Fuel Filter Water Sensor Switch for Toyota LandCruiser 80 100 HDJ HZJ Series OEM replacement to protect your engine from water contamination and improve diesel performance. Designed to detect water accumulation in the fuel filter, it alerts you before water enters the engine and causes damage. A direct-fit replacement that ensures proper filtration system function and long-term reliability.

 

Compatibility:

• for Toyota LandCruiser 80 100 Series HDJ HZJ 1HD - FT 1HD 1HZ Engine                                    
• for Toyota LandCruiser HZJ80, HDJ80, HDJ100, HZJ105, UZJ100                                    
• for Toyota LandCruiser FZJ10*, HDJ100, HZJ105, UZJ100  01/1998 - 08/2007                                    
• for Toyota LandCruiser FJ80, HDJ80, HZJ80, FZJ80 01/1990 - 11/2006                                    
• for Toyota LandCruiser HDJ100R 2000 - 2007 (GXL, GXL Advantage Limited Edition, GXV, Kakadu GXL, Sahara, VX)
• for Toyota LandCruiser HDJ80R 1990 - 1998 (40th Anniversary, GXL, Sahara)
• for Toyota LandCruiser HZJ80R 1990 - 1998 (40th Anniversary, DX, GXL, Standard)

 

Reference OEM: 8446160050, 84461 60050, 84461-60050

 

IMPORTANT NOTE: Before purchasing, be sure to check OEM numbers and photos

 

Key Features:

• Accurate Water Detection – Identifies water buildup in diesel fuel filters, preventing injector damage and poor combustion.
• OEM-Compatible Replacement – Matches original sensor specifications; easy plug-and-play installation with no modifications needed.
• Durable Construction – Built with high-grade plastic and corrosion-resistant connectors for reliable performance in harsh conditions.
• Improved Engine Protection – Helps avoid rusting of internal components and reduces chances of costly fuel system repairs.
• Check Engine Light Reset – Replaces faulty sensor that triggers water-in-fuel warning or CEL.

 

Specification:

• Model: Fuel Filter Water Sensor Switch
• Material: ABS
• Connector: 2 pins

 

Installation Instructions:

• Turn off the engine and disconnect the battery.
• Locate the fuel filter housing (usually near the engine bay or chassis).
• Disconnect the old sensor connector and unscrew the sensor from the filter base.
• Clean contact area and install the new sensor using the correct seal.
• Reconnect wiring and check for proper sensor operation.

Important tips: installation requires access to the fuel filter - it may require jacking up the car, removing the trim, and careful tightening. Wiring must be clean and checked

 

Symptoms of a Faulty Fuel Filter Water Sensor Switch:

• Water-in-fuel warning light stays on
• Check Engine Light (CEL)
• Engine hesitation or poor acceleration
• Corroded or rusted fuel injectors
• Poor fuel economy or smoky exhaust

 

Package includes: Fuel Filter Water Sensor Switch