172 Ph1 Gearbox

[Papalaz]

Hi Guys,
I'm trying to source a 2nd hand gearbox for my 172 Ph1 and am a bit confused by exactly which one I need.
Number on the box is 7700599940 - is this enough to identify it?
I've seen JC5-130, JC5-089, JC5-129 What are these different variations?

Thanks
Joe

 

[deadmau5]

089 is the Ph1 box.

 

[Mini182]

As above JC5-089 is the ph1 box

But JC5-129 has the speedo drive and will also fit. This gears in the 129 box are also a bit closer together.

Probably best getting yours refurbished though, you never know the condition of a second hand box.

 

[Mar172]

You are better off putting a post in the wanted section for one on here