MSD Firewall Feed-Thru (Black, Red) 337008 durable aluminum frame

durable aluminum frame

these Lash Caps fit valve stems well and are easily removed

Recess hole size 4 1/2"

Aero Mod I

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

MSD Firewall Feed-Thru (Black, Red) 337008 durable aluminum frameTo 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