Wix 33621 Fuel Water Separator Filter

WIX 33621 Fuel Water Separator Filter

The WIX 33621 is a spin-on fuel water separator filter built for heavy-duty fuel systems that need cleaner fuel and reliable water removal. It uses enhanced cellulose media with a 30-micron rating to help capture contaminants while supporting long service life in demanding diesel applications.

For buyers searching for a WIX fuel water separator filter 33621, this part is built with corrosion-resistant components and sealing materials that support leak-resistant operation. It is a practical choice for heavy-duty trucks and equipment where fuel cleanliness matters.

Key Features

• Spin-on fuel water separator filter with 1-14 thread size
• Enhanced cellulose media for contaminant holding capacity
• 30-micron filtration rating
• 5.520-inch height and 3.670-inch outer diameter
• Closed top design with heavy-duty construction
• Corrosion-resistant can, center tube, and end caps
• Sealing components engineered for leak-resistant performance

Detailed Description

WIX part number 33621 is designed for fuel systems that require water separation along with particulate filtration. The enhanced cellulose media helps remove water and debris from diesel fuel, supporting cleaner fuel delivery to injectors and other sensitive components. This filter is built with a high-strength can, center tube, and end caps to handle demanding service conditions.

Cross-reference part numbers include Fleetguard FS19592 and NAPA Gold 3621 for the same application. Buyers comparing fuel water separator filter options for diesel truck maintenance often search by WIX 33621, 33621 fuel filter, and WIX HD fuel water separator filter.

What It Helps Address

• Water contamination in diesel fuel
• Fine debris that can affect fuel system performance
• Reduced filtration efficiency from a worn separator element
• Leak concerns at the filter housing or sealing surfaces
• Service issues tied to dirty fuel in heavy-duty truck applications

Installation Notes and Tips

Verify the 1-14 thread size, 5.520-inch height, and 3.670-inch outer diameter before installation. Confirm the filter style and sealing interface match the existing fuel water separator housing, and follow the vehicle service procedure for priming and bleeding the fuel system after replacement. For fitment-based searches, this part is commonly referenced for heavy-duty diesel truck fuel system service, including WIX 33621 applications and related fuel water separator maintenance on compatible truck platforms.

Quality Assurance

WIX builds this fuel water separator with corrosion-resistant metal components and sealing materials selected for long-lasting, leak-resistant service in heavy-duty use. The filter media and construction are engineered to support consistent water separation and contaminant capture in demanding diesel fuel systems.