The product is an 88-91 Honda Prelude Si B21A1 Engine Block and mains. This engine block is specifically designed for the Honda Prelude Si model with a B21A1 engine. Made by Honda, this engine block is a crucial component for the proper functioning of the vehicle's engine. It serves as the central structure that houses the engine's main components and is essential for maintaining the overall performance and durability of the vehicle. Engine turns over smooth, cylinder walls look good.

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