With California emissions. MLS head gasket. Use new head bolts.
2.0L / 121 DOHC L4 16V "2,N" Duratec Nat. Asp. 87.50mm Bore 05-17
FORD
2.3L / 2261 DOHC L4 16V Natural Asp. 87.50mm Bore 01-10
MAZDA
FO122C | 2.0L / 121 DOHC L4 16V "2,N" Duratec Nat. Asp. 87.50mm Bore 05-17
FORD
MA2261T | 2.3L / 2261 DOHC L4 16V Natural Asp. 87.50mm Bore 01-10
MAZDA