Radiator Overflow Fitting -4an

The Radiator Overflow Fitting -4AN from JOES RACING PRODUCTS is a precision-engineered coolant system component designed for performance-oriented vehicles and high-output engine builds. This fitting serves as the critical connection point between your radiator overflow tank and the main cooling circuit, allowing pressurized coolant to flow safely during thermal expansion while preventing air ingestion and coolant loss. Proper overflow management is essential to maintaining stable coolant temperatures and protecting your investment.

This -4AN fitting accommodates standard -4 braided coolant lines, making it compatible with both OEM and aftermarket radiator configurations. The compact design—measuring just 3.05 by 0.75 by 3.45 inches and weighing only 0.03 lbs—minimizes packaging constraints in tight engine bays while maintaining robust flow capacity. JOES RACING PRODUCTS manufactures this component to withstand elevated pressures common in modified cooling systems, ensuring reliable operation under sustained track use or street performance conditions.

Custom engine builders, drag racing enthusiasts, and street performance tuners rely on JOES RACING fittings to eliminate cooling system weak points during high-heat operation. This fitting is designed to integrate into various radiator hose routing configurations, providing flexibility for custom installations. Its robust construction ensures that it meets the demands of high-performance applications.