Roger Clark Motorsport Engine Block Adaptor Modine Water FeedRCM Stainless Steel Block Adaptor which screws into the bottom of the engine block connecting to the oil cooler modine water hose. Being made from Stainless steel, it completely eliminates the problem of corrosion, this is a direct replacement for the Genuine Subaru part. The OE part is prone to rust and corrosion, and isn't available to buy a replacement. Vehicle Fitment: 1994 2000 Subaru Impreza GC GF GM EJ20 (Includes WRX STI) 2001 2007 Subaru