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Cover. Engine Core Plug. Engine Expansion Plug. Engine Freeze Plug. Engine Welch Plug. Location-Engine Block. 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. Engine Expansion Plug
Fits A4, A5, A6, Q5, S4, S5Audi
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6972 US Hwy. 72 W., Huntsville, AL, 35806-1726