#3 Female Swivel to 1/8mpt Fitting

The #3 Female Swivel to 1/8mpt Fitting from FRAGOLA (SKU FRG499303) is a precision AN-to-NPT hydraulic and fuel system adapter engineered for builders who demand reliability in custom automotive plumbing. Whether you're assembling a high-performance fuel system, upgrading brake lines, or fabricating custom fluid delivery on a race engine, this straight adapter bridges the gap between AN fittings and standard NPT ports commonly found on factory blocks, aftermarket fuel pumps, and accessory manifolds. Built for serious enthusiasts who refuse compromises in flow integrity or leak-free operation, this fitting serves as a critical junction point in modern engine modifications.

Machined from aluminum and finished in blue anodize, the #3 Female Swivel to 1/8mpt Fitting combines lightweight construction with corrosion resistance essential for engine bays and fuel cell environments. The swivel design at the female AN end eliminates rotational stress during installation—a critical feature when connecting rigid hose lines under pressure. The 1/8 inch NPT male thread on the opposite end threads directly into factory or aftermarket ports without adapters, reducing connection count and potential leak points. This straight geometry ensures laminar flow with minimal turbulence, protecting fuel quality and hydraulic system stability during sustained high-RPM operation or sustained boost cycles.

Custom builders favor this adapter for fuel injection systems, nitrous oxide supply lines, and brake proportioning valve upgrades where NPT bosses meet modern AN hose standards. Its compact footprint—measuring 4 inches in length and weighing just 0.02 pounds—fits tight engine bay configurations without sacrificing accessibility for future service. Installation requires only a wrench on the #3 AN swivel and a socket or wrench on the NPT male end; thread sealant on the NPT side ensures a dry, permanent seal. For anyone upgrading fuel systems, plumbing auxiliary functions, or converting older carbureted engine bays to modern EFI standards, this FRAGOLA fitting delivers the durability and precision expected in professional motorsports applications.