1.7 Rocker Ratio Rocker Arm with Bearing Trunnion

The GM Genuine Parts Valve Rocker Arm (part #12681275) is engineered to meet rigorous GM standards for LS engine platforms. Designed as a direct replacement for part number 10214664, this non-adjustable rocker arm features a 1.7 rocker ratio and a bearing trunnion for smooth operation. This rocker arm is suitable for the intake and exhaust positions on LS1, LS2, and LS6 engines with cathedral port cylinder heads. For L92, LS9, and LS3 engines utilizing rectangle port cylinder heads, it fits the exhaust position only. The straight design ensures no offset, simplifying installation. GM Genuine Parts are designed, engineered, and tested to rigorous standards and are backed by General Motors. These parts are specifically validated by GM engineers for Chevrolet, Buick, GMC, or Cadillac vehicles.