O.S Engines outer head for the following OS Engines:
11370 .12 TZ TURBO
11371 .12 TZ(S)-T TURBO
11373 .12TZ(P)-T 3 PORT TURB
Can also be used on 11375 .12TZ(P)-T 5 PORT TURBO
Constructed of blue anodized aluminum. Nine cooling fin design with four bolt mounting hole design.