{"product_id":"hayward-spx4000mr-motor-lock-ring-for-northstar","title":"Hayward SPX4000MR Motor Lock Ring - For NorthStar","description":"\u003cp\u003e\u003cstrong\u003eWhat This Part Is Used For\u003c\/strong\u003e\u003cbr\u003e The Hayward SPX4000MR is a motor lock ring specified for Hayward NorthStar pumps. It secures the motor to the pump wet end so the seal plate and housing stay properly clamped together. This ring is located at the motor to wet end connection on the pump.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy This Part Matters\u003c\/strong\u003e\u003cbr\u003e If the lock ring is cracked, loose, or missing, the pump can leak at the seal area or pull air because the wet end is not held tight. A poor clamp at the motor connection can also cause vibration and repeat seal failures after a rebuild. Replacing the correct lock ring restores proper clamping force and alignment. This is commonly needed after a pump has been opened for a shaft seal or impeller service.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey Features and Specifications\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eManufacturer part number: SPX4000MR\u003c\/li\u003e \u003cli\u003eMotor lock ring specified for Hayward NorthStar pumps\u003c\/li\u003e \u003cli\u003eSecures motor to the pump wet end connection\u003c\/li\u003e \u003cli\u003eHelps maintain alignment and sealing at the motor to wet end interface\u003c\/li\u003e \u003cli\u003eService replacement for damaged or missing clamp ring hardware\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eInstallation and Fitment Guidance\u003c\/strong\u003e\u003cbr\u003e Disconnect power at the breaker and relieve pressure before disassembling the pump. Make sure the ring seats evenly and clamps the assembly uniformly so the seal surfaces stay square. Confirm by manufacturer part number before ordering.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eAbout the Hayward Brand\u003c\/strong\u003e\u003cbr\u003e Hayward manufactures a full residential pool equipment ecosystem including pumps, filters, heaters, automation controls, cleaners, chlorination systems, and service parts. Their pumps integrate with Hayward filtration and heating equipment across many residential equipment pads. Service hardware like lock rings supports long term maintenance by keeping wet end rebuilds reliable. Hayward replacement parts are widely supported across the pool industry.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eCommon Service Context\u003c\/strong\u003e\u003cbr\u003e Techs typically replace lock rings when a NorthStar pump has been rebuilt and the clamp hardware is found cracked, stripped, or not holding tight. It is often identified when a pump leaks at the seal area even after replacing internal seals.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52050179326226,"sku":"SPX4000K","price":70.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/HPPSPX4000K_0.jpg?v=1771892455","url":"https:\/\/www.aquaterrabackyard.com\/products\/hayward-spx4000mr-motor-lock-ring-for-northstar","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}