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Pentair WhisperFlo Impeller Screw 1/4-20 x 1 LH Phillips Pan | 071652Z

Pentair SKU: 071652Z
Pentair WhisperFlo Impeller Screw 1/4 - 20 x 1 LH Phillips Pan | 071652Z - Pump Parts - img - 1

Pentair WhisperFlo Impeller Screw 1/4-20 x 1 LH Phillips Pan | 071652Z

Pentair SKU: 071652Z
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Pentair 071652Z Impeller Lock Screw (1/4-20 x 1", Left-Hand Thread) for WhisperFlo / IntelliFlo Pumps

The Pentair 071652Z is an OEM replacement impeller lock screw used in select Pentair pool and spa pumps, including many WhisperFlo and IntelliFlo models. This screw secures the impeller to the motor shaft and is commonly specified as a 1/4-20 x 1" left-hand (reverse-thread) Phillips pan-head stainless steel screw.

Key Details

  • Part number: 071652Z
  • Part type: Impeller lock screw / set screw
  • Thread size: 1/4-20
  • Length: 1"
  • Thread direction: Left-hand (reverse thread)
  • Head style: Phillips pan head
  • Material: 18-8 stainless steel (commonly listed)

Common Compatibility (Verify by Pump Model & Revision)

  • Pentair WhisperFlo pumps (select models)
  • Pentair IntelliFlo pumps (select models/series), including commonly referenced VF / VS / VS+SVRS variants
  • Pentair IntelliPro pump variants (select models)

Always confirm your exact pump model and parts diagram before ordering, since compatibility can vary by production year and motor/pump revision.

Important Service Note

  • This is a left-hand thread screw. It loosens/tightens opposite of a standard right-hand screw. Forcing it the wrong direction can damage the screw or impeller.

What This Part Does

  • Locks the impeller to the motor shaft to prevent loosening during operation
  • Helps maintain proper impeller alignment and pump performance
  • Replaces stripped, corroded, or damaged impeller screws during pump rebuilds and seal replacements

Common Reasons to Replace

  • Stripped Phillips head during pump disassembly
  • Corrosion, thread damage, or broken screw
  • Pump rebuild service (especially when replacing shaft seal / impeller)
  • Incorrect screw installed previously (wrong thread direction or length)

Installation Notes

  • Disconnect power to the pump before servicing.
  • Confirm the pump model and parts diagram before installation.
  • Use the correct screwdriver size to avoid stripping the head.
  • Remember: this screw uses left-hand threads (reverse-thread operation).
  • Inspect the impeller and shaft seal area while the pump is apart, and replace worn components as needed.

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Maintenance Tips

  • When rebuilding a pump wet end, inspect the impeller screw, impeller threads, and shaft seal together.
  • Replace damaged or rounded screws instead of reusing them to avoid future service delays.
  • Keep water chemistry balanced to help reduce corrosion on metal components.
  • If the pump is noisy or leaking, inspect the full wet end assembly—not just the impeller screw.
Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

  • We do not ship on Saturday or Sunday.
  • Orders totaling more than $300 will require signature confirmation upon delivery.
  • We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
  • Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
  • Expedited shipping options are available at checkout.

Return Policy:

  • Products that are received damaged will receive a refund in store credit.
  • Most products are eligible for return within 30 days of receipt, except where noted below.
  • To initiate a return, please complete an RMA form prior to sending your item back.
  • Original shipping costs are non-refundable and will be deducted from the return credit.
  • Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
  • Some returns will be charged an automatic 15% restocking fee.
  • We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
  • Please complete the return form to receive your RMA number and return shipping label.
  • Chemical products are not eligible for return under any circumstances.
  • The Pentair Colorsync 618031 is not eligible for return.
  • Pool cleaners are not eligible for return.
  • Opened seals and o-rings are not eligible for return.
  • Capacitors are not eligible for return.
  • Plastic popup tools are not eligible for return.
  • Automation components and circuit boards are not eligible for return.
  • If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
  • Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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