My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Mikuni 019.644 KEIHIN SLOW JET - N424-35-085

Part of: Mikuni KEIHIN SLOW JET

Other options in this family: Mikuni 019.653 Mikuni 019.635 Mikuni 019.652 Mikuni 019.655 Mikuni 019.650

Manufacturer

Picture for manufacturer Mikuni

Part Number

019.644
6 reviews
Sale Price

$6.16

1 left at this price

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Mikuni 019.644 is a precision-engineered Keihin slow jet (pilot jet) designed for carburetor tuning and fuel metering control. This jet regulates fuel flow at idle and low throttle positions, making it essential for optimizing engine performance, throttle response, and fuel efficiency.

Key Features:

  • Keihin part number N424-35-085 for OEM replacement and tuning applications
  • Brass construction ensures durability and precise fuel metering
  • Controls fuel delivery during idle and off-idle operation
  • Critical component for carburetor tuning and adjustment
  • Compatible with Keihin carburetors on motorcycles, ATVs, and powersports vehicles

Slow jets are a consumable tuning component that may require replacement or size changes when adjusting for altitude, temperature, exhaust modifications, or air filter changes. Proper jetting ensures optimal air-fuel mixture and prevents lean or rich running conditions.

Part got to me fast and it was the exact part I ordered.

received

What I have been looking for

PayPal was a little messy.

Insanely fast shipping!

Great Price. Easy Ordering. Great customer service on the phone to answer technical questions? (Thanks Martin)

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy