HOL-122-99 Carburetor Standard Main Jet
Standard Main Jet, 1/4-32 Thread, .126″ Jet size
Features
- Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500
- .126″ Jet size
- Standard Main Jet
- Jet Hole sizes provided for reference only . All Holley jets are sized by actual flow and may vary from sizes above.
- 1/4-32 Thread
- Sizes from 40-110
Product Video – YouTube
Click on Catalog Product Page for complete listing of jets and sizes.
These metering orifices control fuel flow into the metering system. They are rated in flow capacity “cubic centimeters per minute” and are changeable for tuning purposes. The shape of the entry, exit, and size determines flow. All Holley Main jets are flow tested and then stamped with the correct number.
Attributes:
| Warranty | Manufacturer’s Limited 90 Day Warranty |
| Brand | Holley |
| Category | Air and Fuel Delivery |
| Emission Code | 5 |
| Grade Type | Performance |
| Head Diameter | 0.31 |
| Jet Number | 99 |
| Jet Size | 0.126″ |
| Length | 0.35 |
| Material | Brass |
| Orifice Diameter | 0.126 |
| part type | Carburetor Metering Jet |
| Product Type | Standard Main Jet |
| Sub Category | Carburetion |
| Thread Diameter | 1/4-32 |






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