ARP Square Drive Balancer Bolts This special version of ARP's 200,000 psi rated balancer bolt can except a standard 1/2" drive racket or breaker bar to facilitate rotating the crank. Made from heat-treated 8740 chrome moly steel with heavy duty black oxide finish.
Part Type: Square Drive Balancer Bolts Application: Chevrolet Big Block Crankshaft Material: Steel Manufacturer: Automotive Racing Products (ARP) Manufacturer's Part Number: 135-2503 Warranty: Sold without warranty, expressed or implied Quantity: Sold as Each
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