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 4/042-145 Main Jet Large Hex Brass Carburetor Metering Jet Jets

Part of: Mikuni Main Jet Large Hex Brass Carburetor Metering Jet Jets

Other options in this family: Mikuni 4/042-155 Mikuni 4/042-125 Mikuni 4/042-95

Manufacturer

Picture for manufacturer Mikuni

Part Number

4/042-145
11 reviews
Sale Price

$27.01

In Stock (10+)

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 4/042-145 is a precision-manufactured brass main jet designed for use in a wide range of Mikuni carburetors. This main jet controls fuel flow through the carburetor's main circuit, directly affecting engine performance at mid to high throttle openings.

Key Features:

  • Large hex head design for easy installation and removal with standard tools
  • High-quality brass construction for durability and precise fuel metering
  • Compatible with most Mikuni carburetor models including VM, TM, and BS series
  • Mikuni part number 4/042 series for accurate replacement identification
  • Jet size 145 for specific fuel flow requirements

Main jets are critical tuning components that allow you to optimize your carburetor's fuel delivery for different altitude conditions, engine modifications, or performance requirements. The brass construction ensures consistent orifice dimensions and long-term reliability under constant fuel exposure.

Good job but need free shipping

Good. Very satisfied with my purchase and delivery availability

Convient that I can buy through amazon

Your website was the least expensive and easy to find what I was looking for.

Simple and easy

looks like the discount wont take

Great price. Easy website to use.

Good transaction, no problems, fast ship, quality product. Thanks

thank you dont forget my suite number you are the best with good pric Thank you What i like from you Good price and when you said estimated at 26 thats mean 26 in august not like other one they said something and do something else Thank you ihope next t

Best prices on the internet and fast at getting the product out. Thanks!

I enjoyed the quick and simple the checkout process

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