B125 BUICK MODEL REFERENCE 1978 ROCHESTER 4BC Follow procedure outlined below to determine carburetor and or part number 1 Determine vehicle model check VIN DIVISION CODE 2 Determine engine and carburetor type 3 Part number can be determined by cross referencing corresponding column number with same column number on chart VIN PRODUCTION DIV CODE USAGE COL NO l 17058202 4 A 305H w A T exc A C 6 17058204 4 A 305H w A T A C 7 17058582 4 A B 350L exc A C 8 17058584 4 A B 350L w A C 9 17058582 4 X 350L w Alt exc A C 8 17058584 4 B 350L w A C Alt 9 17058240 4 All 231 3 w Fed 13 17058241 4 All 350X 1st Design 1 17058246 4 All 231 3 w Alt 12 17058250 4 All 403 exc E w Fed exc A C 16 17058253 4 All 403 exc E w A C Fed 2 17058258 4 All 350R 403 exc E w Alt 3 17058272 4 g All 301W 4 17058540 4 All 231 3 w Calif 14 17058553 4 All 350R 403 exc E w Calif 5 17058274 4 B C 400 1st Design 15 17058264 4 B C 400 2nd Design 17 17058502 4 Z 350L w Calif exc A C 11 17058504 4 X 350L w A C Calif 10 WAREHOUSING AND olstmautlow Division OF GENERAL Motons CORPOFlATION BU CK 41 REV 5 81 3 63 c 3 000 GROUP