Standard Main Jet #58 HO122-58 Product:1/4-32" Thread, .057" Hole Size (Pair) 204-03DBLK

204-03DBLK

Designed for the street rod and engine swap market utilising 262-400 cid Chevy V8s with 1996 and later Vortec (L31) cast iron or the Edelbrock E-Tec aluminium heads

Feature Points Ultra lightweight composite housing sheds over 50% of the weight compared to a standard AutoMeter universal gauge pod

AF746-01BLK

AF451-10-08

Standard Main Jet #58 HO122-58 Product:1/4-32" Thread, .057" Hole Size (Pair) 204-03DBLKStandard Main Jet #581 4 32" Thread, . 057" Hole Size (Pair) HO122 58 122 58 These metering orifices control fuel flow into the metering system. They are rated in flow capacity "cubic centimetres 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.