OS Engines Metering Needle 21C/21J – SCH-OS23818340

The OS Engines Metering Needle Assembly 21C.21J is a genuine replacement part for maintaining precise fuel metering on OS nitro carburettors. Supplied under part number SCH-OS23818340, this needle assembly helps restore consistent tuning, throttle response and reliable idle when the original component becomes worn or damaged.

Key Points

• Genuine OS Engines replacement part for dependable fit and performance
• Helps maintain accurate fuel delivery and stable engine tuning
• Ideal for routine maintenance or rebuilds of OS nitro carburettors
• Part number: SCH-OS23818340 for easy identification

Suggested Compatibility

• OS carburettors designated 21C and 21J

For best results, confirm the correct part for your specific engine and carburettor using your manual or parts diagram before installation.