Model: B3C7. APPLICATION: crankshaft. TECHNICAL CONDITION TO ASSEMBLE. PRODUCTION YEAR 1999. UNIT PRICE. USED PART WITH DISASSEMBLY. PART OF DISASSEMBLY. THE ENGINE IS ALSO PRESENT IN THE MAZDA 121 I DA 1.3 ENGINE CODE B3 323 C IV BG 1.3 16V ENGINE CODE B3 16V.