These adapter fittings are available in 3/8" and 5/16" sizes. They push-on and secure to most modern USA, European, Japanese, etc. fuel injection systems and are used to convert an OEM SAE Quick Connect hard line connection to AN male flares.
To determine the required size, simply measure the outside diameter of the male fitting:
- .375 = 3/8"
- .3125 = 5/16"
IMPORTANT: Always lubricate the mating O-rings with a light amount of oil prior to installing.