Mercruiser 120hp 140hp 165hp 3.0L 2.5L 4.1 Front Engine Adjustment Bolt Nut Stud Steering Helm Parts This would be an item

This would be an item I would recommend to just try and install it first try and properly adjust the settings

If you are unsure if this will work for you OR YOU NEED TO CONFIRM DIMENSIONS

Mercury 650 65hp - 4cyl (1963-1971)

Piston (Standard / Stock Size Bore): Part Number 389115 / 0389115 (Stamped Casting P/N is 323604)

Mercruiser 120hp 140hp 165hp 3.0L 2.5L 4.1 Front Engine Adjustment Bolt Nut Stud Steering Helm Parts This would be an itemItem Details Used with pretty much all MerCruiser Inline engines (2. 5L 120hp 4cyl, 3. 0L 140hp 4. 1L 165hp inline 6 cylinder) from the mid 80's) (these parts specifically, but the main stud was actually used all the way until the 2000's and you should be able to swap most of these components to the ones from the early 70's. Freshwater Used Part Quick rundown of the parts here: 16 36100T (16 36100T) Main Adjusting Stud 12 36103 Adjusting Stud Washer