Brand-new Fuel Filter Water Separator for PACCAR MX13 engines, designed to effectively separate water from fuel, ensuring clean fuel delivery and optimal engine performance. This high-quality replacement part meets OEM standards for durability and reliability. Part Number: K37-1022. Ideal for maintaining engine efficiency and preventing fuel contamination. Stock #P-6934 – New and ready for immediate installation. Sold as-is, no warranty or guarantee.