View 3 Photos View 0 Videos 2007 Axle Alliance RS21.0-4 Rear Axle Housing for a Sterling Acterra $968 USD (USED) Alliance Axle RS21.0-4 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: SPRING Track Width : 71 ConditionUsedFits To Make(s)SterlingFits To Model(s)ACTERRAStock Number25748170 MLS Number13385119CategoryAxle Housings, Rear Last Updated8/29/2025 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info