Rotary + RX-8 Upper Water Pump AN Adapter 16/20AN
Flange with a built-in AN fitting for the upper water pump 2-bolt housing. Lets you run AN lines and still keep the thermostat β no welding necessary, just bolt it in place.
Fits 12A, 13B, 20B and RX-8 engines. Available in -16AN or -20AN, in raw billet or black anodized.