Supply auto alternator bearing B17-99D and have the OEM experiences for several years.(Non-standard bearing for 6304) We can producu high precision alternator bearings.Features:1) YJ no.: B17-99D 2) Dimensions: 17 x 52 x 17mm3) For: BOSCH, MERCEDES 4) Replaces: B17-99D, 17BC05S3NSE2, 1-120-905-0945) Lester #: 13243, 13260, 13269, 13270, 13356, 13358, 13359, 13366, 13367, 13469, 13471, 13526, ...