Mercury Kiekhaefer Outboard Mark 30 Lower Bottom Cowl Cowling Assy. 153-1149A1 Flywheel Housing This is the powerhead assembly

This is the powerhead assembly for this outboard

& Mercury 6hp "60-4" models

This design was replaced with 76351A1 which was nearly identical but did not have this metal insert tube

The Part Number of Side upper shock Mount is  F307962

This list encompasses the outboards from that time period

Mercury Kiekhaefer Outboard Mark 30 Lower Bottom Cowl Cowling Assy. 153-1149A1 Flywheel Housing This is the powerhead assemblyThis is Off a Mercury 1956 Mark 30 1 4 cylinder Turbo Four (serial # 994104) May work with 1957 or 1958 Item Condition: Good Condition Please inspect Pictures for condition This is for Remote control outboards, but could be converted back. Part#'s Bottom Cowl Assembly: 153 1149A1 (May be compatible with 153 1150A1) This was for Mark 30E models remote throttle lever: 25869 Cross Shaft: 25868 Throttle drum: 25465 Cross shaft lever: 25865 Cross shaft