Mikuni N102.221-137.5 Main Jet for SBN Carburetors Jets

The Mikuni N102.221-137.5 is a precision-engineered small round main jet designed for high-performance carburetor tuning. This jet features a 137.5 orifice size, allowing you to fine-tune fuel delivery for optimal engine performance and throttle response.

Key Features:

• Mikuni OEM quality main jet for reliable performance
• 137.5 jet size for precise fuel metering
• Small round configuration for easy installation
• Direct fit for Mikuni SBN 38, SBN 44, and SBN 46 carburetors
• Manufactured to exact specifications for consistent fuel flow

Main jets are essential tuning components that control the fuel flow at wide-open throttle and high RPM ranges. Changing jet sizes allows you to compensate for modifications, altitude changes, or temperature variations. The small round design ensures a secure fit and proper sealing within the carburetor body.

Compatible Carburetors: Mikuni SBN 38, SBN 44, SBN 46 models commonly found on personal watercraft, snowmobiles, and other powersports applications.