RIDEWELL, RD202S Truck / Trailer Components - Suspension, Used Meritor / Rockwell RT 40/145P Tandem Rear Axle, 5.86 Ratio, 40,000 lbs Rating, Ridewell RD-202S Dynalastic Suspension, Rockwell RPL-20-145 Differential (Cast Number #3200-N-1886)***removed from municipal California trucks with ~80K-130K miles**photos of sister unit, Attachment, Serial Number: