This brand new air filter housing fits XF95 truck with OEM numbers 1854404, 1637932, 1637931, 1686324 and 1854405. It serves as a key shell part for the engine intake system. It fully shields the air filter and prevents dirty particles from entering engine cylinders. Made of high-strength durable plastic, it withstands harsh weather and long-term vibration. Strictly produced by OEM standards, it is a perfect direct replacement for damaged housings.