Where is cylinder number 1 for 1999 Subaru Legacy 2.5 L?

In the 1999 Subaru Legacy with a 2.5 L engine, cylinder number 1 is located on the driver's side of the engine. The cylinders are arranged in a flat, horizontally opposed configuration, commonly known as a boxer engine. Therefore, looking at the engine from the front, cylinder 1 is the first cylinder on the left side.