The RaceWorks AN-4 Female ORB Aluminium Weld On Fitting – RWF-990-04-A is a precision component designed for fabricators and performance enthusiasts building custom fluid systems. Featuring a female AN-4 ORB (O-Ring Boss) thread, this weld-on fitting allows for leak-free connections in fuel tanks, oil pans, catch cans, or any alloy fluid reservoir. Constructed from high-quality aluminium, it provides excellent weld ability, corrosion resistance, and long-term durability under high-pressure conditions.

Part number: RWF-990-04-A