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.
Specifications:
| Description_ASC |
NOT FOR USE WITH CARBURETORS ORIGINALY DESIGNED FOR ALCOHOL |
| Description_DEF |
Carburetor Metering Jet |
| Description_DES |
Carburetor Standard Main Jet |
| Description_FAB |
Standard Main Jet |
| Description_FAB |
.042" Jet size |
| Description_FAB |
1/4-32 Thread |
| Description_FAB |
Sizes from 40-110 |
| Description_FAB |
Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500 |
| Description_FAB |
Jet Hole sizes provided for reference only . All Holley jets are sized by actual flow and may vary from sizes above. |
| Description_MKT |
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. |
| Description_INV |
JET |
| Description_EXT |
Carburetor Jet; Standard Main Jet; 1/4-32 UNF Thread; Hole Size 0.042 in.; Pair; |
| Description_SHO |
Carburetor Jet |
| WARNING CA Proposition 65 Message |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Brand |
Holley |
| WARNING CA Proposition 65 |
Yes |
| Warning |
California Proposition 65 |
| Clearance Category |
Carburetors and Components |
| Product Type |
Standard Main Jet |
| Warranty |
Limited 90 Day |
| Sale Category |
Carburetors and Components |
| Carburetor Type |
Holley |
| Jet Number |
42 |
| Emission Code |
5 |
| Jet Size |
0.042 inch |
| Discount Percentage |
26-50% |
| Length |
1.0000 |
| Width |
3.0000 |
| Height |
5.0000 |
