Factory Replacement Units Engine Number What's Different Engine Capacity Model 8G28 Oil feed to primairy gear, 1,375" tail 850cc 8G35 Deva conversion crank, 1,375" tail 850cc 8G45 Gold seal, 1,5" tail 850cc GSE1101E Gold seal 850cc RKM1101E Silver seal 850cc BHM1307E Gold seal 85H prefix replacement 850cc 8G18 Oil feed to primairy gear 997cc Cooper 8G36 Oil feed converted crankshaft and primairy gear 997cc Cooper 8G29 Deva bush 997cc Cooper 8G33 Fitted with 28G193 cilinder head(12G202) 998cc Cooper 8G40 28G222 cylinderhead introduced(12G295) 998cc Cooper 8G42 Closed circuit breather rocker cover side plate 998cc Cooper 8G49 Purolator oil filter pressure switch introduced 998cc Cooper GSE1103E Gold seal, was RKM 1120E silver seal 998cc Cooper RKM1150E Mini clubman silver seal unit 1100cc Clubman & Special RKM1151E Mini clubman silver seal unit 1100cc Clubman & Special BHM1042 New and Gold seal 1974 to 1980 1100cc Clubman & Special BHM1229 New and Gold seal, A+ block 1980 on 1100cc Clubman & Special 8G57 998 new from 1969 and exchange for all pre-A+ 998cc Mini pre A+ to 1981 GSE1102E Gold seal, was RKM 1119E silver seal 998cc Mini pre A+ to 1981 RKM1102E Silver seal 998cc Mini pre A+ to 1981 RKM1119E Silver seal, replaced by RKM1102E 998cc Mini pre A+ to 1981 BHM1232 LC piston,CAM6267 cam,early cylinderhead,crank 998cc Mini A+ BHM1377 HC piston,CAM4717 cam,early cylinderhead,crank 998cc Mini A+ BHM1458 LC piston,CAM6267 cam,late A+ mains cyl head 998cc Mini A+ BHM1460 HC piston,CAM4717 cam,late A+ mains cyl.head. 998cc Mini A+ LBB10089 LC lead free,CAM6267 cam,late A+ mains cyl.head 998cc Mini A+ press fit piston 8G200 New and Gold seal Mini 1275 GT 38G527 New and Gold seal, for 12H706 707 831 Mini 1275 GT RKM1130E Silver seal, was RKM1112E Mini 1275 GT RKM1152E Silver seal Mini 1275 GT RKM1112E Silver seal Mini 1275 GT BHM1220 'A' plus Mini 1275 GT 8G199E Gold seal, with duplex chain, 1300GT,Innocenti Mini, 11 stud head 38G599E Gold seal, simplex chain, 12H719 832 1300GT,Innocenti Mini, 11 stud head GSE1109E Gold seal 1300GT,Innocenti Mini, 11 stud head RKM1133E Silver seal 1300GT,Innocenti Mini, 11 stud head BHM1209E Gold seal, replaced all Innocenti`s 12H610 635 719 832 1300GT,Innocenti Mini, 11 stud head 8G38 Gold seal pre-closed circuit breathing 970cc 8G41 Closed circuit breathing sideplates introduced 970cc 8G46 Gold seal oilfilter with pressure switch 970cc 8G133 Gold seal pre-closed circuit breathing 1070cc 'S' 8G153 Closed circuit breathing sideplates introduced 1070cc 'S' 8G145 Pre-closed circuit breathing 1275cc 8G154 Closed circuit breathing, sideplates introduced 1275cc 8G155 Oil filter with pressure switch introduced 1275cc 8G174 Fitted with AEG510 cam 1275cc 38G464 Introduced in 1970 most with EN16 crank 1275cc RKM1103E Silver seal 998cc Cooper 8G156E Mini and Austin 1100(ado16) 1100cc Clubman and Special