BUICK EXHAUST EMISSION TUINE UP LABELS EMISSION YEAR MODEL AND USAGE CODE STANDARDS PART NO 1978 B 400 w A C RS Fed 10002740 1978 B 400 exc A C RR Fed 10002739 1978 H 231 2 w A T M33 M38 NK 1259990 1978 H X 231A NA Fed 1259981 1978 X 350L DZ Calif 472893 1979 A 301 w A T exc A C PC Fed 10011266 1979 A B 301Y w A C RH 10011271 1979 A 196 w A T BA Fed 1264980 1979 A B X 231 w A T BC Fed 1264990 1979 A 301Y exc A C RC 10011268 1979 A B 231 3 JO Fed 25502814 1979 A X 231 w Z94 BT 1264998 1979 A 231 BU Hi Alt 1264999 1979 A 301W exc A C RK Fed 10011273 1979 A 301W w A T exc A C RA 10011266 1979 A B 301Y PF Fed 10008838 1979 A 301W w A T A C PB Fed 1 I 008835 1979 A 301W exc A C RM Fed 10011592 1979 A 301W w A T A C R4 Fed 10013729 1979 A 231 2 exc W49 JV Calif 25505238 1979 A 305H CF Calif 14006783 1979 A 350H CH Hi Alt 14006784 1979 A 350L CK Hi Alt 14006786 1979 A 196 w M T BD Fed 22501054 1979 A X 231A w M T BG Fed 25501056 1979 A 231 BV Calif 25501636 1979 A B 231 3 JJ Hi Alt 25502784 1979 A B 301 exc A C PH Fed 10008839 1979 B C 350X J1 25502739 1979 B X 231A BF Calif 1264991 1979 B C 350R SR Calif 22500538 1979 B C 403 SU Calif 22500541 1979 B C 403 SW Hi Alt 22500542 1979 B C 403 SX Fed 22500543 1979 B C 350R ST Alt 22500540 1979 E 350R OA Fed 22500546 1979 E 350R OB Alt 22500547 1979 E 350R OC Calif 22500548 1979 E 231 3 JN Calif 25502813 1979 E 231 3 JP Fed 25502819 1979 E 231 3 JK Hi Alt 25502785 1979 H 231A w M T BE Fed 22501055 1979 H 231A w M T BH Calif 22501057 1979 H 231A w M T BW Fed 25501670 1979 H 231A w A T BX Hi Alt 25501671 1979 H 231A w A T B1 Calif 25501674 1979 X 305 exc Z94 D6 Fed 14010240 1979 X 350L D9 Hi Alt 14010244 1979 X 350L L2 Calif 14010245 1980 NOTE 1 To improve cold start problems NOTE 2 To improve durability NOTE 3 Use with Engine Family O1C2EY Instruction Cluster Warning Flag 1980 A B 301W w A T A C TC Fed 10011515 1980 A B 301W w A T exc A C TD Fed 10011516 1980 A 305H 26 Calif 14023197 1980 A 231A w A T Closed Loop NB1 GB Fed 25508363 1980 A H 231A w M T M20 KB Fed 25505712 1980 A 231A w A T MV9 exc NB1 KF Fed 25505716 1980 A B 231 3 w A T NB Fed 25505718 1980 A 231A w A T KG Fed 25505724 1980 A B 231 A w A T NB1 KK 25506299 1980 A 231 3 w A T NH Fed 25506315 1980 A B 231 3 w A T NM Calif 25506832 WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION 89 527