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ARP Bolts Head Stud Kit for Land Rover V8 3.9L-4.6L with 10 Bolt Heads, 8740 Chromoly

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Model#157-4301
ManufacturerARP Bolts

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ARP 157-4301 Head Stud Kit

The ARP 157-4301 head stud kit is engineered for those seeking reliability and strength in their Land Rover's V8 engine. Constructed from premium 8740 chromoly steel, these head studs are designed to withstand the rigors of high-performance applications while providing superior clamping force.

Key Features

Fastener Style: Stud
Undercut Stud: No
Head Style: 12-point
Fastener Material: 8740 chromoly
Fastener Finish: Black oxide
Washers Included: Yes
Cut to Fit: No

Fitment

The ARP 157-4301 head stud kit is compatible with the following Land Rover models equipped with the 3.9L-4.6L V8 engine and 10 bolt heads:

Land Rover Defender 90 (1994-1995 & 1997)
Land Rover Discovery (1994-2004)
Land Rover Range Rover (1989-2002 & 2006-2009)
Land Rover Range Rover Sport (2006-2009)

Installation Notes

When installing the ARP head studs, ensure to follow the manufacturer's torque specifications for optimal performance. The black oxide finish provides enhanced corrosion resistance, making these studs suitable for both on-road and off-road applications.

This head stud kit is a crucial upgrade for those looking to enhance engine reliability and performance in their Land Rover V8. With the right installation, these studs will contribute to a solid and durable engine assembly.

Other Part Numbers:
ARP Bolts #arp157-4301

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Make Vehicle	Model	Year
1994-1995, 1997 Land Rover Defender 90	Defender 90	1994-1995, 1997
1994-2004 Land Rover Discovery	Discovery	1994-2004
1989-2002, 2006-2009 Land Rover Range Rover	Range Rover	1989-2002, 2006-2009
2006-2009 Land Rover Range Rover Sport	Range Rover Sport	2006-2009

The Story Behind ARP Bolts

ARP (Automotive Racing Products) was founded by Gary Holzapfel in 1968 when he noticed his drag-racing friends succumbing to bolt-induced engine failure as a result of poor-quality fasteners. He drew upon his expertise in the aerospace industry to develop a solution, which turned into a successful business nonetheless.

Since its inception, ARP has been engineering and perfecting a wide range of bolts, studs, nuts, and other fasteners for engines, cylinder heads, headers, wheels, and transmissions. Today, ARP remains the undisputed world leader in automotive fasteners. Racing aficionados everywhere know and recognize the ARP brand and can vouch for its quality.

What Makes ARP Bolts So Special?

Located in Ventura, California, all ARP processes from raw wire to finished fasteners are conducted in-house, right here in the USA. The company continually improves its processes with strict quality control guidelines and is dedicated to producing products that are second to none. Simply put, ARP Bolts are better than the competition because of their quality materials and advanced processes.

ARP prides itself on using only top-quality materials that are above the usual “aerospace-grade” quality that other manufacturers settle for. For example, while 8740 Chromoly steel has four different grades, ARP only uses the top two, SDF and CHQ. These grades cost twice as much as the lower commercial and aircraft grades, but deliver “zero defect” quality that you can trust each and every time.

ARP Bolts are built to withstand serious racing, possess greater tensile strengths, and can survive higher stress levels than most aircraft fasteners. ARP is dedicated to creating fasteners that boast ultimate strength and durability to ensure they last race after race. Its product lineup ranges from quality high-performance OEM parts to exotic specialty hardware for IndyCar, NASCAR, NHRA drag racing, Formula 1, and even marine applications.

Equip Your Ride with ARP Bolts at Vivid Racing

If you are looking to change the fasteners on your car, you’ve come to the right place. No other brand beats out ARP Bolts in terms of strength, quality, and race-proven success. Vivid Racing is, therefore, proud to carry an extensive lineup of products from American Racing Products like bolts, fluids, sealants, hand tools, stud kits, piston sleeves, wheel bolts, and more! If you have any questions regarding the parts above, please call our specialized sales team at (480) 966-3040.