【OE PART NUMBER】 ---The Belt Tensioner Assembly is a direct OE replacement. Please look for the following OE number. 12554027,12580162,12609719,8126097190,8125801620,89253FN,38158,89253, 49275,SK89253. 【STABILITY AND RELIABILITY】---The drive belt tensioner is to adjust the tightness of the belt to maintain the stability and reliability of your car's transmission system more stable and reliable.drive belt tensioner can offer you a professional user experience and make your car like new. You may choose it with confidence.