ARP® 471-9501 - Engine and Accessory Bolt Kit

Engine and Accessory Bolt Kit by ARP®. Far superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly steel, all ARP main bolts feature a reduced wrenching head, large underhead radius and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating. The popular High Performance Series is rated at 180,000 psi, and is a premium replacement for OEM fasteners. Pro Series main bolts are application-specific, rated at 200,000 psi, and designed for use in competition engines. Hardened parallel-ground washers are included with each kit. Far superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly steel, all ARP main bolts feature a reduced wrenching head, large underhead radius and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating. The popular High Performance Series is rated at 180,000 psi, and is a premium replacement for OEM fasteners. Pro Series main bolts are application-specific, rated at 200,000 psi, and designed for use in competition engines. Hardened parallel-ground washers are included with each kit

Specifications

Features

• Designed and manufactured using innovative technologies
• Made with maximum safety and reliability in mind
• Expected to provide seamless service for years

ARP® was established back in 1968 by Gary Holzapfel who was passionate about creating reliable fasteners for the automotive industry. The company's dedication to total customer satisfaction has allowed it to grow from a garage workshop into a leading source for high quality fastening solutions. Today with five operational entities located in Southern California and a combined area of more than 200,000 square feet, ARP stands ready to provide customers with virtually every fastener found in an engine and driveline. The brand's product list ranges from high performance OEM replacement parts to specialty hardware for racing and marine applications.