MerCruiser 65534A2 65534 Gimbal Ring Transom Assembly Splined-Splined 1975-1977 Pulley - Water Pump The gear set here is

The gear set here is MerCruiser 43-55766 / 43-55778 > 43-55778A3 (Also Equivalent to 43-55766A2 / 43-55766A3 / Sierra 18-2205)

All of the other ones look much different

Engine configuration does not matter

3L part years

MerCruiser 65534A2 65534 Gimbal Ring Transom Assembly Splined-Splined 1975-1977 Pulley - Water Pump The gear set here isItem Details 65534A2 MerCruiser Splined Splined Gimbal Ring Assembly Stamped 65534 Replaced by 77124A2 which was an updated version that has grease fittings for the hinge pins, but other than that they are pretty much identical castings. Not compatible with the square style steering gimbal rings Also only used with the style that HAS trim senders and HAS threaded bell housing pins Could probably use a new roller bearing in the bottom but the splines