Harland Sharp Original SB Chevy Rocker Arm - 1.6 Ratio - 7/16 Stud 57500BK and installs in the firewall

and installs in the firewall to accept the steering shaft

1957-1957 Oldsmobile

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1982-1986 GMC K2500Fits 1980-1986 GM Buick

Choose conventional hex or compact 12-point style heads

Harland Sharp Original SB Chevy Rocker Arm - 1.6 Ratio - 7/16 Stud 57500BK and installs in the firewallProduct Description: Rocker Arm Original 7 16 in Stud Mount 1. 60 Ratio Full Roller Aluminum Orange Anodized Small Block Chevy Sold Individually Since the 1950s, Harland Sharp is the leader in roller rocker arm technology. Sharp manufactures roller rockers and rocker components for a variety of applications. Their rockers are made from lightweight aluminum and anodized for increased durability.