Standard bearing STA 4391 UR2 / 4387 KOYO is used in many C635 automotive transmissions. The bearing presented in our offer is a single model, which was manufactured by the brand KOYO, which is famous for the production of high-quality automotive accessories. Purchasing this bearing guarantees trouble-free use for a long time. STA 4391 UR2 / 4387 KOYO bearing has an inner diameter of 43.18, an outer diameter of 86.5 and a width of 19 mm. Thanks to the highest quality steel, it guarantees the safety of car users. In addition, this bearing has high resistance to high temperatures, loads, pollution, dust and excessive moisture. This is an excellent product, so we warmly encourage you to choose our offer. We have attractive prices and guarantee fast shipping.