K-Jet .058

The KINSLER K-Jet .058 main pill is a precision carburetor jet component engineered for fuel metering in high-performance racing applications. This .058-inch ID brass jet delivers controlled fuel flow, enabling tuners to fine-tune air-fuel mixture ratios for optimal engine performance across varying load and RPM conditions. The K-Jet .058 is designed for carburetors requiring precise main discharge metering, making it essential for bracket racing, street machines, and dedicated competition engines.

Manufactured from brass, the .058-inch inner diameter specification controls the volume of fuel delivered through the main circuit at cruise and part-throttle conditions. Brass construction resists corrosion from ethanol-blended fuels and provides dimensional stability across temperature fluctuations common in engine bays. The compact 1.7 x 0.8 x 3.05-inch profile ensures compatibility with standard carburetor main body castings. Each K-Jet .058 is a single unit, allowing precise stepwise jetting changes to dial in mixture without requiring complete carburetor rebuilds.

Racers and engine builders rely on K-Jet main pills to systematically optimize fuel delivery in carbureted engines. Whether transitioning between fuel blends, adjusting for altitude, or responding to dyno tuning sessions, swapping jets is faster and more cost-effective than carburetor modification. The .058 size sits in the mid-range of KINSLER's lineup, suiting engines from street applications through competition use. Serious tuners stock multiple jet sizes to address changing conditions—track temperature, barometric pressure, and fuel octane all influence the optimal main jet selection.

KINSLER Fuel Injection has built a reputation among circle track competitors and hot rod builders for precision carburetor components. Main jets are wear items in active racing programs; maintaining spare K-Jet pills in common sizes ensures you're never sidelined by a jetting miscalculation or fouled fuel metering orifice.