This is a MSD Ignition Firewall Feed Thru-Red-1" hole diameter
Part# 8211
It is brand new in the original package as shown from the manufacturer.
The best way to route your spark plug wire through the firewall
To prevent voltage leaks in passenger compartment mounted coil installations, MSD designed the Firewall Feed-Thru. Molded from Rynite® and nylon, the Firewall Feed-Thru provides 1/2” of insulation to ensure that the coil’s spark reaches the distributor.
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