GM Flexplate Ultrashield P/G & 400

The GM Flexplate Ultrashield P/G & 400 is a specialized flexplate heat shield designed for General Motors automatic transmission builds, particularly Powerglide and 400-series transmissions used in street, strip, and drag racing applications. This component addresses a critical thermal management need by protecting the transmission from extreme temperatures that can degrade performance.

Engineered to intercept and dissipate radiant heat, the Ultrashield helps maintain transmission fluid integrity and shift quality. The design features a rigid mounting architecture that isolates the barrier from direct flexplate contact, preventing vibration transfer. This ensures that the shield effectively protects both OEM and performance builds from heat-related degradation.

Mechanics and engine builders working with Chevrolet small-block or big-block platforms will find the Ultrashield beneficial for high-performance applications. Its geometry conforms to the Powerglide and 400 transmission bellhousing profile, ensuring OEM fitment without the need for drilling or modification to the engine block or transmission case.