Parts list: № Number Qty Name Options Next page: PICT-490.3 490 Valve Actuating Mechanism PICT-490.1 490 Valve Actuating Mechanism ST619636 4901 (ROCKER ARM / SHAFT / TAPPET / PUSH ROD) ST865406 4928 Value Actuating Mechanism ST619638 4903 (ROCKER ARM / SHAFT / TAPPET / PUSH ROD)