BMW (99-11) Temperature Switch in Radiator Hose OEM Temperature Switch Located in the Radiator Hose NOTE: fits from 09/1998 Production Date Onward. BMW part# 13 62 1 433 077, check fit below. Recently made OEM part, not been lying around. PLEASE NOTE the MID-Year splits on PRODUCTION DATE. See Fitment Chart BELOW, under 'Product Description'. Email us your VIN.