Oil cooling heat sinks are all the rage these days. This excellent free flowing oil heat sink which replaces the "S" rubber oil return tube reduces oil temperature by up to 15ºF . It installs easily (no modification required) and uses existing oil lines and fittings. The heat sink is 13 inches long and 3 inches in diameter. It has over 500 SQ inches of cooling surface to produce fast and efficient heat transfer. The all-aluminum, silver anodized, heat sink has been extensively road-tested and it is worry-free. Kit includes all the harware required and complete installation instructions.