Holley Standard Main Jet #56 HO122-56 Radiator Hoses & Adapters GM LS Timing Cover Gasket

GM LS Timing Cover Gasket Set

5 +12 / +22 (Ultra Deep Concave)

To back up the incredible ratchet mechanism inside this Nitro shifter

Part Number: AF733-12

Holley Standard Main Jet #56 HO122-56 Radiator Hoses & Adapters GM LS Timing Cover GasketStandard Main Jet #561 4 32" Thread, . 055" Hole Size (Pair) Brand: HOLLEY Part Number: HO122 56 Description: 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.