MSD Firewall Feed-Thru (Black, Red) Bump Steer Plate Studs finished with black oxide

Studs finished with black oxide and nuts are cadmium and zinc plated to resist corrosion

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Lightweight tri-composite shell

3-4 in Inlet

535 in Oval Port

MSD Firewall Feed-Thru (Black, Red) Bump Steer Plate Studs finished with black oxideTo 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