Pentair 355331 Diffuser O-Ring Replacement Specialty and Swimming Pool Inground Pump<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Diffuser o-ring replacement</li><li>Fits Pentair Challenger high flow and high pressure inground pumps</li><li>Also fits Pentair WaterFall specialty pumps</li><li>Measures 3-inch length by 1/4-inch height by 3-inch width</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31A3NKJX2QL.jpg" noproxy>