The Jeep Cherokee XJ 87-94 Brake Booster Master Cylinder Assembly OEM #3539 is a high-quality power steering pump assembly designed specifically for Jeep vehicles. Made in the United States, this mechanical drive type pump comes with bolts and a reservoir included for easy installation. With a universal fitment design, this part is suitable for both the left and front placements on the vehicle. This OEM assembly is a reliable and durable component for steering control in Jeep Cherokee XJ models from 1987 to 1994.