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The Wix Filters 33109 is a high-efficiency spin-on fuel filter designed for heavy-duty and medium-duty engines. It functions to remove contaminants including dirt, rust, and particulates from diesel fuel, helping protect fuel systems and injection components in demanding applications.
Construction features include a durable spin-on steel canister with corrosion-resistant end caps, center tube, and sealing components. The filtration media is enhanced cellulose rated at 10 microns nominal. The thread size is precisely 1-14, with overall dimensions—height approximately 5.209 in (132 mm) and top outside diameter about 3.663 in (93 mm). Burst pressure is rated at 325 PSI.
This filter delivers real-world benefits such as extended service intervals, consistent flow (approximately 12-15 gallons per minute), and reliable sealing under high operating pressure. It is intended as an OE-style replacement for engines in trucking, off-highway, construction, farming, mining, and other industrial applications requiring robust fuel filtration.