#4 > 1/8 Npt 45

The EARLS #4 to 1/8 NPT 45-Degree Adapter Fitting is a precision-engineered hydraulic and pneumatic line connector designed to transition 4 AN male ports to 1/8-inch NPT male threads at a 45-degree angle. This zinc-plated steel adapter serves as a critical junction component in fluid transfer systems where space constraints or routing requirements demand angled connection geometry. The 45-degree configuration reduces the footprint footprint of plumbing layouts compared to straight adapters, making it essential for compact engine bay layouts, fuel system installations, and transmission cooler line work.

Constructed from steel and finished with zinc plating, this EARLS adapter (part number 962304ERL) resists corrosion across automotive, aerospace, and marine environments. The 4 AN (JIC -4) male connection accepts standard AN hose fittings and adapters, while the 1/8-inch NPT male thread engages directly into NPT ports on manifolds, gauges, and component housings. The 45-degree angle allows installers to route lines without sharp bends that would compromise flow or create stress points in hoses and hard lines. At just 0.04 lbs with compact dimensions (0.95 x 0.6 x 3.05 inches), this fitting adds minimal weight while delivering the thread conversion needed in mixed-standard hydraulic and pneumatic circuits.

This adapter is specified for custom fuel systems, supercharger installations, nitrous oxide systems, oil cooler setups, and transmission line plumbing where AN-to-NPT conversion is required. Mechanics and fabricators rely on EARLS adapters for thread compatibility between AN hard-line standards and NPT port components. The angled design is particularly valued in applications where parallel routing or space clearance issues preclude straight adapters, eliminating the need for separate 90-degree elbows downstream.

EARLS fittings maintain tight tolerances and precise thread engagement, critical for systems operating under pressure. The zinc plating provides baseline corrosion resistance suitable for most environments; users in salt-air or submerged applications should verify plating thickness specifications. This 45-degree AN-to-NPT adapter is sold individually and integrates seamlessly into both new builds and retrofit plumbing systems where thread standard conversion and angular routing are required simultaneously.