Restricting Orifices

Does it sound like somebody is blending a daiquiri in your glove box?

Do you have the infamous marbles in a can sound coming from the front passenger area of your Rx8?

This is caused by air bubbles traveling quickly into your heater core.

This orifice fixes the problem. Install this in the heater hose coming off of your thermostat housing before it gets to the firewall, and it will eliminate the noise.

This orifice goes in the FE01-61-24Y heater hose.

This orifice will only fit in the end of the hose that goes to the thermostat housing, the inside diameter of the firewall side of the hose will be to small to accommodate the orifice.