Trick Vacuum Secondary Diaphragm

The Trick Vacuum Secondary Diaphragm by Advanced Engine Design is a precision vacuum-actuated component designed for carburetors and fuel delivery systems that require reliable secondary circuit engagement. This diaphragm is ideal for performance-minded mechanics and engine builders who are tuning classic muscle cars, street rods, or high-performance engines.

Engineered with precision tolerances and durable elastomer construction, this vacuum secondary diaphragm controls the secondary air valve operation in two-stage carburetor systems. It enables a smooth transition between primary and secondary fuel circuits under varying load conditions, ensuring consistent throttle response across the entire RPM range.

Carburetor enthusiasts, restoration specialists, and tuners will find this diaphragm essential for rebuilding or upgrading a two-stage carburetor system. Its sealed design isolates the vacuum chamber from fuel contamination, preventing degradation and ensuring reliable actuation throughout the engine's service life.