Wix 33966 Fuel Filter - Secondary

Reliable Fuel Filtration for Heavy-Duty Vehicles

The Wix 33966 fuel filter is designed to provide consistent fuel cleanliness and protect your engine from contaminants. Engineered with enhanced cellulose media, this spin-on fuel filter supports flow rates between 8 to 10 gallons per minute, making it suitable for various heavy-duty applications.

• Beta Ratio B5=75 for efficient particle retention
• Heavy-duty (Hd) duty type for demanding environments
• Filter area of 688 square inches for extended service life
• 5 micron filtration rating to capture fine contaminants
• Spin-on style with 20x1.5 mm thread size for secure installation
• Height of 7.22 inches and outer diameter of 3.69 inches
• Enhanced cellulose media for reliable fuel filtration

Technical Details and Performance

The Wix 33966 fuel filter features a 5 micron rating, effectively filtering out small particles that can cause engine wear and reduce performance. Its enhanced cellulose media provides a balance of filtration efficiency and flow capacity, supporting flow rates from 8 to 10 gallons per minute. The filter’s Beta Ratio B5=75 indicates its ability to remove 75% of particles at 5 microns, ensuring cleaner fuel delivery. Designed as a spin-on filter with a 20x1.5 mm thread size, it offers straightforward installation and replacement. The filter’s dimensions, including a height of 7.22 inches and an outer diameter of 3.69 inches, make it compatible with a range of heavy-duty vehicles requiring Ha class fuel filters.

Compatible Vehicles and Applications

This Wix 33966 fuel filter is compatible with various heavy-duty trucks and commercial vehicles that require a Ha class fuel filter with a 5 micron rating and spin-on style. It is commonly used in diesel engines where reliable fuel filtration is critical to maintaining engine performance and longevity.

• Protects against fuel system contamination and clogging
• Prevents premature injector wear and engine damage
• Reduces risk of fuel pump failure due to debris
• Maintains consistent fuel flow for optimal engine operation
• Helps avoid costly repairs related to fuel contamination

Installation Notes and Tips

When installing the Wix 33966 fuel filter, ensure the engine is off and cooled down. Verify the thread size (20x1.5 mm) matches the vehicle’s filter mount. Apply a thin layer of clean fuel or oil to the gasket to ensure a proper seal. Tighten the filter according to manufacturer specifications to avoid leaks. Regular replacement intervals should be followed based on vehicle manufacturer recommendations and operating conditions.

Quality Assurance and Warranty

Wix filters are manufactured to meet industry standards for filtration performance and durability. The 33966 fuel filter undergoes rigorous testing to ensure consistent quality. While specific warranty details are not provided here, Wix typically offers warranties covering defects in materials and workmanship. Consult Wix or vehicle manufacturer documentation for exact warranty terms.