Holley main jets are precision metering orifices that control fuel flow into the carburetor's metering system, rated in flow capacity and flow-tested before being stamped with the correct size.
Specifications:
- Jet Size: .130 in.
- Jet Number: 103
- Thread: 1/4-32
- Material: Brass
- Fits: Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500 carburetors
- Category: Air and Fuel Delivery
- Part Number: 122-103
Not for use with carburetors originally designed for alcohol.
FAQ
What carburetors does this jet fit?
It fits Holley Model 2010, 2300, 4010, 4011, 4150, 4160, and 4500 carburetors.
Can this jet be used with alcohol-fuel carburetors?
No, this standard main jet is not for use with carburetors originally designed for alcohol.
What thread size does this jet use?
It uses a 1/4-32 thread.
What is the Holley part number?
The part number is 122-103.

