There have been multiple supersessions on the one piece door seals however there is very little difference between any of them and in actual fact most of the 3rd party ones are exactly the same and will fit either the earlier Serires IIIs that have the multiple seals with the lip ground off or the later transitional Series IIIs that had the one piece seal fitted as standard.
The Relevant Part Numbers with supercessions are as follows:
Front RH Door - MTC4112 (SIII), MWC1080 (up to VIN LA935726), ALR4936 (from VIN LA935727 to VIN VA134184), CFE102720 (from VIN VA134185 to VIN WA159806) and CFE102980 (from VIN XA159807)
Front LH Door - MTC4113 (SIII), MWC1081 (up to VIN LA935726), ALR4937 (from VIN LA935727 to VIN VA134184), CFE102730 (from VIN VA134185 to VIN WA159806) and CFE102990 (from VIN XA159807)
Rear Side RH Door - MTC4114 (SIII), MWC1082 (up to VIN LA935726), ALR4938 (from VIN LA935727 to VIN WA159806) and CFE103000 (from VIN XA159807)
Rear Side LH Door - MTC4115 (SIII), MWC1083 (up to VIN LA935726), ALR4939 (from VIN LA935727 to VIN WA159806) and CFE103010 (from VIN XA159807)
Rear Door - MTC4111 (SIII and up to VIN LA935726), ALR4929 (from VIN LA935727 to VIN XA167599)
Rob.
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