This thermostat housing replacement is designed for direct fitment in specified vehicle models.It replaces OEM part numbers 11 53 7 534 521 and 11537534521 with identical form and function.Compatible with select , Cooper S, One, Works, Clubman, and Countryman models (R56, R57, R55, R61) from 2006–2016, as well as various Citroën and vehicles including Berlingo, C3, C4, C5, DS3, DS4, DS5, 207, 208, 308, 508, 2008, 3008, 5008, and RCZ equipped with 1.4L or 1.6L VTi/THP engines between 2007 and 2020.Please verify compatibility with your specific vehicle year, make, model, and engine before purchase.