Straight Adapter Fitting -8AN x 3/4in NPT

The Vibrant Performance Straight Adapter Fitting -8AN x 3/4in NPT (Part Number 10177) is a precision-engineered AN hose adapter designed to bridge -8 AN male fittings with 3/4-inch NPT male ports. This straight configuration adapter is constructed from aluminum and finished in black anodized coating, providing corrosion resistance in high-vibration fuel, coolant, and fluid transfer applications common to high-performance automotive and marine systems.

The -8AN designation matches industry-standard 1/2-inch hose inner diameter, while the 3/4-inch NPT male thread accommodates common block and manifold port sizes found in LS-based engines, fuel system upgrades, and custom cooling loops. The straight body eliminates elbows, reducing overall length in tight engine bays and allowing direct inline connection between AN braided hose and threaded ports. Black anodized aluminum resists oxidation and thermal cycling better than bare aluminum, critical in underhood environments where temperature swings and fluid exposure accelerate corrosion. Vibrant Performance's fitting tolerances ensure leak-free sealing when paired with compatible AN hose ends and proper thread sealant application.

This adapter serves builders and technicians installing aftermarket fuel systems, supercharger intercooler lines, transmission coolers, and custom radiator plumbing where NPT-threaded blocks or manifolds must accept AN-sized hose. The 0.08-pound weight and compact dimensions make it suitable for weight-conscious racing applications. Commonly paired with -8AN braided stainless or PTFE hose, wrenches rated for -8AN fittings, and NPT thread sealant, this fitting is essential for any modern fuel system or cooling upgrade requiring reliable NPT-to-AN bridging.