Radiator Fitting 1/8in. NPT

The HOWE Radiator Fitting 1/8in. NPT is a precision brass adapter designed to connect cooling system hoses to NPT-threaded ports found on radiators, heater cores, and engine block fittings. This straight adapter features a 1/4-inch hose barb on one end and a 1/8-inch NPT male thread on the other, making it an essential component for custom cooling system builds, engine swaps, and radiator installations where standard factory connections don't match aftermarket or modified plumbing configurations.

Brass construction provides excellent corrosion resistance and durability in coolant environments, while the straightforward barb-to-NPT design allows for secure, leak-free connections without additional adapters. The 1/4-inch barb accommodates standard fuel and coolant hoses, providing a positive grip when hose clamps are properly secured. The 1/8-inch NPT thread is a common cooling system port size on radiator tanks, thermostat housings, and heater control valves, making this fitting widely compatible across domestic and imported engine platforms.

This fitting suits hot rod builders, performance engine builders, and technicians who need reliable adapters for custom cooling system plumbing. It's equally valuable for radiator restoration projects, engine conversions, and any application where NPT-threaded cooling ports must be connected to barbed hoses. The compact size and lightweight profile make installation straightforward in tight engine bay environments.

Sold individually, this adapter is an essential inventory item for shops and builders who work with custom cooling systems. Whether replacing a corroded factory fitting or fabricating a new cooling configuration, the HOWE 3434 provides a proven, durable connection point that handles the thermal and pressure demands of modern cooling systems.