Fan Shroud 31in Allstar

The Fan Shroud 31in Allstar is a precision-engineered cooling system component designed for high-performance engine builds and race applications where efficient airflow management is critical. Built by Allstar Performance—a trusted manufacturer of motorsports-grade parts—this aluminum shroud directs air through your radiator with maximum efficiency, reducing engine temperatures under sustained load. Whether you're running a street rod, off-road vehicle, or competition engine, proper fan shrouding reduces parasitic losses and improves cooling reliability by forcing air through the entire radiator core rather than allowing bypass.

Manufactured from durable aluminum, this shroud accommodates 17-inch diameter fans and pairs with 31-inch radiators, making it compatible with a wide range of mid-size and larger cooling systems common in street rods, muscle cars, and performance trucks. The shroud measures 25.75 inches wide, 19 inches tall, and 9.75 inches deep—dimensions engineered to seal around your radiator mounting while providing clearance for hose routing and accessory placement. The black and natural aluminum finish resists corrosion and blends seamlessly into modern and classic engine bays alike. At just 2.4 pounds, the aluminum construction keeps underhood weight minimal without sacrificing structural rigidity.

This shroud benefits anyone upgrading from open-radiator cooling or replacing damaged factory shrouding on custom builds. Installation requires basic mechanical knowledge and hand tools—the shroud bolts directly to the radiator frame and fan mounting points. Verify your 17-inch fan and 31-inch radiator dimensions before ordering to ensure proper fit. Allstar Performance's commitment to motorsports engineering means this component meets the demands of both street and strip use, delivering consistent cooling performance mile after mile.