.170in Bypass Pill Main Jet

The ENDERLE .170in Bypass Pill Main Jet is a precision brass component engineered for high-performance fuel system tuning in racing and performance engine applications. This 0.170-inch internal diameter main jet serves as a critical metering orifice in bypass fuel systems, controlling the precise volume of fuel delivered to the carburetor circuit. Built from brass for superior corrosion resistance and dimensional stability, this component is essential for racers and engine builders seeking accurate fuel mixture calibration across varying engine loads and RPM ranges.

The .170-inch bore specification directly affects fuel metering accuracy and overall engine response. By selecting the correct jet size, builders and tuners can optimize air-fuel ratios for their specific engine combination, eliminating rich or lean conditions that compromise power delivery and fuel economy. ENDERLE jets are manufactured to tight tolerances, ensuring that the internal diameter remains consistent and reliable across thousands of engine cycles. The brass construction resists fuel degradation and internal corrosion, maintaining metering precision even in motorsports environments where fuel sits in the system between events.

This main jet is ideal for drag racers, oval-track competitors, and street-performance enthusiasts running ENDERLE or compatible bypass carburetor systems. Whether you're fine-tuning a naturally aspirated engine or optimizing a supercharged or turbocharged combination, having the correct jet size on hand is essential for efficient dyno work and trackside adjustments. Available as a single unit, this part allows quick swaps during carburetor calibration without requiring complete system overhauls. Stock multiple sizes to bracket in your ideal fuel mixture quickly and effectively.