When the Ford and Mercury Y-Block (FYB) engines were introduced in 1953 for the 1954 model year, the oil pumps being used on those first models incorporated the same pump that was already being used on the Lincoln Y-Block (LYB) engines. The Lincoln engines using that oil pump were introduced in 1951 for the 1952 model year offerings. That pump incorporated a cast iron housing with a pair of side-by-side gears and is known as a spur gear design oil pump.
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