24in #4 Line 1/8in NPT to 10mm Banjo

The 24in #4 Line 1/8in NPT to 10mm Banjo adapter is a precision hydraulic hose fitting engineered for high-pressure fuel, oil, and coolant delivery in performance and racing applications. This adapter bridges SAE #4 (1/4-inch) hose to banjo-style fittings commonly found on fuel pumps, carburetors, and fuel pressure regulators in engine builds where space is tight and routing flexibility matters. Whether you're tuning a carbureted V8, installing an upgraded fuel system on a classic car, or customizing a race engine, this banjo connector eliminates kinks and allows clean, compact line runs without compromising flow integrity.

Constructed to withstand demanding underhood environments, the 24in #4 Line 1/8in NPT to 10mm Banjo features a 1/8-inch NPT (National Pipe Thread) male inlet and a 10mm banjo attachment point, enabling direct connection to OEM and aftermarket fuel system components with minimal adapter stacking. The 24-inch length provides adequate reach for mid-engine configurations, cross-chassis plumbing, and offset fuel cell setups without requiring spliced sections that introduce weak points. SAE #4 hose (nominal 1/4-inch ID) is rated for sustained high-pressure delivery—essential for carburetor bowls, mechanical fuel pumps pushing 6–8 PSI, and modern EFI returnless systems operating at 40+ PSI, depending on line gauge and construction grade.

Mechanics and engine builders rely on banjo fittings for their compact profile and vibration-resistant 90-degree entry, which minimizes hose fatigue compared to straight adapters in tight engine bays. This adapter suits street rods, muscle cars, circle-track race engines, and custom fuel system retrofits where OEM routing won't work or where upgrades to higher-flow carburetors or fuel injectors demand cleaner plumbing. Verify your fuel system's PSI rating and hose ID before purchase; use with automotive-grade braided or reinforced rubber fuel line rated for your pressure specification and fluid type.