ERC4996LR - Core Plug Cup – 53mm

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Core Plug (Cup Type) for sealing the core holes left in the engine block casting after the sand cores are removed during manufacture. The cup-shaped plug is pressed into the machin ed bore and seals against the coolant jacket, completing the cooling circuit. It also acts as a relief point if coolant freezes, helping protect the block from cracking. Nominal 53mm diameter (measured 52.75mm). Show more