SG Tool Aid37650 General Motors Inline Adapter

This adapter is designed to temporarily replace the inline fuel filter for test purposes. It worked for that but the test port leaked. I was able to complete the fuel pressure test.

This in-line adapter is perfect for testing GM throttle body injection systems lacking a fuel pressure test port. The adapter measures 4.25" long - matching an AC Delco GF-481 / GF-652 fuel filter. The tool is made of heavy wall thickness steel and plated for protection. It uses a standard size (AC type) schrader valve.

Hey - this thing worked perfectly to replace my fuel filter on my 1992 Chevy Suburban (had since it was new). NO LEAKS. I then tested the pressure with the Actron CP7838 Professional Fuel Pressure Tester purchased also on Amazon... I had 14 psi... Hope the pressure gauge was correct... :)

Fits perfectly in place of the inline fuel filter and makes checking the fuel pump pressure very easy.

Did what it was suppose to do

Used this to hook up a fuel pressure gauge to diagnose a suspected fuel delivery problem on my 95 Chevy K2500 p/u truck 4wd 5.7l TBI. There is no factory provision on this vehicle to measure fuel pressure and since all the fuel lines that are easy to access are hard pipe that is firmly strapped down replacing the fuel filter temporarily with this adapter was quick and easy. I had read other reviews on it before buying and did not have any of the leakage that others had reported. There is one thing about it I wish had been different. The Schrader valve is mounted dead center on the pipe. On my vehicle that places it exactly in the middle of the bracket that secures the fuel filter and that blocks access to the Schrader. That makes it necessary to remove the two bracket screws to slide the bracket over just a little. If the Schrader was mounted just a 1/4 inch either side of center i'd give it a five star rating. Still its a good tool exactly what was needed got the job done.

I put fuel safe thread sealant on the brass fitting to make sure the brass fitting didn't leak like I read about. However, the schrader valve leaked. Not something to just leave on. Just test your psi and take it back off.

Tbi owners need this to check the fuel pressure without all the hassles of messing behind the throttle body , save time and money , if you only use it once you saved yourself money

It does exactly what it advertises but is quite expensive for what it is. Mine had some debris inside of it which is bad because it REPLACES YOUR FILTER!! Definitely clean it first, don't wanna send any debris to your injectors. Also don't run the vehicle for too long with this installed so that nothing from your tank gets sucked up into your injectors.