NEW - K20 Upper Coolant Housing For RWD (W/ 16AN and Hose Fitting)Applications: K20A cylinder heads K20A2 cylinder heads K20A3 cylinder heads K20Z1 cylinder heads K24A1 cylinder heads Feature: * a 16OR (O Ring) Outlet * 3 different inlet sizes When putting a K20 into a RWD vehicle the housing typically points towards the firewall. This housing is designed for the fitting to come straight off the head. It uses a 16AN port with options 1. 25" silicone fitting and16AN fittings. You can easily create a custom setups. We