Wix 33960 Fuel Water Separator Filter

WIX 33960 Fuel Water Separator Filter

The WIX 33960 is a spin-on fuel water separator filter built for heavy-duty diesel fuel systems. It uses enhanced cellulose media with a 7 micron rating to help remove water and fine contaminants, supporting cleaner fuel delivery in demanding service.

Key Features

• Enhanced cellulose media for contaminant holding capacity
• 7 micron filtration for fine particle removal
• Spin-on fuel water separator design
• Corrosion-resistant can, center tube, and end caps
• Superior sealing components for leak-resistant service
• Thread size: 3 3/8-8
• Height: 6.3 in; outer diameter top: 3.96 in; outer diameter bottom: 3.47 in

Detailed Description

WIX part number 33960 is engineered as a fuel water separator filter for heavy-duty applications where water intrusion and fuel contamination can affect performance. The enhanced cellulose media is designed to retain debris while separating water from fuel, helping maintain cleaner fuel flow through the system. Its corrosion-resistant construction and sealing components support long service life in HD use. This part cross-references NAPA Gold Filters 3960 for the same application. Compatible With Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD diesel fuel filtration applications.

Common Issues It May Address

• Water contamination in diesel fuel
• Restricted fuel flow from a loaded filter
• Fine debris reaching fuel system components
• Leak concerns at the filter seal
• Reduced filtration performance in heavy-duty service

Installation Notes and Tips

Verify the thread size, height, and outside diameters before installation. Replace the filter at the service interval recommended for the vehicle and inspect the sealing surfaces for debris before spinning the new filter into place. If the system uses a drain feature, follow the vehicle service procedure for purging collected water.

Quality Assurance

WIX designs this fuel water separator filter with corrosion-resistant components and superior sealing materials to support reliable service in heavy-duty diesel applications. Confirm fitment against the vehicle’s original part number and filter dimensions before ordering. Fits 2001-2009 Chevrolet Silverado 2500 HD, 2001-2003 Chevrolet Silverado 3500, 2005-2006 Chevrolet Silverado 3500, 2007-2009 Chevrolet Silverado 3500 HD, 2001-2009 GMC Sierra 2500 HD, and 2001-2006 GMC Sierra 3500.