This belt tensioner is a perfect fit for Subaru Impreza, Forester, Legacy, Outback, and WRX vehicles. It is made of high-quality metal material and has interchange part numbers including APV3181, 39359, and 11287594969. The OE/OEM part numbers are 23769AA040 and 23769AA05A. This tensioner is manufactured in China and is not a vintage or performance part. Please note that it is important to review California Prop 65 Warning for cancer and reproductive harm at www.P65Warnings.ca.gov. This tensioner is compatible with Tensioners & Pulleys, Timing Components & Kits, Engines & Engine Parts, Car & Truck Parts & Accessories, and other related categories.