1/4 x 3/4 Pipe Reducer Bushing Black

The 1/4 x 3/4 Pipe Reducer Bushing Black by Fragola is an essential hydraulic and fuel line adapter for serious automotive builders and mechanics tackling custom cooling systems, fuel delivery upgrades, or brake line routing on high-performance platforms. This reducer bushing solves a common plumbing challenge: connecting two different port sizes within tight engine bays where space and precision matter. Whether you're fabricating a custom radiator setup, installing an aftermarket fuel system, or modifying coolant pathways on a stroker engine build, this fitting allows seamless transitions between 3/4-inch and 1/4-inch lines without compromise.

Manufactured by Fragola—a trusted name in motorsport plumbing for decades—this reducer bushing is precision-machined to exacting tolerances and finished in durable black anodized aluminum or steel, resisting corrosion and heat degradation in under-hood environments. The stepped design allows the larger 3/4-inch port to flow into the smaller 1/4-inch outlet, maintaining consistent line pressure while reducing turbulence at the transition point. At just 0.08 lbs and measuring 1.9 x 1.5 x 4 inches, it's compact enough for confined spaces, yet rigid enough to withstand repeated thermal cycling and vibration typical of engine bays. The black finish provides clean aesthetics for show-quality builds while concealing minor surface imperfections in working environments.

Experienced hot rod builders, LS swap specialists, and street-engine tuners rely on Fragola fittings for their reliability and precision fit. This reducer bushing pairs seamlessly with standard NPT or JIC-threaded ports, making it universally compatible across domestic and import platforms undergoing custom fuel, coolant, or hydraulic modifications. Installation requires only basic wrenching skills—thread the appropriate end into your larger port and the stepped shoulder into the smaller line, securing with thread-sealant tape to prevent weeping. Stock this fitting alongside your other Fragola adapters for any mid-project plumbing changes or future build iterations.