HOL-122-78 Carburetor Standard Main Jet
Standard Main Jet, 1/4-32 Thread, .089″ Jet size
Features
- .089″ Jet size
- 1/4-32 Thread
- Sizes from 40-110
- Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500
- Jet Hole sizes provided for reference only . All Holley jets are sized by actual flow and may vary from sizes above.
- Standard Main Jet
Product Video – YouTube
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.
Click on Catalog Product Page for complete listing of jets and sizes.
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 | 78 |
| Jet Size | 0.089 inch |
| Length | 0.35 |
| Material | Brass |
| Orifice Diameter | 0.089 |
| part type | Carburetor Metering Jet |
| Product Type | Standard Main Jet |
| Sub Category | Carburetion |
| Thread Diameter | 1/4-32 |
| Weight | 0.014 kg |
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