WIX Filters 33682 C44 Diesel Engine In-Line Fuel Filter

The WIX 33682 diesel spin-on fuel filter delivers dependable injector protection by removing dirt, rust, and water from heavy‑duty fuel systems, safeguarding injectors, fuel pumps, and engine components in Cummins QSB 6.7L‑powered equipment. It uses an enhanced cellulose filtration media with a nominal 7 micron rating and is designed for heavy‑duty diesel filtration, supporting a maximum flow of 8–10 GPM and a minimum flow of 37.853 L/min. The unit measures 6.95 inches in height with a top outer diameter of 3.73 inches and features an M20 x 1.5 thread for mounting; it is a spin‑on design with no by‑pass, anti‑drain, or anti‑siphon valves. Compatible engines include Cummins QSB 6.7L, and it is commonly installed in Case, Hyundai, New Holland, and Ammann equipment across construction, agriculture, industrial machinery, and fleet maintenance applications. For reference, it cross‑references NAPA Gold 3682 and matches OEM equivalents Fleetguard FF5421, Donaldson P550880, and Baldwin BF7922.