1990 ROCHESTER 41 BC FOLLOW PROCEDURE OUTLINED BELOW TO DETERMINE CARBURETOR AND OR PART NUMBER 1 DETERMINE VEHICLE MODEL CHECK VIN DIVISIONAL CODE 2 DETERMINE ENGINE AND CARBURETOR TYPE 3 PART NUMBER CAN BE DETERMINED BY CROSS REFERENCING CORRESPONDING COLUMN NUMBER WITH SAME COLUMN NUMBER ON CHARTS VIN PRODUCTION DIV CODE USAGE COL NO 17088115 1 34 B 307Y 1 GROUP DESCRIPTION OTY 1 2 3 4 5 3 725 CARBURETOR PRODUCTION 1 17088115 3 725 CARBURETOR SERVICE 1 17111994 3 725 POWER CARB KIT 1 17076141 3 730 AIR HORN KIT 1 17112016 3 820 COMPENSATOR KIT IDLE LOAD 1 17111104 3 750 COVER COIL KIT HOT AIR CHOKE 1 17110646 3 740 FILTER FUEL INLET 1 5651803 3 745 FLOAT INSERT KIT 1 17111103 3 734 FLOAT BOWL KIT 1 17112012 3 738 GASKET KIT AIR HORN 1 17111093 3 740 GASKET FILTER NUT 1 7024281 3 750 HOUSING KIT CHOKE 1 17111100 3 814 NEEDLE SEAT 1 7035134 3 820 0 RING KIT IDLE AIR BLEED VALVE 1 17079838 3 838 PUMP ASM 1 17051117 3 750 RETAINER KIT CHOKE COVER 1 17067078 3 806 ROD JET KIT METERING 1 17112014 3 724 SCREW ASSORT KIT MAJOR ASM ATTACH 1 17078935 3 764 SENSOR KIT THROTTLE POSITION 1 17078448 3 440 SOLENOID KIT MIXTURE CONTROL 1 17111102 3 757 SPRING CAM ASM AIR VALVE 1 7035344 3 729 THROTTLE BODY KIT 1 17111995 3 755 VACUUM BREAK KIT PRIM 1 17067211 3 755 VACUUM BREAK KIT SEC 1 17111101 3 820 VALVE IDLE AIR BLEED 1 17112015 ADDITIONAL ATTACHINIG PARTS DIV GROUP MODEL USAGE NOUN NAME DESCRIPTION OTY PART 1 34 3 726 B 307Y GASKET CARB 01 22508038 1 3 726 B 4 3Z 5 0E GASKET T B I 01 10129563 1 34 3 750 B 307Y PIPE CHOKE CLEAN AIR O1 419302 1991 GENERAL MOTORS SERVICE PARTS PERATIONS CHEVROLET 17W 6 91 3 199 3 725