Lotus Esprit, Excel SE / HC cambelt HTD. 2.2L 910 & 912 engine. Lotus Esprit & Excel HTD (round tooth) profile cam belt to suit the HC engines manufactured from 1985 - 1999. These belts also make a great reliability upgrade for the earlier cars like the S1, S2, S3 Esprit and Talbot Sunbeam Lotus, but the pulleys must be changed to match the belt profile.