Mikuni 4/042-460 Carburetor Main Jet Large Hex Type Jets

The Mikuni 4/042-460 is a precision-engineered main jet designed for accurate fuel metering in Mikuni carburetors. This large hex-style jet features the standard hex head design used across most Mikuni carburetor applications, making it a versatile replacement component for powersports vehicles, motorcycles, ATVs, and other small engines.

Key Features:

• Large hex head design for easy installation and removal
• Precision-machined brass construction for accurate fuel flow
• Compatible with most Mikuni carburetor models
• Mikuni part number 4/042 series for guaranteed OEM fit
• Essential component for carburetor tuning and performance optimization

Main jets are critical for controlling the fuel mixture in your carburetor's main fuel circuit, which affects mid to wide-open throttle performance. Selecting the correct jet size ensures optimal engine performance, fuel efficiency, and prevents running too rich or too lean. The large hex design allows for quick jet changes during tuning sessions.