Volvo part numbers: 31304162, 31304161. 1 x Rear coil spring from a 2014 Volvo XC70 2.4 D5 WITH Four-C (4C) Active Suspension. SACHS 994 824. Genuine Volvo part. £172 each, new from Volvo. NOTE: Ends of spring end on opposite sides (180 degrees from each other).
eBay