Oil Cooler 1.Part number: 4W7190 4W7188 2.Company no.: LB-H2003 4W7188 Oil Cooler fits D6C, D6D, D7F, D25C, D25D, D30C, D30D, D35C, 528, 571F, 572F, 621, 621B, 621E, 621R, 621S, 623, 627E, 639D, 814, 815, 816, 920, 936, 936E, 950B, 950E, 966C, 966D, 966E, 977, 977K, 977L, D250B, D300B Oil Cooler Assy 4W7190 /4W7188 for excavator , excavator oil cooler