{"product_id":"dorman-604-991-hvac-blend-door-actuator","title":"Dorman 604-991 HVAC Blend Door Actuator","description":"\u003ch2\u003eHVAC Blend Door Actuator for Select Ford, GM, and Mercedes-Benz\u003c\/h2\u003e\u003cp\u003eDorman 604-991 is a precision-engineered HVAC blend door actuator designed to restore temperature and airflow control in select vehicles. It is built to simplify replacement on applications where access is tight and correct part selection matters, including Ford Fusion, Lincoln MKZ, Mercury Milan, and several Cadillac, Chevrolet, GMC, and Mercedes-Benz models.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRotary actuator design for HVAC blend door control\u003c\/li\u003e\n\u003cli\u003eBlack plastic housing and black connector\u003c\/li\u003e\n\u003cli\u003eFemale connector with 5 terminals\u003c\/li\u003e\n\u003cli\u003e3 mounting holes for secure installation\u003c\/li\u003e\n\u003cli\u003eCaptive screws help keep fasteners in place during alignment\u003c\/li\u003e\n\u003cli\u003eDesigned to consolidate multiple original equipment applications into one service part\u003c\/li\u003e\n\u003cli\u003ePart number 604-991 for fast identification and ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThis HVAC blend door actuator is engineered to replace a malfunctioning air door or blend door actuator in vehicles that use a rotary-style HVAC control motor. Dorman developed this part family to reduce fitment confusion across closely related OE applications and to support a more exact installation. The compact plastic body measures 3.7 inches long, 3.2 inches wide, and 1.43 inches high, with a female connector, pin terminals, and no actuator arm included. For buyers searching for a Ford Fusion blend door actuator, Lincoln MKZ HVAC actuator, or Mercedes-Benz ML320 blend door actuator, Dorman 604-991 provides a direct replacement path when matched to the listed fitment.\u003c\/p\u003e\u003cp\u003eThis part cross-references Standard Ignition ADR100 and TechSmart F04001 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInconsistent cabin temperature from a stuck blend door\u003c\/li\u003e\n\u003cli\u003eNoisy or unresponsive HVAC temperature adjustment\u003c\/li\u003e\n\u003cli\u003eAirflow that remains on one temperature setting\u003c\/li\u003e\n\u003cli\u003eHVAC control issues caused by a worn actuator motor\u003c\/li\u003e\n\u003cli\u003eReplacement confusion when multiple similar actuators are listed\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the vehicle’s year, make, model, and actuator position before ordering. This part is listed for Main and Left Main positions depending on application, so match the fitment details carefully. Because blend door actuator replacement can require access behind the dashboard or within the HVAC case, confirm connector style, terminal count, and mounting-hole layout before installation. The captive-screw design is intended to make alignment easier during installation in tight spaces.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman designed and tested this actuator for exact fitment on the listed applications, with attention to installation consistency and application matching. The part is built to help reduce repeat repairs by using a consolidated OE-style design for select Ford, Lincoln, Mercury, Cadillac, Chevrolet, GMC, Mercedes-Benz, Buick, and Oldsmobile vehicles.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2006-2012 Ford Fusion, Main\u003c\/li\u003e\n\u003cli\u003eFits 2007-2012 Lincoln MKZ, Main\u003c\/li\u003e\n\u003cli\u003eFits 2006-2011 Mercury Milan, Main\u003c\/li\u003e\n\u003cli\u003eFits 2006 Lincoln Zephyr, Main\u003c\/li\u003e\n\u003cli\u003eFits 2002-2005 Cadillac DeVille, Main\u003c\/li\u003e\n\u003cli\u003eFits 2001 Cadillac DeVille, Left Main\u003c\/li\u003e\n\u003cli\u003eFits 2003-2005 Mercedes-Benz ML350, Main\u003c\/li\u003e\n\u003cli\u003eFits 2002-2005 Mercedes-Benz ML500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1998-2003 Mercedes-Benz ML320, Main\u003c\/li\u003e\n\u003cli\u003eFits 2000-2003 Mercedes-Benz ML55 AMG, Main\u003c\/li\u003e\n\u003cli\u003eFits 1999-2001 Mercedes-Benz ML430, Main\u003c\/li\u003e\n\u003cli\u003eFits 1990-1996 Chevrolet Corvette, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 Chevrolet Blazer, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 Chevrolet C1500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 Chevrolet C1500 Suburban, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 Chevrolet C2500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 Chevrolet C2500 Suburban, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 Chevrolet C3500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 Chevrolet K1500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 Chevrolet K1500 Suburban, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 Chevrolet K2500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 Chevrolet K2500 Suburban, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 Chevrolet K3500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 GMC C1500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 GMC C1500 Suburban, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 GMC C2500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 GMC C2500 Suburban, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 GMC C3500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 GMC K1500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 GMC K1500 Suburban, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 GMC K2500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 GMC K2500 Suburban, Main\u003c\/li\u003e\n\u003cli\u003eFits 1988-1994 GMC K3500, Main\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 GMC Yukon, Main\u003c\/li\u003e\n\u003cli\u003eFits 1991-1993 Buick Roadmaster, Main\u003c\/li\u003e\n\u003cli\u003eFits 1993 Cadillac Commercial Chassis, Main\u003c\/li\u003e\n\u003cli\u003eFits 1993 Cadillac Fleetwood, Main\u003c\/li\u003e\n\u003cli\u003eFits 1991-1992 Oldsmobile Custom Cruiser, Main\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52778772693173,"sku":"BKKY-604-991","price":49.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_604991_Fro.jpg?v=1783577761","url":"https:\/\/www.partcatalog.com\/products\/dorman-604-991-hvac-blend-door-actuator","provider":"PartCatalog","version":"1.0","type":"link"}