2006 Lotus Exige Engine: 1.8L L4; Molded Rubber; O-Ring Type;. 2007 Lotus Exige Engine: 1.8L L4; Molded Rubber; O-Ring Type;. 2008 Lotus Exige Engine: 1.8L L4; Molded Rubber; O-Ring Type;. 2009 Lotus Exige Engine: 1.8L L4; Molded Rubber; O-Ring Type;.