Standard Ignition FWSS116 Water in Fuel (WiF) Sensor

Water in Fuel Sensor for Diesel Applications

The Standard Ignition FWSS116 is a direct-fit water in fuel sensor for diesel fuel systems. It is built for proper fit, form, and function, helping support a trouble-free installation on select Chevrolet Express, Silverado HD, GMC Savana, and Sierra HD diesel models.

Designed for OE-style replacement service, the FWSS116 uses durable materials and a certified manufacturing process to support reliable operation in harsh engine environments. This part number is also referenced as FWSS116 for easy catalog matching.

Key Features

• Direct-fit OE replacement for diesel water in fuel sensor service
• Male connector with oval plug-in design
• 1 connector, 2 female blade terminals
• Screw-in mounting style for service replacement
• Built with premium components for durability in demanding engine conditions
• Tested and validated for proper performance and reliability

Detailed Description

Standard Ignition FWSS116 is a Water In Fuel (WiF) Sensor designed for diesel fuel delivery systems where moisture detection is critical. It is engineered as an OE replacement to match the original fit and electrical connection, helping maintain accurate sensor function in the fuel system. This part is a strong match for drivers searching for a diesel water in fuel sensor for 2012-2016 Chevrolet Express 2500, 2012-2016 Chevrolet Express 3500, 2012-2016 Chevrolet Silverado 2500 HD, 2012-2016 Chevrolet Silverado 3500 HD, 2012-2016 GMC Savana 2500, 2012-2016 GMC Savana 3500, 2012-2016 GMC Sierra 2500 HD, and 2012-2016 GMC Sierra 3500 HD. This part cross-references Dorman OE Solutions 904-439 for the same application.

Common Issues It Can Help Address

• Water contamination warning in the diesel fuel system
• Faulty or inconsistent water-in-fuel sensor readings
• Illuminated fuel system or engine warning indicators tied to moisture detection
• Replacement needs after sensor wear, corrosion, or connector damage
• Service repair on diesel trucks and vans with OE-style sensor mounting

Installation Notes and Tips

Verify connector shape, terminal style, and screw-in mounting before installation. The FWSS116 uses a male oval plug-in connector with two female blade terminals and does not include a gasket. Confirm the vehicle’s diesel fuel system configuration and match the original sensor location before replacement. For fitment-focused searches, this part is commonly selected for 2012-2016 Chevrolet Silverado 2500 HD and 2012-2016 GMC Sierra 3500 HD diesel applications.

Quality Assurance

Standard Ignition manufactures this sensor to stringent quality standards at a certified facility and validates it through extensive testing for proper performance. The FWSS116 is built with durable materials intended to withstand harsh engine conditions and support long service life.