{"product_id":"604-938-1638200108-hvac-blend-door-actuator","title":"604-938 1638200108 HVAC Blend Door Actuator Heater Air Door Actuator Replacement","description":"\u003cp data-start=\"223\" data-end=\"513\"\u003eRestore proper airflow and temperature control in your vehicle with this high-quality \u003cstrong data-start=\"309\" data-end=\"337\"\u003eHVAC blend door actuator\u003c\/strong\u003e, designed as a direct replacement for part numbers \u003cstrong data-start=\"389\" data-end=\"400\"\u003e604-938\u003c\/strong\u003e and \u003cstrong data-start=\"405\" data-end=\"419\"\u003e1638200108\u003c\/strong\u003e. This actuator controls the air mix between hot and cold air, ensuring optimal cabin comfort.\u003c\/p\u003e\n\u003ch3 data-section-id=\"unzlau\" data-start=\"515\" data-end=\"535\"\u003e🔧 Key Features:\u003c\/h3\u003e\n\u003cul data-start=\"536\" data-end=\"940\"\u003e\n\u003cli data-section-id=\"ugpx2c\" data-start=\"536\" data-end=\"610\"\u003e\n\u003cstrong data-start=\"538\" data-end=\"558\"\u003eOEM Replacement:\u003c\/strong\u003e Compatible with part numbers 604-938 \u0026amp; 1638200108\u003c\/li\u003e\n\u003cli data-section-id=\"miz93a\" data-start=\"611\" data-end=\"704\"\u003e\n\u003cstrong data-start=\"613\" data-end=\"641\"\u003ePrecise Airflow Control:\u003c\/strong\u003e Regulates heater and AC air blend for consistent temperature\u003c\/li\u003e\n\u003cli data-section-id=\"1ru08ha\" data-start=\"705\" data-end=\"792\"\u003e\n\u003cstrong data-start=\"707\" data-end=\"737\"\u003eImproved HVAC Performance:\u003c\/strong\u003e Restores proper air distribution and climate control\u003c\/li\u003e\n\u003cli data-section-id=\"sudyg7\" data-start=\"793\" data-end=\"880\"\u003e\n\u003cstrong data-start=\"795\" data-end=\"820\"\u003eDurable Construction:\u003c\/strong\u003e Built with premium materials for long-lasting reliability\u003c\/li\u003e\n\u003cli data-section-id=\"1o73zu1\" data-start=\"881\" data-end=\"940\"\u003e\n\u003cstrong data-start=\"883\" data-end=\"905\"\u003eEasy Installation:\u003c\/strong\u003e Direct fit, plug-and-play design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1oubqj0\" data-start=\"942\" data-end=\"961\"\u003e🚗 Application:\u003c\/h3\u003e\n\u003cul data-start=\"962\" data-end=\"1118\"\u003e\n\u003cli data-section-id=\"1u9y4pe\" data-start=\"962\" data-end=\"1061\"\u003eSuitable for select Mercedes-Benz and other compatible vehicles (please verify before purchase)\u003c\/li\u003e\n\u003cli data-section-id=\"1n43dcw\" data-start=\"1062\" data-end=\"1118\"\u003eIdeal replacement for faulty or noisy HVAC actuators\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n  \u003ch2\u003eProduct FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this Blend Door Actuator fit my vehicle?\u003c\/summary\u003e\n    \u003cp\u003eThis product is intended for vehicles that match the OE part number and application details shown on this page. Please compare your original part with 604-938, 1638200108, and verify the connector, mounting points, and fitment for the listed vehicle application before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich part number should I use to confirm compatibility?\u003c\/summary\u003e\n    \u003cp\u003eUse the OE or replacement part number on your original component first. For this listing, compare against: \u003cstrong\u003e604-938, 1638200108\u003c\/strong\u003e. Matching the part number is usually more reliable than matching only the model name or year range.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat symptoms can this part help solve?\u003c\/summary\u003e\n    \u003cp\u003eA failing Blend Door Actuator may be related to wrong air temperature, clicking behind the dash, or air not switching between vents correctly. Always confirm the diagnosis with scan-tool data, fault codes, or a technician inspection before replacing the part.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat should I check before purchase?\u003c\/summary\u003e\n    \u003cp\u003ePlease check the shaft position, plug type, rotation direction, and HVAC box location. Small differences in plugs, brackets, sensor position, or production year can affect fitment even when the vehicle model looks similar.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a new replacement part?\u003c\/summary\u003e\n    \u003cp\u003eYes, this listing is for a new replacement auto part supplied by Staceedress Auto Parts. Keep the original part until installation is complete so you can compare the shape and connector side by side.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e","brand":"Staceedress Auto Parts","offers":[{"title":"Default Title","offer_id":46700594430105,"sku":null,"price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/2847\/8105\/files\/1_2381ebb7-653d-40f0-9d06-0c5f9026d3a5.jpg?v=1774171494","url":"https:\/\/staceedress.com\/products\/604-938-1638200108-hvac-blend-door-actuator","provider":"Staceedress Auto Parts","version":"1.0","type":"link"}