The Pentair Diffuser Assembly (072927Z) is the OEM replacement diffuser for WhisperFlo WFE-2 through WFE-8 inground pumps (1/2 HP to 2-1/2 HP) and the IntelliFlo i2 Variable Speed Pump. The diffuser channels water from the impeller eye into the volute, converting velocity into pressure that drives flow through your filtration system. A cracked or worn diffuser disrupts this conversion, resulting in reduced flow rates, increased energy draw, and premature wear on the impeller. Replacing the diffuser assembly restores the hydraulic efficiency the pump was designed to deliver. Specifications Pentair Part Number 072927Z Part Name Diffuser Assembly, WFE-2 through WFE-8, 1/2 HP to 2-1/2 HP Quantity Included 1 Fits Into Brand Equipment Line Model / Part Number Notes Pentair WhisperFlo Pump WFE-2 WFE-2 through WFE-8, 1/2 HP to 2-1/2 HP Pentair WhisperFlo Pump WFE-4 WFE-2 through WFE-8, 1/2 HP to 2-1/2 HP Pentair WhisperFlo Pump WFE-6 WFE-2 through WFE-8, 1/2 HP to 2-1/2 HP Pentair WhisperFlo Pump WFE-8 WFE-2 through WFE-8, 1/2 HP to 2-1/2 HP Pentair WhisperFlo Pump WFET-4 Diffuser assembly for WFE-2 through WFE-8, 1/2 HP through 2-1/2 HP. Verify fitment before ordering. Pentair WhisperFlo Pump WFET-6 Diffuser assembly for WFE-2 through WFE-8, 1/2 HP through 2-1/2 HP. Verify fitment before ordering. Pentair WhisperFlo Pump WFET-8 Diffuser assembly for WFE-2 through WFE-8, 1/2 HP through 2-1/2 HP. Verify fitment before ordering. Pentair WhisperFlo VST WHISPERFLO VST — Pentair IntelliFlo i2 Variable Speed Pump i2 Diffuser for i2 Pump only Pentair IntelliFlo i2 Variable Speed Pump INTELLIFLO-I2 Diffuser specifically for IntelliFlo i2 Pump Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering. Pro Tip While the pump wet end is disassembled for diffuser replacement, inspect the impeller and shaft seal at the same time. These components share the same service interval and accessing them requires the same disassembly steps — replacing them together avoids a second teardown shortly after. Confirm the part number molded on your existing diffuser matches 072927Z before ordering, particularly if your pump has been repaired previously.
