This spring brake control valve fits Mack air brake systems and manages air pressure to the spring brake chambers, governing how the parking and emergency brakes apply and release. It is a replacement sold as a single unit for shops servicing that valve position. No cross-reference numbers are needed since the OEM fitment is already established for Mack applications.FeaturesSpring brake control valve for air brake systemsOEM number 110171Cross-references to Mack part number 7546-110171Sold as a single unitTech SpecsPart Type: Spring Brake Control ValveOEM Number: 110171Mack Cross-Reference: 7546-110171Sell Pack: 1 Each