90* Oil filter adapter...bolt

[dusterdoug]

Forgive me for such a question, but...

What is the wrench size on this bolt?? 1 1/8” is too small, 1 1/4” is too big.

I don’t have metrics that big, but it couldn’t be. Could it??

Thanks in advance.

 

[AUSA66]

In the middle 1 3/16"

 

[harrisonm]

Halfway between 1-1/4 and 1-1/8 is 1-3/16 or 30.95625mm which I will round to 31mm.

 

[dusterdoug]

THANK YOU!!!

 

[diymirage]

Be sure to place a big Cresent wrench on the adapter while you torque down the center bolt

That keeps the adapter from moving and tearing the gasket