Boat Destroyer Style Steering Wheel Stainless Steel Tube 6-Spoke Chrome 14-7/8" Brackets Braces Levers Linkages These are the later style

These are the later style pistons that do have the valve relief notch cut into them

Rochester 17061829 (on the carburetor body)

Part #'s Included Head Bolts: 306424 0306424

Mercury 90hp (900) - 6cyl (1978-1986) WMK-23 / WMK-27 / WMK-30 / WMK-35 / WMK-39

Boat Destroyer Style Steering Wheel Stainless Steel Tube 6-Spoke Chrome 14-7/8" Brackets Braces Levers Linkages These are the later styleSteering Wheel Details Overall Diameter Roughly 14 7 8" inches (see pictures) Overall Height (Rough Dish Height) 3 3 4" inches Helm Hub Style Mounting Type Standard 3 4" Keyed & Tapered Shaft Other Details Teak Center Cap This could be used with any MerCruiser Alpha One Sterndrive OMC Stringer & Cobra Johnson, Evinrude Outboard Mercury, Mariner, Force etc. application using this style of hub mounting to the helm. Pictures will give best idea of