1/4in-1/8in Pipe Bushing Black

The 1/4in-1/8in pipe bushing black from AEROQUIP (FCM5136) is an essential hydraulic and pneumatic fitting for any serious mechanic or vehicle modification enthusiast. This adapter serves a critical role in fluid system configurations where port size reduction or step-down connections are required—common in custom cooling loops, fuel injection tuning, brake line modifications, and performance hydraulic systems. Whether you're fabricating a custom suspension setup, upgrading fuel delivery on a modified engine, or building bespoke hydraulic control circuits, this NPT-threaded bushing ensures leak-free transitions between mismatched port sizes.

Constructed from black anodized aluminum, the AEROQUIP 1/4in-1/8in pipe bushing features a 1/4 inch NPT male thread on one end and a 1/8 inch NPT female port on the opposite end, allowing seamless integration into systems with different connection standards. The NPT (National Pipe Thread) taper design creates a positive mechanical seal without requiring additional sealant tape on properly assembled connections, though threadlocker and PTFE tape are often applied in high-vibration automotive environments for maximum reliability. Aluminum construction keeps weight to a minimum (0.03 lbs) while maintaining durability under pressure cycles typical of performance hydraulic and fuel systems, making it ideal for weight-conscious builds.

Mechanics and fabricators building custom vehicle hydraulic systems, turbo oil supply lines, or modified fuel injection setups will recognize this bushing as an indispensable manifold adapter. Its compact footprint (2.4 x 1.05 x 3.65 inches) fits tight engine bays and frame-mounted component clusters without requiring extensive rerouting. Compatible with all standard SAE hydraulic fluid specifications and automotive fuel grades, the black anodized finish resists corrosion in both engine compartment and underbody environments. Installation is straightforward using standard wrenches on the 1/4" male hex and 1/8" female port—simply torque to manufacturer specifications for your system pressure rating and verify flow direction before pressurization.