TAD520GE; TAD720GE; TAD721GE; TAD722GE Engine Camshaft. Stage 1, Tier 1 TAD520GE Parts on group Camshaft. Stage 1, Tier 1: Pos. Part No Qty Parts name Comments 1. 20893983 [1] Camshaft SN-10763627 1. 21272771 [1] Camshaft SN10763628-11598181 1. 22414661 [1] Camshaft SN11598182- 2. 11700366 [8] Valve 3. 20405534 [8] Push rod Parts catalog : Timing Gear Casing and Gears TAD520GE, TAD720GE, TAD721GE, TAD722GE Flywheel for Flywheel Housing SAE 3 TAD520GE, TAD720GE, TAD721GE, TAD722GE Flywheel (0,87 kgm²) for Flywheel Housing SAE 2&3 TAD520GE, TAD720GE, TAD721GE, TAD722GE Flywheel Housing SAE 3 TAD520GE, TAD720GE, TAD721GE, TAD722GE Flywheel for Flywheel Housing SAE 2 TAD520GE, TAD720GE, TAD721GE, TAD722GE Flywheel Housing SAE 2 TAD520GE, TAD720GE, TAD721GE, TAD722GE Camshaft. Stage 1, Tier 1 TAD720GE Camshaft. Stage 2, Tier 2 TAD520GE Camshaft. Stage 2, Tier 2 TAD720GE, TAD721GE, TAD722GE Crank Mechanism Stage 1, Tier 1 TAD520GE Crank Mechanism Stage 1, Tier 1 TAD720GE Crank Mechanism SN-779906 Stage 2, Tier 2 TAD520GE