Manufactured from T6061 billet aluminium, our thermostat dress up kit for the BMW N55/N54 and S55 engines offers a high-quality aesthetic update to the OE thermostat cover. Installation is extremely easy and the end result speaks for itself, a must-have for those that like their engine bay looking at its best. Please Note: If you are fitting an oil pressure sensor or oil temperature gauge please select the optional extra piece with a 1/8NPT thread from the drop down menu. If these parts are exposed to excessive heat for prolonged periods of time, it can affect the overall finish which is unavoidable with anodised aluminium products.