MSD Firewall Feed-Thru (Black, Red) 337008 Aero Mod I

Aero Mod I

Factory length for '55-'79 Pontiac 350-455

Youve seen them at the drag strip although its hard to read the logo during a 6-second pass

Import / Universal 4 / 6 / 8-Cylinder

Recess hole size 4 1/2"

MSD Firewall Feed-Thru (Black, Red) 337008 Aero Mod ITo prevent voltage leaks in passenger compartment mounted coil installations, MSD designed the Firewall Feed Thru. Molded from Rynite(R) and nylon, the Firewall Feed Thru provides 1 2" of insulation to ensure that the coil's spark reaches the distributor. To prevent voltage leaks in passenger compartment mounted coil installations, MSD designed the Firewall Feed Thru. Molded from rynite a hi dielectric strength material. Features: Absolutely the best