Mikuni 003.538 261 Series P-2 Needle Jet for VM29-VM33 Smoothbore Carburetor

The Mikuni 003.538 is a genuine OEM 261 series needle jet designed specifically for VM29 and VM33 smoothbore carburetors. Also known as an emulsion tube, this precision-manufactured component threads into the bottom of the main carburetor body and plays a critical role in fuel metering during mid-range throttle operation.

Key Features:

• 261 series P-2 size specification with 2.660mm internal diameter
• Bleeder-type jet design for optimized fuel-air mixture control
• Smooth bore construction for consistent fuel flow
• Genuine Mikuni quality with precise flow rating
• Direct replacement for VM29/16 carburetor applications

The P-2 designation indicates this needle jet has an internal diameter of 2.660mm, measured in precise 0.005mm increments as per Mikuni's sizing system. The 261 series is specifically engineered for VM29 and VM33 smoothbore carburetors, which are now discontinued but remain popular performance carburetors for motorcycle and powersports applications. This bleeder-type needle jet works in conjunction with the jet needle to regulate fuel delivery from approximately 1/4 to 3/4 throttle positions, making it essential for proper carburetor tuning and engine performance.

Note: Mikuni needle jets are identified by the three-digit series number (261) stamped on the component. Always use genuine Mikuni jets for accurate fuel metering and optimal engine performance.