Hi!

Does anybody know the thread size on the INLET of the fuel pump on Sierra Cos 4x4?

 

push-on hose on standard pump is approx 16mm internal diameter

inlet thread on 044 pump is M18 x 1.5

 

I'm going to use AN-fittings. What fitting will fit in the fuel pump then..?

 

You need to specify whether or not you have a standard fuel pump or an 044 motorsport pump, or other type.

The standard pump only had a thread on the outlet side. The 044 motorsport pump has a thread on both ends, and they are different sizes.

 

He have 2 standar pumps

 

My standard pump on a 2wd cossie has a non threaded inlet. I think this is the same for a 4wd.

As stated above, the standard pump's inlet uses a push on type hose fitting which fits approximately 16mm ID (internal diameter) hose and uses a hose clip to hold it on.

I would suggest replacing any original equipment flexible fuel hoses on a Cossie as old ones tend to perish and can leak posing a fire hazard.

Especially true on the 2wd Cossies for the fuel line between the fuel rail and the fuel pressure regulator.