

MIKUNI
NEEDLE JET
In stock · stock as of Sep 3, 2026
Shipping calculated at checkout
30-day returns on unused parts
Details
Mikuni Needle Jet Fine-tune your carburetor’s midrange performance with a genuine Mikuni O-4 Needle Jet. Part number 784-231508-O-4 is engineered to provide precise fuel metering as the jet needle moves through the needle jet, helping maintain smooth throttle response and consistent fuel delivery. Mikuni needle jets are manufactured to tightly controlled specifications for dependable, repeatable carburetor tuning. Genuine Mikuni carburetor component Precision fuel metering for consistent engine performance Helps control the fuel mixture through approximately the 1/4 to 3/4 throttle range O-4 sizing for application-specific carburetor calibration Precision-manufactured for consistent flow characteristics Direct replacement for compatible Mikuni carburetor applications Ideal for carburetor rebuilding, restoration, and jetting adjustments Includes: Mikuni Needle Jet (1) Specs / Notes Manufacturer: Mikuni Part Number: 784-231508-O-4 Component Type: Needle Jet / Emulsion Tube Jet Size: O-4 Genuine Mikuni replacement component Verify carburetor and vehicle application before installation Changing needle-jet size affects midrange fuel mixture and may require additional carburetor tuning
Specs
- Vehicle
- ATV/UTV, Marine, Offroad, Street, Winter
- Weight Lb
- 0.1
- Shipping Class
- standard


