Radiator Inlet Fitting 1-5/8in x -12AN to 1-3/4

The Radiator Inlet Fitting 1-5/8in x -12AN to 1-3/4 is a crucial component for custom cooling system builds and high-performance engine conversions. This adapter connects aftermarket radiator ports with AN-series hose systems, making it essential for fabricators upgrading stock cooling circuits or integrating modular radiators into classic vehicles.

Designed for precision, the fitting features a 1-5/8-inch inlet that connects to standard radiator tank ports, while the -12AN outlet is compatible with high-pressure braided stainless steel coolant hoses. The 1-3/4-inch dimension refers specifically to the outlet port, ensuring compatibility with AN-12 hose fittings commonly used in racing and modified applications.

This fitting is ideal for engine swaps, track-prepped vehicles, and cooling system restorations where original equipment connections are incompatible with modern radiators or routing requirements. Northern Radiator's manufacturing standards guarantee consistent port sizing and thread integrity, which is critical for managing coolant temperatures in high-performance scenarios.