I have a JDM primary fuel rail that I need to connect a fuel pressure sending unit to. The rail has a 12mmX1.5 female threaded connection and the sending unit has a 1/8NPT male. The closest adapter I have found was on Summit Racing, but it had 1.0, not 1.5 threads, otherwise what I need. Anyone know where I might find the correct adapter? Thanks…

 

They are out there. Just gotta look.

Here are a few examples of conversion fiuttings.

http://www.herbertperformance.com/cg...cat=282&vend=6

 

I have looked. The problem is with finding the right combination. Just like the location above, just about everything I find is for –AN fittings, which are standard, not metric. With the exception of the close one mentioned earlier, everything seems to be metric to –AN or –AN to NPT, but not metric to NPT. Thanks...and I will keep looking.

 

Well, you might have to use 4 adapters!!

I've found:
Aeroquip
12x1.5 male to -06 male

Aeroquip
-6 AN female to 3/8 in. NPT male

www.geminiindia.com
3/8 NPT Female to 1/4 NPT Female

and FINALLY
http://www.visionmedicalinc.com/couplers/pipe.html
1/4 NPT male to 1/8 NPT female

I was REALLY bored so I spent over an hour looking this up

 

Just curious to what you did