H. PAULIN & CO. LTD. 263-612 PLUG EXP E-Z SEAL-1-3/4IN

Expansion Plug designed to save mechanic's time will save hours of repair time in replacing core hole plugs, by simply tightening, even when starter, generator, distributor, manifold, steering linkage or air conditioner components interfere. Can be finger-tightened. Permanently set with open end wrench. No metal comes in contact with the coolant. Body of plug is specially compounded Neoprene, resistant to heat, antifreeze and rust inhibitors. Expands as much as 1/8 inch to seal tightly against irregularities.