Blower Fitting 4in x 3in Threaded

The Blower Fitting 4in x 3in Threaded from PARAGON PRO INC is a versatile transition coupling designed to connect larger 4-inch diameter ducting to smaller 3-inch threaded ports. This reducer fitting is essential for various custom engine builds, including turbocharged and naturally aspirated systems, where optimized air intake flow is crucial.

Constructed to endure high-velocity air charge temperatures and pressure spikes, this fitting features robust threaded connection points that ensure a secure, leak-free assembly. Its tapered design minimizes turbulence and flow restriction, helping to maintain the efficiency of forced induction systems.

Engine builders and mechanics working on various platforms, including late-model LS engines and small-block Chevys, will find this blower fitting invaluable for both prototype and performance projects. The threaded design allows for easy installation using standard automotive hose clamps, making it a practical choice for custom fabrication.