3/8 to #10 Male O-Ring Manifold Heater Fitting

The 3/8 to #10 Male O-Ring Manifold Heater Fitting from VINTAGE AIR is a precision adapter designed for climate control and thermal management systems in custom vehicles and retrofitted applications. This fitting serves as a link between NPT-threaded heater cores and AN-style fluid lines, ensuring reliable coolant circulation.

Manufactured from stainless steel with a natural finish, the 3/8 to #10 Male O-Ring Manifold Heater Fitting features durable construction that resists corrosion and thermal degradation. The male O-ring design provides a dependable seal at both connection points—the 3/8 inch NPT male inlet and the #10 AN male outlet—without requiring additional sealant compounds.

This manifold fitting is ideal for custom cooling system installations and vintage air conditioning retrofits. It is particularly useful for automotive enthusiasts looking to modernize factory heater connections in their vehicles.