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Engine Core Plug. Engine Expansion Plug. Engine Freeze Plug. Engine Welch Plug. Location-Front of Block. Location-Rear of 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.
Mazda
Jim Ellis Mazda Parts
1715 Cobb Parkway South, Marietta, GA, 30060
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