AA Ignition Air Mix Actuator for Infiniti Q50/Q60 Left Side 2014–2020 — Direct-Fit, Upgraded Circuit Board

AA Ignition's left-side air mix actuator is a direct-fit replacement that restores driver-side temperature control and airflow balance in Infiniti Q50 and Q60 models from 2014–2020.

If your Infiniti's driver-side HVAC temperature no longer matches the dash setting, or you hear clicking from under the dash when changing heat or AC, the blend door actuator is a likely cause. This aftermarket unit replaces factory part numbers 27730-4GF0A and 27732-4GF0B and is built with a reinforced housing and upgraded circuit board to improve longevity and consistent operation. It installs in the original mounting location and connects to the factory harness, offering a practical repair for faulty temperature blending on the driver side.

How will this actuator fix uneven or incorrect cabin temperatures?

The actuator adjusts the blend door that mixes hot and cold air for the driver side, so replacing a failing unit restores precise temperature control. Once installed, the HVAC system can again direct the correct mix of warm and cool air to match your climate settings.

• Direct-fit replacement for the left-side blend door actuator in Infiniti Q50 (2014–2020) and Q60 (2017–2020).
• Replaces part numbers 27730-4GF0A and 27732-4GF0B used on factory assemblies.
• Upgraded circuit board and durable housing reduce repeat failures.
• Plugs into factory wiring—no splicing required for most installs.

What symptoms indicate the actuator is failing?

Common signs include clicking or popping noises from the dash, inability to change driver-side temperature, or air that stays cold or hot regardless of control input. These symptoms appear when the internal gears or electronics lose synchronization with the HVAC controls.

• Audible clicking/popping during temperature adjustments.
• Driver-side temperature not responding or stuck at one setting.
• Inconsistent airflow direction or temperature between driver and passenger sides.

How straightforward is installation for a DIYer or a technician?

Installation is generally straightforward for anyone comfortable with basic dash access and simple electrical connectors. The actuator mounts in the factory location and connects to the OEM harness; minor trim removal may be required to reach the unit.

• No special programming is usually required—standard plug-and-play connection.
• Common hand tools and light dash panel removal are typically all that’s needed.
• Installation guides or OEM service manuals can speed the process and prevent damage.

What quality and warranty can I expect from this AA Ignition unit?

Although this is an aftermarket part and not original equipment, AA Ignition builds this actuator with improved internal electronics and sturdy housing to match or exceed the service life of many factory units. The company backs the product with a lifetime warranty, simplifying replacement if the part fails under normal use.

• Manufactured as a direct replacement with enhanced circuit board for durability.
• Lifetime warranty—contact AA Ignition for warranty service and details.
• Meant to be a cost-effective alternative to dealer-priced OEM parts.

Who is this for? This left-side air mix actuator is aimed at Infiniti Q50 and Q60 owners (2014–2020 Q50, 2017–2020 Q60) who are experiencing driver-side temperature or airflow problems, DIY mechanics seeking a reliable direct-replacement part, and independent shops needing a durable, warrantied actuator that replaces 27730-4GF0A / 27732-4GF0B. If you want to restore balanced HVAC performance without dealer lead times, this AA Ignition actuator offers a practical repair path backed by coverage for long-term peace of mind.