So my passenger side oil cool leaks. I have a replacement cooler. I read the the wrench needed to disconnect the hoses from the oil cooler it's self is a 23mm. I got one and it's not even close. The walk to Sears is about a mile. What size do I need before I make that walk again?

 

Seriously??? No one knows this???? I sure someone had to do this when installing R1 coolers on their car.

 

Use an adjustable. That's what I did. I know the one that goes from the driver cooler to the front of the motor is a 15/16".

 

Buy multiple and return what you don't use.

 

1 1/4" for the fitting attach to the cooler.

 

Adjustable wrench for the win