Wix 33960XE Fuel Water Separator Filter

WIX 33960XE Fuel Water Separator Filter

The WIX 33960XE is a heavy-duty fuel water separator filter built for diesel fuel systems that need cleaner fuel and reliable water removal. It uses enhanced cellulose media with a 7 micron rating to help capture fine contaminants while supporting consistent flow in demanding service.

Compatible With Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications, this spin-on fuel water separator is sized for direct replacement service on select GM trucks and vans. The WIX 33960XE is also cross-referenced to NAPA Gold Filters 3960XE for the same application.

Key Features

• Enhanced cellulose media for contaminant holding capacity
• 7 micron filtration for fine fuel-system protection
• Spin-on fuel water separator style
• Closed top design with 3 3/8-8 thread size
• Corrosion-resistant can, center tube, and end caps
• Sealing components engineered for leak-resistant service
• 6.39 in. height and 4.02 in. outer diameter

Detailed Description

Built for diesel fuel filtration, the WIX 33960XE helps separate water from fuel while trapping dirt and other contaminants before they reach sensitive injection components. Its enhanced cellulose media is paired with durable metal construction to support long service life in HD use. This part number, 33960XE, is a practical OE-style replacement for select Chevrolet Express, Chevrolet Silverado HD, GMC Savana, and GMC Sierra HD models across the 2001-2016 range.

What It Helps Address

• Water contamination in diesel fuel
• Premature wear in fuel system components
• Restricted fuel flow from dirty filter media
• Hard starting caused by contaminated fuel
• Service issues related to worn or leaking separator housings

Installation Notes and Tips

Verify thread size, height, and housing style before installation. Prime and bleed the fuel system according to the vehicle service procedure after replacement, and inspect sealing surfaces for debris or damage. For fitment verification, confirm the vehicle’s original equipment part number against the application listing for Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, and related GM diesel models.

Quality Assurance

WIX designs this fuel water separator with corrosion-resistant components and superior sealing materials to support leak-resistant operation in HD service. The manufacturer describes the media and housing construction as engineered for strong contaminant retention and dependable water removal.