Carquest Premium Fuel Filter is built to keep modern diesel systems performing at their best by removing both water and particulate contaminants before they can damage injectors or reduce efficiency. Manufactured to meet or exceed OE standards, this filter provides reliable protection and long service life under heavy-duty operating conditions. Proudly made in the USA, it is engineered for durability and consistent performance. Specifications include a fuel/water separator element designed for medium-duty diesel applications, with high-efficiency media for effective water separation and particulate removal. Cross-references include WIX 33719, NAPA 3719, Fleetguard FS19684/FS19684E, Donaldson P550657, Fram CS9970, Purolator F55966, and Luber-Finer L9684F. Commonly used in International/Navistar medium-duty trucks, Mack trucks, Freightliner M2, school buses, and various agricultural diesel equipment applications. Disclaimer: The information provided, including specifications, cross-references and vehicle applications, is for reference only. Variations may exist by application, engine, and OE system requirements such as thread type, fuel compatibility, micron rating, and pressure ratings. Customers are responsible for verifying all physical specifications (dimensions, thread size, fitment, etc.) before ordering. Low Country Filters is not liable for incorrect part orders.
