11 173-3439 [1] HEAD GP. 3 173-3472 [1] PISTON AS. 8 177-2584 [1] PISTON. 25 7Y-4267 [2] VALVE. 2 173-3444 [1] PLATE. 4 173-3443 [1] PLATE. 16 173-3451 [3] PLATE. 17 173-3450 [3] PLATE.