Aeromotive 3/8" Quick Connect Sample Valve Kit 17119 - 3/8" Quick Connect Sample Valve Kit. Fits most Ford Modular and GM LS engines. Aeromotive’s Billet Fuel Sample Valve is designed to simplify installation and make fuel checks a snap! Packed with common sense features, it’s simply the best sample valve on the market. Installs into any 1 /8” NPT gauge port. Provides a duplicate 1 /8” NPT port on the valve for installation of fuel pressure gauge or pressure sensor transducer. Sample port is equipped with stainless steel barb fitting for extension hose and rotates 360° for ease of installation and sampling. The “dual action”, spring loaded safety valve keeps the valve sealed when unlocked and rotates into a locked position for racing. When a fuel sample is required, rotate to the unlocked position, press for fuel sample and release, re-lock the valve and go race.