Beaver Island Parts Company Pump Rebuild Kit for Hayward PowerFlo Matrix SP1591 - Full O‑Ring & Shaft Seal Replacement

A complete rebuild kit from Beaver Island Parts Company that replaces every O-ring, gasket, drain seal and the precision shaft seal to restore a Hayward PowerFlo Matrix pump to reliable, leak-free operation.

If your Hayward PowerFlo Matrix pump (models such as SP1591 and related variants) is leaking, losing prime, or sounding rough, a full seal-and-O-ring overhaul often brings it back to proper performance without the cost of a professional repair or a full pump replacement. This kit gathers the most commonly worn pump consumables—housing O-ring, strainer cover and basket seals, drain plug O-ring, a genuine shaft seal, lubricant and clear installation guidance—so you have everything needed for a straightforward rebuild.

What parts are included and why do they matter?

The kit contains the critical sealing components that most commonly fail in age or after running dry: the housing O-ring, strainer cover O-ring, strainer basket O-ring, drain plug O-ring, and a high-quality shaft seal. Replacing these parts eliminates leaks, restores prime, and reduces noise caused by cavitation or air intrusion.

• Housing O-ring (SPX0710XZ5) — seals pump volute to motor housing.
• Strainer cover and basket O-rings (SPX5500H / SPX5500K) — prevent air entry and keep the basket area watertight.
• Shaft seal (SPX1500KA) — the primary wear item that stops water from leaking into the motor.
• Drain plug O-ring and supplied O-ring lubricant — simplifies installation and prolongs seal life.

Which Hayward models and OEM kits is this rebuild kit compatible with?

This Beaver Island kit is sized and packaged for Hayward PowerFlo Matrix pumps and fits a range of model numbers and previously sold repair kits. Confirm model numbers on your pump housing before ordering to ensure compatibility.

• Fits: SP1591, SP1591TL, SP1592, SP15922S, SP1592FT, SP1592TL, SP1593, SP15932S, SP1593TL and W3SP159x series.
• Cross-references OEM/aftermarket kits: SPXHKIT12MTX, GO-KIT74, APCK1068.
• Designed to match form, fit, and function of the original Hayward sealing components.

How should the kit be installed for best results?

Follow the QR-linked instructions included with the box or download the PDF from the listing for step-by-step guidance. Use the supplied lubricant sparingly on rubber parts only—never lubricate the hard ceramic or carbon faces of the shaft seal.

• Apply lubricant only to O-rings, gaskets, and stationary rubber sealing surfaces.
• Do NOT coat the rotating ceramic/carbon faces—this will cause leaks.
• If more lubricant is needed, the manufacturer recommends Aqua Flex pool-safe O-ring lubricant.

Should I rebuild the motor at the same time?

While replacing seals addresses the leaking and priming issues, worn motor bearings will still cause noise and vibration. Beaver Island recommends replacing motor bearings when performing a pump overhaul for a complete restoration.

• Motor bearing kits are available separately from Beaver Island Parts Company.
• Pairing pump and motor rebuilds minimizes future downtime and repeat disassembly.
• Check shaft endplay and bearing noise before reassembly to decide on a motor kit.

Who is this for: Homeowners, pool service technicians, and DIYers who own or maintain Hayward PowerFlo Matrix pumps and need an affordable, complete seal replacement package. This kit suits anyone who wants to stop leaks, restore pump prime, and extend pump life without replacing the entire unit. Beaver Island Parts Company is a U.S. family-owned small business that supplies parts for pool, spa, and specialty equipment; note that Hayward is a separate brand and listed here only for compatibility reference.