{"product_id":"xmk-6600-166-temperature-sensor-for-sundance-spas-jacuzzi-hot-tubs-curled-finger-connectors-6540-228-o-ring","title":"XMK 6600-166 Temperature Sensor for Sundance Spas \u0026 Jacuzzi Hot Tubs — Curled Finger Connectors \u0026 6540-228 O-Ring","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe XMK 6600-166 Temperature Sensor is a thoughtful replacement part designed for a broad range of Sundance Spas and Jacuzzi hot tubs. It features curled finger connectors for a secure, reliable connection and comes with a 6540-228 O-ring to help maintain a solid seal. With 12-foot sensor wiring, it offers flexible routing from the filter area to the control panel, making installation approachable for handy DIY spa owners.\u003c\/p\u003e\n\u003cp\u003eReplacing a temperature sensor can be a practical step when your spa shows unusual temperature readings or displays watchdog-like or placeholder “- - - -” errors. While not a guaranteed fix for every issue, a properly functioning sensor can help restore a steadier temperature readout and reduce multiple error symptoms that interrupt spa use.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBroad compatibility with Sundance Spas and Jacuzzi models across several years and series\u003c\/li\u003e\n  \u003cli\u003eDurable curled finger connectors for dependable electrical contact\u003c\/li\u003e\n  \u003cli\u003eIncludes 6540-228 rubber O-ring for a secure seal and leak prevention\u003c\/li\u003e\n  \u003cli\u003e12-foot wiring provides flexible placement without stressing the harness\u003c\/li\u003e\n  \u003cli\u003eClear, straightforward installation steps suitable for DIY replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility Snapshot\u003c\/h3\u003e\n\u003cp\u003eThis sensor is designed to fit a wide array of Sundance Spas and Jacuzzi tubs, including many late-2000s and early-2010s models and LX-series systems. Because spa control boards and wire harness configurations vary, please compare the sensor’s connectors, wire length, and gasket to your current setup to confirm fitment before installation.\u003c\/p\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLocate the sensor in the filter compartment area; disconnect and remove the old unit following the tub’s service guide.\u003c\/li\u003e\n  \u003cli\u003eFeed the new sensor’s wire through the tub to the equipment compartment, then connect to the PC board using the curled finger plug.\u003c\/li\u003e\n  \u003cli\u003eReplace the gasket, route the wire back through, and reassemble per your spa’s instructions. No additional replacement parts are required beyond what’s listed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x 6600-166 Spa Temperature Sensor with Curled Finger Connectors\u003c\/li\u003e\n  \u003cli\u003e1 x 6540-228 Rubber Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Ensure the spa is powered down and the water is safely drained as needed before service. This replacement part aims to restore accurate temperature reading and stable operation in compatible models.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which spa models are compatible with the XMK 6600-166 temperature sensor?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compatible with many Sundance Spas and Jacuzzi models across multiple years; refer to the listed model ranges to confirm compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What comes in the package?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: 1 x 6600-166 temperature sensor with curled finger connectors and 1 x 6540-228 rubber gasket.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"XMK","offers":[{"title":"Default Title","offer_id":43989399011462,"sku":"B0C4PFZFXJ","price":22.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/1602\/5478\/files\/xmk-6600-166-temperature-sensor-curled-finger-connectors.jpg?v=1778866704","url":"https:\/\/patiozora.com\/products\/xmk-6600-166-temperature-sensor-for-sundance-spas-jacuzzi-hot-tubs-curled-finger-connectors-6540-228-o-ring","provider":"PatioZora","version":"1.0","type":"link"}