Threaded Adapter/CCW30mm x 1.5 mm

The Threaded Adapter/CCW30mm x 1.5 mm from FLEX-A-LITE is a precision mechanical fan adapter engineered for GM and Mopar applications requiring reverse rotation fan configuration. This screw-on adapter serves as the critical interface between your engine's coolant pulley and the fan blade assembly, allowing technicians to swap cooling fan orientations without replacing the entire fan clutch or hub. Whether you're upgrading to a high-flow radiator, optimizing engine bay airflow, or correcting factory cooling inadequacies, this adapter provides a straightforward mechanical solution for serious cooling system modifications.

Manufactured from hardened steel with black oxide finish, the threaded adapter features a 30 mm x 1.50 mm thread pitch designed to mate directly with FLEX-A-LITE cooling components and OEM fan bolt patterns. The 1-1/2 inch thickness provides structural rigidity while maintaining compatibility with standard engine compartment spacing, and the reverse rotation design reverses fan blade direction—critical for fuel-injected engines, engine swaps, or setups where standard clockwise fan rotation creates cooling inefficiencies. The black oxide coating resists corrosion and maintains appearance under the thermal cycling stresses of engine bay operation, ensuring longevity in demanding performance and street applications alike.

Installation is straightforward for experienced mechanics and engine builders; the threaded adapter simply screws onto your existing cooling fan hub and accepts fan blade assemblies compatible with the 30 mm x 1.50 mm thread specification. This adapter is essential when upgrading cooling systems on Chevrolet small-block and big-block engines, Chrysler and Dodge platforms, or any rebuild where factory fan orientation limits airflow. Verify thread pitch compatibility with your cooling fan assembly before purchase, and ensure proper torque specification during installation to prevent vibration or loosening during highway operation.