The Toyota 23390-0L041 fuel filter (also known as 23390-YZZA1) is a high-efficiency diesel filter designed for Toyota diesel engines, featuring a dual-stage system to remove contaminants and water. It fits various models including the Hilux (2005–2015), Fortuner, Hiace, and Innova (1KD/2KD engines), often with a 77 mm height.