Hayward NorthStar Strainer Cover O-Ring After 2007 SPX4000S

Hayward Products SKU: SPX4000S
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Hayward NorthStar Strainer Cover O-Ring After 2007 SPX4000S

Hayward Products SKU: SPX4000S
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Hayward SPX4000S NorthStar Strainer Cover O-Ring - After 2007

The Hayward SPX4000S Strainer Cover O-Ring is a genuine replacement lid seal for compatible Hayward NorthStar pump strainer covers manufactured after 2007. This O-ring helps create a tight seal between the pump strainer cover and pump housing to prevent air leaks, water leaks, and loss of prime.

This replacement O-ring is commonly used when the pump lid seal is stretched, flattened, cracked, leaking, dry, or missing. A properly sealing strainer cover O-ring is important for maintaining suction, keeping the pump primed, and protecting overall pump performance.

Product Features

  • Genuine Hayward replacement pump O-ring
  • Manufacturer part number: SPX4000S
  • Designed for Hayward NorthStar pump strainer covers manufactured after 2007
  • Helps seal the pump lid / strainer cover
  • Helps prevent air leaks and water leaks at the pump lid
  • Important for maintaining pump prime and suction performance
  • Black replacement O-ring
  • Common replacement part during pump lid service

Product Details

Brand Hayward
Part Number SPX4000S
Product Number HAY-101-1532
Product Type Pump Strainer Cover O-Ring
Color Black
Application Pool pump strainer cover / pump lid seal
Compatible Pump Series Hayward NorthStar SP4000 and SP4000X Series Pumps
Model Year Range After 2007 / 2008 and later NorthStar pump lid style
UPC 0610377079242

Compatibility

  • Hayward NorthStar SP4000 Series pumps manufactured after 2007
  • Hayward NorthStar SP4000X Series pumps manufactured after 2007
  • Compatible pump strainer covers requiring Hayward part number SPX4000S

Common Signs This O-Ring Needs Replacement

  • Pump loses prime after shutting off
  • Air bubbles are visible in the pump basket
  • Water leaks around the pump lid while running or after shutdown
  • O-ring is cracked, stretched, flattened, dry, or brittle
  • Pump lid is difficult to seal even after cleaning and lubricating
  • Strainer cover O-ring is missing or pinched

Important Notes

  • This item is the strainer cover O-ring only.
  • Pump lid, lock ring, pump basket, housing, and other pump parts are sold separately unless otherwise stated.
  • Verify your exact pump model and lid style before ordering.
  • Hayward NorthStar pumps manufactured in different year ranges may use different lid seals.
  • For 2003-2007 NorthStar pump lid applications, verify whether SPX4000TS is required instead.
  • Replacing the O-ring may not stop leaks if the pump lid, lock ring, or strainer housing is cracked or damaged.

Installation Notes

  • Turn off the pump before removing the strainer cover.
  • Relieve system pressure before opening the pump lid.
  • Remove the old O-ring and clean the O-ring groove completely.
  • Inspect the pump lid and strainer housing for cracks, warping, or debris.
  • Apply a light coat of pool-safe silicone lubricant to the new O-ring.
  • Do not use petroleum-based lubricants, as they can damage rubber seals.
  • Seat the O-ring evenly and reinstall the lid according to Hayward instructions.
  • Restart the pump and check for air leaks, water leaks, and proper prime.

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Maintenance Tips

  • Inspect the pump lid O-ring whenever the pump basket is cleaned.
  • Clean dirt, sand, leaves, and debris from the lid and O-ring groove before reinstalling.
  • Lubricate the O-ring lightly with pool-safe silicone lubricant when needed.
  • Replace the O-ring if it becomes stretched, cracked, flattened, or difficult to seal.
  • Do not overtighten the lid or lock ring, as this may damage pump components.
  • Address pump lid air leaks quickly to help prevent priming issues and pump damage.
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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