MIKUNI Jet Needle J8-6DGY04-59

Fine-tuning your carburetor's mid-range fuel mixture requires precision—and the MIKUNI Jet Needle J8-6DGY04-59 delivers exactly that. If you're experiencing hesitation, bog, or inconsistent throttle response between idle and wide-open, a worn or incorrect jet needle is often the culprit. This OEM-spec needle restores predictable fuel atomization and smooth power delivery across the critical mid-range operating window where most street and track driving happens.

The J8-6DGY04-59 is manufactured in Japan to strict tolerances and is a direct bolt-in replacement for compatible Mikuni VM-series carburetors and select OE Mikuni applications. Installation is straightforward—no carburetor rebuilding experience required, though basic carb familiarity is helpful. Verify fitment against your specific carburetor model and chamber size before ordering, as Mikuni needle specifications vary by application.

• Manufacturer: MIKUNI
• Part Number: J8-6DGY04-59
• Type: Jet needle
• Application: Mid-range fuel mixture
• Compatible: Mikuni VM models
• Material: Precision-machined steel
• Origin: Made in Japan
• Installation: Bolt-in replacement
• Fitment: Verify model compatibility
• Note: Dimensions via Mikuni specification chart