2G Greddy radiator adapter for coolant temp gauge

[bmw335ikt]

Hey everyone I'm looking to buy the greddy radiator adapter so I can use aem coolant temp gauge.

Here's the link
http://www.greddy.com/products/electronics/gauge-accessories/filter:model:Radiator Hose/

It comes with different sizes 30mm, 32mm, 34mm, 36mm, 38mm, and 40mm

Just seeing if any one has used one and which size they used. Thanks idk if they measure the o.d or the i.d of the radiator hose
I just read that is says the diameter of the inner hose

Thanks

 

[iceguru1114]

I don't know what size hose you need, but I've used something similar in a different application and it worked out pretty well. The sizing is a little tricky. Automotive industry standard is for tube sizes (the hard parts that have barbs), to be measured by OD, while flexible hose is usually measured by ID (this ensures you can order the same size for both male and female part and everything still fits). However, aftermarket suppliers don't always follow these rules. Best bet is to remove a radiator hose, measure your ID, and call GReddy to ensure you order the right part.