for 2020 Through 2023 Cummins X15 Engines

FF5971NN is a screw-on type fuel filter, specially designed for heavy-duty engines, providing efficient filtration protection.Suitable for Cummins L9, ISL9, B6.7, ISB6.7 engines, as well as X15 engines of brands such as Freightliner, International, Kenworth, Peterbilt, Spartan Motors, Volvo, and Western Star.