Dometic 385230980 OEM Toilet Bellows Pump for S and J Series Vacuum Pumps and T Series Discharge Pumps | White 9.09 x 5.39 x 4.09 inches

Do NOT use chyneec knocks offs. This product has lasted for awhile thus far. Not this particular one, but another I had purchased earlier. I tried the alternatives, and you will be replacing it again in a fraction of the time you would be using this product.

Original billows pump LEAKED brown stuff into bilge = BIG MESS !! The plastic billows actually split which allowed "STUFF" to escape pass the billows upward and out of the pump housing and into the bilge. The duckbill rubber valves are replaced routinely every 3 years. From now on, the billows will be replaced then also. Somewhat expensive, but WHAT A MESS. Remove pump from boat to service. Muriatic acid works best to "clean" pump housing & etc. Wear eye protection and rubber gloves with muriatic acid. When installing the duckbill valves, orient them in vertical position. If they are horizontal, the lower lip of the valve seems to "sag" prematurely, necessitating early replacement. Flush 2 full bowls of water with sudsy dish soap through system whenever leaving boat for more than a few days to prevent more frequent repairs and keep hoses clear of smelly "stuff".

Being liveaboards we use our VaccuFlush year-round day after day and usually rebuild the pump every year. After we started using this bellow we extended the rebuild interval to 18 months and so far it has not cracked or leaked in between. Highly recommended.

Original Dometic bellow. OME part, Fitted well, better price than local marine store or online. Came in with the bolt, not the O rings.

install and work perfectly

Ordered the bellows kit in March as a back up part. Installed in August and used it 2 days in the marina. Today we get to the marina and the head didn’t flush. Checked the bellows and it has completely failed. I leave the breaker for the head off when we aren’t on the boat so it literally lasted two days. Now I’m in for well over $200 to get one from west marine and have a courier service deliver it to the marina. Probably a part that has sat on the shelf for years.

Worked 1st time after installation as advertised.

It works as expected. Easy job to replace. Gaskets don’t come with so order those as well. I ordered O-rings from Amazon when I ordered this bellows and O-rings never arrived. Had to get from local boat shop. Anyhow, this worlds great.