Engine 55 AMG (171.473) Engine codes M 113.989 Production years 2006/06 - 2011/02 kW 294 hp 400 ccm 5439. Production years. Engine codes. SLK (R171). Engine 350 (230.467) Engine codes M 112.973 Production years 2003/03 - 2012/01 kW 180 hp 245 ccm 3724.
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