Complete port blocking solution - Includes both 9/16"-18 and 1/2"-20 inverted flare nuts for unused master cylinder ports
OEM-style fitment - Direct replacement that matches G--M specifications
Durable steel construction - Silver-finished nuts provide reliable sealing and corrosion resistance
Universal G--M application - Works with most 4-port master cylinders requiring port blocking
Essential brake system component - Prevents fluid leaks and maintains proper brake system pressure
Description
This G--M master cylinder side plug kit provides professional-quality port blocking for unused brake line ports. The set includes both 9/16"-18 and 1/2"-20 inverted flare nuts (reference #LSOT001600) made from durable steel. Perfect for custom brake setups or master cylinder modifications, these plugs ensure a secure, leak-free seal.