Catalog Section # Part name Qty Prod Prod date FINIS Part No. Ford Sierra MkI (1982-1986) F4.11 - Exhaust System With Catalyst (TL20EFI, CAT) 2 Catalyst assyMOTORCRAFTUSE WITH RETROFIT PACK ONLY 1 D 8/82 - 12/86 1230733 2U2J5E212CA1A Ford Sierra MkI (1982-1986) F4.11 - Exhaust System With Catalyst (TL20EFI, CAT) MOTORCRAFT 1 D 8/82 - 12/86 1230733 2U2J5E212CA1A Ford Sierra MkI (1982-1986) F5.10 - Catalyst Installation Kits (TL20EFI CAT, TL16E, TL18) 3 MOTORCRAFTEngine: TL18, TL16E, TL20 1 D 8/85 - 1/87 1230733 2U2J5E212CA1A