Mercury Kiekhaefer Outboard 20038 Pressure Valve Cover Mark 50 40 20 15 KG9 KF9 Pulley This part goes from the

This part goes from the top of the y-tube to the bottom of the 3" to 4" tube elbow

Also looks like one of the ends was replaced at some point

but looks like it was rebuilt with permatex at some point

I know 43-24437 was a 22-tooth gear that was for single-cylinder WD3 applications that looks significantly different than this one

They made all sorts of revisions to these outboards over quite a number of years

Mercury Kiekhaefer Outboard 20038 Pressure Valve Cover Mark 50 40 20 15 KG9 KF9 Pulley This part goes from theItem Description Mercury Part Number 20038 Cast Pressure Valve Cover (possibly also the same as 25833), used on Mark 50, 50E, 20, 15, 20H, KH7, WG7, 40, KG9, KF9 (and possibly others). Purchase with confidence! General Disclaimer (please read) These are New Old Stock Parts from a large mercury Mark & K models cabinet I have. Some of these parts might work on more models than listed in the title and or the description, Please do your own research There