TAD520GE; TAD720GE; TAD721GE; TAD722GE Engine Camshaft. Stage 2, Tier 2 TAD520GE Parts on group Camshaft. Stage 2, Tier 2: Pos. Part No Qty Parts name Comments 1. 20550358 [1] Camshaft SN-010211327 1. 20904359 [1] Camshaft SN010211328-010671158 1. 21264838 [1] Camshaft SN10671159-11598494 1. 22414664 [1] Camshaft SN11598495- 2. 11700366 [8] Valve 3. 20405534 [8] Push rod Parts catalog : Camshaft. Stage 1, Tier 1 TAD720GE Camshaft. Stage 1, Tier 1 TAD520GE 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 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 Crank Mechanism SN779907- Stage 2, Tier 2 TAD520GE Crank Mechanism SN-779906 Stage 2, Tier 2 TAD720GE