Bergstrom 651258 HVAC Heater Actuator 12V (120 Degree) | Fits Kenworth T680, T880 & Peterbilt 579 | Replaces MEI 10-1042 & Kysor A35111573A | Blend Door & Recirculation Motor

Heater Blend Door Motor compatible with Kenworth T680 & Peterbilt 579.The Bergstrom 651258 is the OEM actuator used to control the airflow and temperature inside the modern PACCAR cab. If your driver cannot change the temperature (stuck hot/cold) or hears a constant Clicking Noise behind the dash, this actuator is the likely failure point.Why Specs Matter: This unit features a specific 120° Rotation. Installing a standard auto parts store actuator will not open the vent fully and may damage the HVAC box.Compatible Applications (2013–Present): Compatible with Kenworth: T680, T880, W990 Compatible with Peterbilt: 579, 567 Function: Blend Door (Temp), Recirculation Door, or Mode Door (Check Part Number)Technical Specifications: Voltage: 12V DC Rotation: 120° Counter-Clockwise (CCW) Connector: 4-Pin Replaces: MEI 10-1042

• FIXES "CLICKING" DASH NOISE: Replacement Bergstrom 651258 Actuator. The primary solution for the "Ticking" or "Clicking" sound coming from the dashboard of Kenworth and Peterbilt trucks, often caused by stripped internal gears in the original blend door motor.
• FITS T680 & PETERBILT 579: Specifically designed for the modern PACCAR cab platform. Compatible with Kenworth T680, T880, W990 and Peterbilt 579, 567 models (2013-Current). Common application for Temperature Control (Blend Door) or Fresh Air/Recirculation doors.
• 120-DEGREE ROTATION (CCW): Engineered with the specific 120-degree Counter-Clockwise rotation required for PACCAR HVAC boxes. Using a generic 90-degree actuator will break the internal door flaps or cause calibration errors.
• HEAVY-DUTY GEARING: Sealed high-impact housing protects the internal gears and circuit board from the constant vibration and temperature fluctuations of the heavy-duty trucking environment.
• DIRECT CROSS REFERENCE: Exact interchange for MEI Airsource 10-1042, Kysor A35111573A, and Bergstrom 1000373739. Features standard 4-Pin Tyco-style connector.