Manufacturer Part Number: 4991280. 4B3.9, 6B5.9, B GAS INTERNATIONAL CM556, B4.5, B4.5 RGT, B4.5S, B5.9 G, B5.9 GAS. PLUS CM556, B5.9 LPG, B5.9 LPG. For engine. ISF2.8 CM2220, ISF2.8 CM2220 AN, ISF2.8 CM2220 EC, ISF2.8 CM2220 ECF2.
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