Mikuni 4/042-720 Carburetor Main Metering Jet

The Mikuni 4/042-720 is a precision main metering jet designed for accurate fuel delivery in Mikuni carburetors. This jet features the large hex head design commonly used across most Mikuni carburetor applications, making it a versatile replacement component for various powersports and small engine applications.

Key Features:

• Large hex head design for easy installation and removal
• Precision-machined orifice for accurate fuel metering
• Compatible with most Mikuni carburetor models
• Direct replacement for OEM specifications
• Part of the Mikuni 4/042 series jet family

This main jet controls the fuel flow at mid to wide-open throttle positions, making proper jet sizing critical for optimal engine performance, fuel economy, and reliable operation. The large hex design allows for tool-free removal in most cases, simplifying carburetor tuning and maintenance.