Stud Kit
ARP 1/4-28 Hex Nut Kit (Pack of 10) Quick View
ARP

ARP 1/4-28 Hex Nut Kit (Pack of 10)

$16.29
ARP200-8631
ARP Engine Components Hardware Kits - Other Hardware Kits - Other Under 100
ARP 1/4-28 Hex Nut Kit (Pack of 10)
ARP AN-16 Female Aluminum Weld Bung Quick View
ARP

ARP AN-16 Female Aluminum Weld Bung

$15.30
ARP800-8116
ARP Bungs Bungs Fabrication Under 100
ARP AN-16 Female Aluminum Weld Bung
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