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Buick Master Six (1923-1927) Oil pump & engine crankcase (carter)

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Buick made many changes to engines for years 1923, 1924, 1925, 1926 and only a small numbers of parts will interchange between these years. Oil pumps might interchange for some of those years, but lower cast crankcases changed almost every year.

Please specify which year your engine is, or if you are not certain, post some photos of it and we can help figure out what you have.

1926 and 1927 might have had fewer changes as the earlier years did, and thus be the most interchangeable years.

1924 and 1925 Master crankcase can be swapped, but since the cast water pump mount moved locations,  you will have to find the matching water pump for that particular year.


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