Walker Products Engine Coolant Temperature Sensor 211-2129 for 2007 Mazda 3.5L (CX-9)

The Walker Products Engine Coolant Temperature Sensor (part number 211-2129) is a direct-fit replacement for 2007 Mazda vehicles with 3.5L engines. Walker Products Engine Coolant Temperature Sensors match OE performance to deliver accurate data for engine protection, fuel control, and emissions management.

Features:

• Direct-fit replacement simplifies installation and restores sensor function.
• Built to match OE specifications for signal response and thermal accuracy.
• Monitors engine coolant temperature to optimize fuel delivery and ignition timing.
• Enables ECM to protect engine from overheating and improve cold starts.
• Durable materials ensure long service life in hot, high-vibration environments.

Specifications:

Fits: 2007 Mazda models including CX-9 — 3.5L engines.

Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.

WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.