Block guard made of high-quality T6061 aluminum, designed for Honda B-series (B16, B18) engines. It fills the empty space in the engine block, which strengthens and stiffens the cylinder walls, while allowing the free flow of the coolant. Particularly recommended for engines with turbo or compressor Block guard made of high quality T6061 aluminum, designed for Honda series B engines (B16, B18). Fills the empty space in the engine block, which strengthens and stiffens the cylinder walls, while allowing the free flow of cooling liquid. Especially recommended for turbo or compressor engines, working at high speed. Fills the empty space in the engine block, which strengthens and stiffens the cylinder walls while allowing the free flow of coolant. Especially recommended for turbo or compressor engines running at high speed. made of high quality T6061 aluminum, designed for engines: Honda B series (B16, B18)