Maintain accurate engine temperature control with this Genuine Nissan Patrol GU Y61 Radiator Thermal Switch Sensor, designed for TD42 and TD42T engine variants. This OEM sensor is mounted in the lower radiator tank and plays a critical role in monitoring coolant temperature and triggering auxiliary cooling fan operation when required.

Over time, thermal switch sensors can fail due to age, corrosion, or internal electrical wear. A faulty sensor may send incorrect temperature signals or fail completely, resulting in delayed or non-functional cooling fan activation. This can lead to engine overheating, especially during towing, low-speed driving, or off-road conditions.

Manufactured to genuine Nissan specifications, this direct-fit replacement ensures accurate temperature readings, reliable fan activation, and long-term durability in demanding Australian conditions.

Features & Benefits

• Genuine Nissan OEM part for exact fitment and factory reliability
• Designed specifically for Nissan Patrol GU Y61 TD42 & TD42T cooling systems
• Mounted in radiator for accurate coolant temperature detection
• Controls auxiliary electric fan operation for optimal cooling
• Helps prevent engine overheating under load or off-road use
• Precision-engineered for accurate and consistent temperature response
• Durable construction for resistance to heat, coolant, and corrosion
• Direct replacement with no modifications required

Vehicle Fitment

• Nissan Patrol GU Y61 (TD42 & TD42T engines)

Please confirm compatibility before purchase or contact with your VIN for assistance.

Common Signs of a Failing Thermal Switch Sensor

• Electric fan not switching on when engine is hot
• Engine running hotter than normal under load or towing
• Intermittent or inconsistent fan operation
• Overheating at low speeds or in traffic
• Fault codes or irregular temperature readings (where applicable)

Replacing a faulty radiator thermal switch sensor is essential to maintain proper cooling system operation and prevent overheating-related engine damage.