K-Tuned NEW - K20 Upper Coolant Housing For RWD - KUW-20R-N03Applications: K20A cylinder heads K20A2 cylinder heads K20A3 cylinder heads K20Z1 cylinder heads K24A1 cylinder heads Feature: 1. 25 Hose end fitting a 16OR (O Ring) Outlet 3 different inlet sizes Note: 16an fitting available as add on 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