.155in Bypass Pill Main Jet

The .155in Bypass Pill Main Jet by ENDERLE is a precision fuel metering component designed for high-performance carburetor systems, particularly in drag racing, circle track, and street performance applications. This bypass pill serves as a critical restriction element that controls fuel delivery through the bypass circuit, ensuring optimal air-fuel mixture under varying engine loads and throttle positions.

Manufactured by ENDERLE, a trusted name in fuel system engineering, this .155-inch bypass pill works in conjunction with your carburetor's primary and secondary circuits to regulate fuel flow during acceleration and part-throttle operation. The bypass jet restricts flow through the bypass fuel passage, forcing fuel down the correct circuits based on engine demand and boost conditions. Precision engineering ensures consistent metering across temperature ranges and fuel pressures, critical for maintaining stable tune in both naturally aspirated and supercharged applications.

The compact 1.5 x 0.4 x 2.9-inch form factor allows for easy installation and removal during carburetor tuning sessions, making this an essential item for any serious engine builder's tuning toolkit. This component is ideal for technicians and racers who demand precision fuel delivery and require the utmost reliability in their performance setups.