We just made it a whole lot easier to install a fuel pressure sensor in Chevy GM cars and trucks with an LS engine and an electronic fuel pressure test port. Check out the latest addition to the GlowShift lineup with this GM Fuel Rail Schrader Valve Adapter.

If you have an LS1, LS2, LS3, LS6, LS7, LS9 or LSA multiport fuel injected engine that has a Schrader valve on the fuel rail, this GM fuel rail adapter is key to saving time during installation and avoiding major modifications. Easily gain access to fuel pressure readouts and sidestep a lot of the hassles that come with a longer install.

Our main goal was to update the current fitting we have in stock and build an adapter where you didn’t have to remove the Schrader valve in the process. With this GM fuel rail pressure gauge adapter there’s an adjustable height pin to depress the Schrader valve, so you don’t have to worry about removing it.

Each GM fuel rail adapter has a -4 AN thread size on one end and a 1/8” female thread on the other for a direct-mount fuel pressure gauge or fuel pressure sending unit. There’s also a 1/8" NPT Female to Male 90 Degree Elbow to get just the right positioning during installation.

GlowShift fittings are manufactured using premium quality materials to make sure they’re durable and reliable. Take fuel pressure readings in a matter of no time and make sure your Chevy GM LS car or truck’s fuel pressure levels are exactly where they should be without any unusual spikes or dips.

Installation instructions are included that walk you through step by step. Plus you can reach out anytime if you have questions about our -4 AN GM Fuel Rail Schrader Valve Adapter and we’ll be happy to help. When you go with us, unrivaled Custom Support and Free Lifetime Tech Support come standard.