Plug that prevents the engine block or cylinder head from cracking in case of freezing coolant. Also used to plug the casting holes from production. 108pcs 8-36mm Universal Engine Freeze Plugs - Zinc-Plated Brass Expans ion Core Plugs for Tractor/Car/Truck/Van/Marine | Cylinder Head & Block Welch Plugs with Plastic Organiser Box.
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