Wix Inline Fuel Filter 5/16-inch (50 Micron) Universal Plastic for Gasoline and Diesel

WIX 33972 is a universal in-line plastic fuel filter with 5/16" inlet/outlet and 50-micron media, designed to remove contaminants from gasoline and diesel fuel.

This compact, lightweight WIX fuel filter fits many passenger cars and light trucks as an aftermarket replacement or service-upgrade part. Its plastic housing and pleated media trap particles such as dirt, rust, and scale commonly found in older tanks and at some service stations, helping preserve injectors and fuel system components. Packaged individually and built for straightforward inline installation, the 33972 is a practical option when you need a dependable, easy-to-install filter for routine maintenance.

How does this WIX filter protect fuel injection components?

The 50-micron filtering element captures fine particles before they reach fuel injectors and pumps. By removing abrasive debris and visible rust, it reduces wear on moving parts and helps maintain consistent fuel flow under normal driving conditions.

• 50-micron pleated media to trap small contaminants
• Plastic housing resists corrosion from ethanol-blended fuels
• Universal inline design suits 5/16" fuel lines for easy replacement

Will this filter work with my gasoline or diesel vehicle?

The WIX 33972 is specified for use with both gasoline and diesel fuels, making it versatile for many applications in passenger cars and light trucks. Ensure your vehicle uses a 5/16" (approx. 8 mm) fuel line and check manufacturer recommendations for inline filter placement.

• Compatible with gasoline and diesel fuel systems
• Designed for 5/16" inlet and outlet hose connections
• Package includes one individually boxed filter for single replacements

How simple is installation and routine replacement?

Installation is straightforward for most DIYers: depressurize the fuel system per vehicle guidelines, remove a short section of fuel line, and insert the filter with proper flow direction. Because it’s a universal in-line unit, replacement intervals depend on driving conditions and fuel quality rather than a vehicle-specific schedule.

• Inline design requires basic hand tools and hose clamps
• Follow vehicle safety steps to relieve fuel pressure first
• Replace when fuel flow is restricted or per maintenance checks

What are the construction and sourcing details?

The WIX 33972 combines a durable plastic housing with a pleated filtration element designed for long service life in normal operating environments. The unit is manufactured in China and is packaged individually for single replacements or stocking.

• Plastic body for corrosion resistance with ethanol fuels
• Packaged individually for convenient storage and service use
• Produced to WIX filtration standards for passenger cars and light trucks

Who is this for? The WIX 33972 suits vehicle owners, independent mechanics, and fleet operators who need a reliable, universal inline fuel filter for gasoline or diesel systems that use 5/16" fuel lines. It’s a good choice when you want a simple, cost-effective replacement to protect fuel pumps and injectors from common contaminants, especially in older vehicles or equipment exposed to variable fuel quality.