.160in Bypass Pill Main Jet

The .160in Bypass Pill Main Jet is a precision brass metering component designed for carburetor tuning and fuel system optimization in small-engine applications. This main jet serves as a critical flow control element for users who require fine-tuned fuel delivery to match specific engine configurations, altitude conditions, or performance modifications. Whether you're rebuilding a carburetor or fine-tuning an existing setup, this bypass pill ensures accurate fuel metering at idle and low-speed operation.

Constructed from durable brass, the .160in bypass pill main jet features a precisely machined 0.160-inch internal diameter (ID) opening that meters fuel flow according to engine demand. The compact dimensions of 1.6 x 0.45 x 3 inches allow for straightforward installation into standard carburetor bodies without modification. Brass composition provides excellent corrosion resistance and maintains dimensional stability across temperature and fuel exposure variations, making it ideal for both ethanol and conventional fuel systems. The tight tolerance machining ensures repeatable, consistent fuel flow that supports reliable engine operation across varying load conditions.

This main jet is suited for small-engine enthusiasts, carburetor rebuilders, and powersports technicians who need reliable OEM-specification or replacement components. It works in conjunction with pilot jets and needle settings to deliver smooth low-speed response and clean idle characteristics. The lightweight design (0.05 lbs) simplifies handling during carburetor assembly, and compatibility with standard carburetor bores makes installation straightforward for anyone familiar with basic carburetor service. When replacing worn jets or tuning for environmental conditions, this .160in bypass pill main jet delivers the precision fuel control that engines depend on.