Adapter Fitting Tall -4 To 1/8 NPT 90 Degree

The Adapter Fitting Tall -4 To 1/8 NPT 90 Degree from ALLSTAR PERFORMANCE is a precision hydraulic and pneumatic system connector designed for applications requiring angled flow direction and port size reduction. This adapter serves technicians, fabricators, and performance engineers who need reliable fluid or air routing in tight engine bays, fuel systems, and cooling circuits. The 90-degree orientation allows feeds to approach from perpendicular directions, eliminating bulky hose runs and enabling cleaner, more compact system layouts.

Constructed from steel with zinc oxide finish, this adapter fitting combines corrosion resistance with durability in high-vibration and moisture-exposed environments. The male AN-4 connection (1/2-inch-20 UNF thread) accepts standard -4 hose assemblies, while the 1/8 inch NPT male port threads into NPT female ports common in gauges, sensors, and system manifolds. The 90-degree elbow geometry directs flow at a right angle, reducing pressure loss associated with adapter stacking and providing superior clearance in constrained installations where straight fittings prove impractical.

This adapter is ideal for race engines, custom cooling systems, fuel pressure regulation setups, and aftermarket hydraulic assemblies where AN hose must interface with NPT-threaded components. Installation is straightforward: apply thread sealant to NPT threads, hand-tighten into the receiving port, then secure the AN hose with a properly crimped or reusable fitting. Weighing just 0.11 lbs and measuring 3.5 inches in length, it offers minimal weight penalty and space-saving benefits for engine compartment optimization. Compatible with all standard -4 AN hose and any NPT female port on fuel rails, pressure gauges, and manifold blocks.