To go with the huge power of the Pro Mag 44, MSD developed a huge cap and rotor, the pro-cap! The top of the pro-cap is crowned with a screw-down retainer to keep all of the plug wires firmly attached to each terminal.
- Wires Stay Firmly In Place
- Each Retainer Fits Tightly
- Fits Over Distributor Boots
Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
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MSD Spark Plug Wire Retainer 7409: