Mercruiser 120hp 140hp 165hp 3.0L 2.5L 4.1 Front Engine Adjustment Bolt Nut Stud Steering Helm Parts This is for the Design-II

This is for the Design-II coil

but functional and rubber is in good shape yet)

It has quite a few dents and it appears to have been sand-blasted at some point

Stamped Zenith B175-61 (MerCruiser 74000 which replaces 70144)

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 is for the Design-IIItem 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