Carburettor Jets

Carburettor Jets are precision metering components used to regulate fuel and air in carburetors. This category gathers main jets, idle jets, air jets, and pump jets, along with high-quality replacements for popular families such as Dellorto DHLA and Weber DMTR/DCOE. They come in a broad range of sizes to suit engine displacement, altitude, fuel type, and tuning goals, making them essential for restoration projects, performance upgrades, and reliable everyday operation.

Key features include tightly controlled orifice sizes, corrosion-resistant materials, and compatibility with OEM calibrations. Main jets govern mid- to high-RPM fueling, idle jets support stable starts and idle, and air jets regulate air flow to preserve the correct air-fuel ratio. Pump jets assist during rapid throttle action, smoothing response and drivability. Because jetting varies by brand and carburetor family, selecting the right size and type is critical for consistent power and efficiency.

Buying tips: identify your exact carb model, confirm the jet type and size, and consider engine displacement, altitude, and ethanol content. Favor OEM-grade or reputable replacement jets to maintain accuracy and durability. Keeping a small assortment of common sizes or a tuning kit helps refine air-fuel balance as conditions change. For trusted sources, The Green Spark Plug Company offers carburettor jets and related parts.