It's not listed on RealOEM (which is odd) but looks like 33536785088 on US sites, presumably the same spec?
https://www.genuinenewparts.com/oem-parts/bmw-coil-spring-33536785088?origin=pla&gclid=CjwKEAjwu4_JBRDpgs2RwsCbt1MSJABOY8an4Y3EDDSBSCXzXRzNxEmZFzSEFBHRyU6WkGyc7a1utRoC1sXw_wcB