{"product_id":"xpartco-8557403-dryer-thermostat-replaces-wp8557403","title":"XPARTCO 8557403 Dryer Thermostat Replaces WP8557403","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;600;700;900\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .pom { font-family: 'Inter', sans-serif; color: #1e293b; line-height: 1.75; }\n  .pom *, .pom *::before, .pom *::after { box-sizing: border-box; }\n  .pom h2 { font-size: 21px; font-weight: 900; color: #0f172a; margin: 0 0 12px; letter-spacing: -0.01em; }\n  .pom h3 { font-size: 17px; font-weight: 900; color: #0f172a; margin: 0 0 12px; letter-spacing: -0.01em; }\n  .pom-card { background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 20px 22px; margin-bottom: 16px; }\n  .pom-card-blue { background: #eff6ff; border-color: #bfdbfe; }\n  .pom-card-green { background: #f0fdf4; border-color: #bbf7d0; }\n  .pom-qa { background: #eff6ff; border-left: 4px solid #1e40af; border-radius: 0 8px 8px 0; padding: 16px 20px; margin-bottom: 16px; }\n  .pom-qa-label { font-size: 10px; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; color: #1e40af; margin: 0 0 6px; }\n  .pom ul { margin: 0; padding: 0; list-style: none; }\n  .pom ul li { position: relative; padding-left: 20px; margin-bottom: 8px; font-size: 16px; }\n  .pom ul li::before { content: \"\"; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; border-radius: 50%; background: #1e40af; }\n  .pom-list-green li::before { background: #15803d; }\n  .pom-specs-table { width: 100%; border-collapse: collapse; font-size: 15px; }\n  .pom-specs-table tr { border-bottom: 1px solid #f1f5f9; }\n  .pom-specs-table tr:last-child { border-bottom: none; }\n  .pom-specs-table td { padding: 9px 4px; }\n  .pom-specs-table td:first-child { color: #1e293b; width: 45%; font-style: italic; }\n  .pom-specs-table td:last-child { font-weight: 700; color: #0f172a; }\n  .pom-warning { background: #fffbeb; border-left: 4px solid #f59e0b; border-radius: 0 8px 8px 0; padding: 14px 18px; font-size: 15px; color: #92400e; line-height: 1.65; }\n  .pom-warning strong { display: block; margin-bottom: 5px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; }\n  .pom-faq-item { margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid #f1f5f9; }\n  .pom-faq-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }\n  .pom-faq-q { font-weight: 700; color: #0f172a; margin-bottom: 5px; font-size: 16px; }\n  .pom-faq-a { font-size: 15px; color: #334155; margin: 0; line-height: 1.65; }\n  .pom-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }\n  .pom-badge { background: #f0fdf4; border: 1px solid #bbf7d0; color: #15803d; font-size: 14px; font-weight: 700; padding: 6px 14px; border-radius: 999px; }\n  .pom p { margin: 0 0 12px; font-size: 16px; }\n  .pom p:last-child { margin-bottom: 0; }\n\u003c\/style\u003e\n\u003cdiv class=\"pom\"\u003e\n\u003cdiv class=\"pom-card\"\u003e\n\u003ch2\u003eXPARTCO 8557403 Dryer High-Limit Thermostat with Thermistor Replaces WP8557403\u003c\/h2\u003e\n\u003cp\u003eThe XPARTCO 8557403 is an aftermarket replacement dryer high-limit thermostat and thermistor sensor assembly compatible with a wide range of Whirlpool, Maytag, Kenmore, Amana, KitchenAid, Jenn-Air, Roper, Admiral, Norge, and Magic Chef electric dryers — including the Whirlpool Duet and Maytag MED series. This single component combines two functions: the high-limit thermostat (rated L146-44C, opens at 295°F) acts as a resettable safety switch that cuts power to the heating element if the dryer air temperature exceeds safe limits, and the integrated 50-ohm thermistor continuously monitors air temperature and sends resistance-based readings to the control board to regulate the drying cycle.\u003c\/p\u003e\n\u003cp\u003eWhen this part fails — whether the thermostat opens permanently or the thermistor provides incorrect temperature data — the dryer may produce no heat, run too hot, take too long to dry, overheat, or display temperature-related error codes. It measures 1-5\/8\"L x 1-5\/8\"W x 2\"H with approximately 1-5\/8\" between mounting holes and is constructed from black\/gray plastic and metal. It directly replaces WP8557403, 1180102, AP6013164, EAP11746386, PD00003588, and PS11746386. Note: the exhaust duct thermostat and thermal fuse are separate parts — if those have also failed, they must be ordered separately. Installs in 15–20 minutes with basic hand tools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-qa\"\u003e\n\u003cp class=\"pom-qa-label\"\u003eQuick Answer\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eXPARTCO 8557403 Dryer High-Limit Thermostat with Thermistor\u003c\/strong\u003e fixes Whirlpool Duet, Maytag MED, and related dryers with no heat, overheating, or erratic temperature. Combined part: L146-44C high-limit thermostat (opens at 295°F, auto-resets) + 50-ohm NTC thermistor. 1-5\/8\"L x 1-5\/8\"W x 2\"H, ~1-5\/8\" between mounting holes. Replaces WP8557403, 1180102, AP6013164, EAP11746386, PD00003588, PS11746386. For Whirlpool, Maytag, Kenmore, Amana, KitchenAid, Jenn-Air, Roper, and Admiral electric dryers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-card\"\u003e\n\u003ch3\u003eCommon Problems This Part Fixes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDryer produces no heat — high-limit thermostat has failed open\u003c\/li\u003e\n\u003cli\u003eDryer overheating — thermostat not opening at the correct temperature\u003c\/li\u003e\n\u003cli\u003eDryer takes too long to dry — thermistor providing incorrect temperature readings to the control board\u003c\/li\u003e\n\u003cli\u003eDryer cycling on and off erratically — thermistor fault causing incorrect cycle control\u003c\/li\u003e\n\u003cli\u003eTemperature-related error codes on models with digital displays\u003c\/li\u003e\n\u003cli\u003eMultimeter test shows open circuit on the thermostat at room temperature\u003c\/li\u003e\n\u003cli\u003eMultimeter test shows open or shorted thermistor (not ~50 ohms at room temperature)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-card\"\u003e\n\u003ch3\u003eReplaces Part Numbers\u003c\/h3\u003e\n\u003cp\u003eThis thermostat\/thermistor assembly directly replaces the following OEM and cross-reference part numbers:\u003c\/p\u003e\n\u003cp style=\"font-family: monospace; font-size: 15px; color: #0f172a; font-weight: bold; line-height: 2.2;\"\u003eWP8557403, 8557403, 1180102, AP6013164, AWP48681, EAP11746386, PD00003588, PS11746386.\u003c\/p\u003e\n\u003cp style=\"margin-top: 4px; font-size: 15px; color: #475569;\"\u003eIf your part number is not listed above, contact our support team before ordering and we will verify compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-card pom-card-blue\"\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThis high-limit thermostat and thermistor is compatible with select \u003cstrong\u003eelectric dryers only\u003c\/strong\u003e from the following brands:\u003c\/p\u003e\n\u003cul class=\"pom-list-green\"\u003e\n\u003cli\u003eWhirlpool electric dryers — Duet, WED5000, WED5500, WED5600, WED5620, WED8000, WED8200, WED8500, WED9200, WED92HEF, WED7000 series and related models\u003c\/li\u003e\n\u003cli\u003eMaytag electric dryers — MED3500, MED5630, MED6630, MED7230, MEDB835 series and related models\u003c\/li\u003e\n\u003cli\u003eKenmore \/ Sears electric dryers — 110-series (Whirlpool-built models)\u003c\/li\u003e\n\u003cli\u003eAmana electric dryers (select models)\u003c\/li\u003e\n\u003cli\u003eKitchenAid electric dryers (select models)\u003c\/li\u003e\n\u003cli\u003eJenn-Air electric dryers (select models)\u003c\/li\u003e\n\u003cli\u003eRoper electric dryers\u003c\/li\u003e\n\u003cli\u003eAdmiral electric dryers\u003c\/li\u003e\n\u003cli\u003eNorge electric dryers\u003c\/li\u003e\n\u003cli\u003eMagic Chef electric dryers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-top: 12px; font-size: 15px; color: #92400e; background: #fffbeb; border-left: 4px solid #f59e0b; padding: 10px 14px; border-radius: 0 6px 6px 0;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This part is for \u003cstrong\u003eelectric dryers only\u003c\/strong\u003e. The exhaust duct thermal fuse and cycling thermostat are separate parts — if those have also failed, they must be ordered separately. Always verify your model number before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-card\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCombined high-limit thermostat and thermistor in a single assembly — replaces both functions in one part\u003c\/li\u003e\n\u003cli\u003eHigh-limit thermostat rated L146-44C — opens at 295°F (146°C), resets automatically when cooled\u003c\/li\u003e\n\u003cli\u003eIntegrated 50-ohm NTC thermistor — continuously monitors dryer air temperature and sends readings to the control board for cycle regulation\u003c\/li\u003e\n\u003cli\u003eDimensions: 1-5\/8\"L x 1-5\/8\"W x 2\"H; approx. 1-5\/8\" between mounting holes\u003c\/li\u003e\n\u003cli\u003eBlack\/gray plastic and metal construction\u003c\/li\u003e\n\u003cli\u003eElectric dryers only — not for gas dryer models\u003c\/li\u003e\n\u003cli\u003eReplaces WP8557403, 1180102, AP6013164, EAP11746386, PD00003588, and PS11746386\u003c\/li\u003e\n\u003cli\u003eCompatible with Whirlpool Duet, Maytag MED, Kenmore, Amana, KitchenAid, Jenn-Air, Roper, Admiral, Norge, and Magic Chef electric dryers\u003c\/li\u003e\n\u003cli\u003eAftermarket replacement built to OEM-equivalent quality standards\u003c\/li\u003e\n\u003cli\u003eQuick DIY repair — installs in 15–20 minutes with basic hand tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-card\"\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable class=\"pom-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e8557403\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003eWP8557403\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Type\u003c\/td\u003e\n\u003ctd\u003eDryer High-Limit Thermostat with Integrated Thermistor Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eAftermarket Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eElectric Dryers Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermostat Rating\u003c\/td\u003e\n\u003ctd\u003eL146-44C — opens at 295°F (146°C), auto-resets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermistor\u003c\/td\u003e\n\u003ctd\u003e50-ohm NTC (at room temperature ~25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e1-5\/8\"L x 1-5\/8\"W x 2\"H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Hole Spacing\u003c\/td\u003e\n\u003ctd\u003eApprox. 1-5\/8\" center to center\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack \/ Gray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePlastic \/ Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brands\u003c\/td\u003e\n\u003ctd\u003eWhirlpool, Maytag, Kenmore, Amana, KitchenAid, Jenn-Air, Roper, Admiral, Norge, Magic Chef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-card\"\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cdiv class=\"pom-warning\"\u003e\n\u003cstrong\u003e⚠️ Unplug Dryer Before Starting — Electric Dryers Only\u003c\/strong\u003e Disconnect power before beginning. The 8557403 thermostat\/thermistor assembly is typically located on the heating element housing or duct inside the dryer — access it by removing the back panel. On Whirlpool Duet and Maytag front-load-style dryers, the component may be accessible by removing the lower front panel. Photograph all wire connections before disconnecting — the thermistor wires and thermostat wires must be reconnected to the correct terminals. Remove the two mounting screws and pull the old assembly off. Note the position and orientation before removing. Install the new 8557403 assembly in the same position and orientation, reconnect all wires, and reinstall the mounting screws and panel. Restore power and run a test heat cycle to confirm normal operation. Tools needed: Phillips screwdriver, 1\/4\" nut driver.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-card\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"pom-faq-item\"\u003e\n\u003cp class=\"pom-faq-q\"\u003eWhat makes this part unusual — why does it combine a thermostat and a thermistor?\u003c\/p\u003e\n\u003cp class=\"pom-faq-a\"\u003eThe WP8557403 is a combined assembly used on newer Whirlpool Duet and Maytag MED series dryers that use electronic temperature control rather than purely mechanical thermostats. The high-limit thermostat (L146-44C) provides the traditional safety function — it opens the circuit if dryer temperature exceeds 295°F. The integrated NTC thermistor continuously reports resistance-based temperature data to the electronic control board, which uses the data to regulate the heating element and control cycle timing. Both functions are built into a single compact housing, making this a unique part that replaces what older dryers used to handle with separate components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-faq-item\"\u003e\n\u003cp class=\"pom-faq-q\"\u003eHow do I test the thermostat and thermistor?\u003c\/p\u003e\n\u003cp class=\"pom-faq-a\"\u003eSet your multimeter to continuity or resistance mode. For the thermostat portion: probe the thermostat terminals — at room temperature, a working thermostat shows closed continuity (near-zero resistance). An open circuit at room temperature confirms the thermostat has failed. For the thermistor portion: probe the thermistor terminals — at room temperature (approximately 25°C\/77°F), a working 50-ohm NTC thermistor should read approximately 50 ohms. A reading of zero ohms (shorted) or open circuit (no continuity) confirms the thermistor has failed. Either failure mode warrants replacing the complete 8557403 assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-faq-item\"\u003e\n\u003cp class=\"pom-faq-q\"\u003eWhat is the difference between 8557403 and WP8557403?\u003c\/p\u003e\n\u003cp class=\"pom-faq-a\"\u003eThese are the same part. WP8557403 is the updated Whirlpool OEM part number that superseded the original 8557403. The 1180102 is also a cross-reference for this same assembly. This aftermarket replacement is compatible with all of these numbers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-faq-item\"\u003e\n\u003cp class=\"pom-faq-q\"\u003eDo I also need to replace the thermal fuse or cycling thermostat?\u003c\/p\u003e\n\u003cp class=\"pom-faq-a\"\u003eThe 8557403 replaces the high-limit thermostat and thermistor mounted on the heating element housing area. The exhaust duct thermal fuse (WP3392519 on most Whirlpool-family dryers) and cycling thermostat (WP3387134) are separate components located on the exhaust duct and are not included in or replaced by the 8557403. If your dryer has no heat, test all thermal components before ordering — check the 8557403 assembly, the thermal fuse, and the cycling thermostat, then order only what has failed. If an overheating event caused the high-limit to fail, the other thermal components may be stressed as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-faq-item\"\u003e\n\u003cp class=\"pom-faq-q\"\u003eIs this an OEM or aftermarket part?\u003c\/p\u003e\n\u003cp class=\"pom-faq-a\"\u003eThis is an aftermarket replacement part built to OEM-equivalent quality standards. It is not a genuine Whirlpool OEM part, but is manufactured from plastic and metal with an L146-44C thermostat and 50-ohm NTC thermistor to match the specifications and performance of the original WP8557403 assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pom-card pom-card-green\"\u003e\n\u003ch3\u003eShop With Confidence\u003c\/h3\u003e\n\u003cp\u003eA U.S.-based appliance parts retailer specializing in genuine OEM and high-quality replacement parts. We stock components for all major appliance brands and offer fast shipping from our U.S. warehouse. Our team is available to help verify compatibility before you purchase.\u003c\/p\u003e\n\u003cdiv class=\"pom-badges\"\u003e\n\u003cspan class=\"pom-badge\"\u003e✓ Fast US Shipping\u003c\/span\u003e \u003cspan class=\"pom-badge\"\u003e✓ Quality Aftermarket Parts\u003c\/span\u003e \u003cspan class=\"pom-badge\"\u003e✓ Compatibility Support\u003c\/span\u003e \u003cspan class=\"pom-badge\"\u003e✓ Secure Checkout\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"XPARTCO","offers":[{"title":"Default Title","offer_id":43248139174058,"sku":"8557403","price":11.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0055\/1675\/5018\/files\/8557403_2.jpg?v=1781654562","url":"https:\/\/parts-o-matic.com\/products\/xpartco-8557403-dryer-thermostat-replaces-wp8557403","provider":"Parts-O-Matic","version":"1.0","type":"link"}