.135in Bypass Pill Main Jet

The .135in Bypass Pill Main Jet from Enderle is a precision fuel metering component designed for high-performance carburetor systems. This main jet controls the fuel flow during cruise and part-throttle operation, making it essential for engine tuning and performance optimization. Racers, engine builders, and carburetor technicians rely on bypass pill jets to achieve the exact air-fuel mixture required for their specific engine combination and intended use.

Machined from durable brass, the .135-inch internal diameter (ID) pill provides consistent fuel metering across a wide range of engine speeds and throttle positions. The bypass pill design allows fuel to flow past the main jet when pressure conditions change, maintaining stable jetting characteristics throughout the power band. Enderle's precision manufacturing ensures tight tolerances, preventing lean-out conditions that could cause engine damage and ensuring repeatable tuning results across multiple carburetor adjustments.

This jet is ideal for builders working with Enderle carburetors and compatible fuel delivery systems on racing engines, street rods, and performance vehicles. The .135-inch specification suits mid-range displacement and fuel consumption applications; builders should verify jet size against their specific engine displacement, fuel pressure, and carburetor model before installation. Individual jets allow tuners to dial in precise fuel delivery without replacing entire carburetors, making this a cost-effective solution for fine-tuning engine performance.