Zodiac 39-300 WMS Assembly with O-Ring Replacement<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>WMS assembly replacement</li><li>Fits Zodiac Polaris pool cleaner model 3900 Sport</li><li>Includes o-ring</li><li>This product weighs 2 pounds</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41aUOgNxcML.jpg" noproxy>