The Bendix R-12DC Relay Valve, part number K080573, is an air brake relay valve designed for heavy-duty truck braking systems. This valve measures 6 inches in length, 4.5 inches in width, and 3.5 inches in height, making it a compact, direct-fit unit for air brake circuits. Sold individually as a single unit by Pro Gear and Transmission. Call us to confirm proper fit for your application before ordering.Interchanges:BWK080573A factory handling fee of $20.00 per unit is added at checkout.FeaturesBendix R-12DC air brake relay valvePart number K080573Dimensions: 6″ length x 4.5″ width x 3.5″ heightSold as a single unit (each)A genuine Bendix part from Pro Gear and TransmissionTech SpecsPart Number: K080573Dimensions: 6″ L x 4.5″ W x 3.5″ HUnit of Measure: Each