View 2 Photos View 0 Videos Axle Alliance RT40-4N Cutoff for a 2015 Western Star 4900 FA Contact for price GOOD USED AIRLINER SUSPENSION FROM UNDER WESTERN STAR WITH 109K MILES. ALLIANCE RT40-4N GEARS WITH 3.58 RATIO. LOCKERS ON FRONT AND REAR., Serial#: ., Hub Bolts: PILOT, Ratio: 3.58,... ConditionUsedRear End3.58 ratioFits To Make(s)Western StarFits To Model(s)4900 FAWill Fit Year(s)2015Stock NumberSV-150-1 MLS Number9682353CategoryFront & Rear Cutoffs (Clip Cuts) Last Updated5/14/2026 LocationAlma, AR, US Sold ByArkansas Truck Center (833) 371-___ SHOWNUMBERCall Seller Email Seller Save More Info