The Engine Timing Chain Tensioner by Beck/Arnley (024-1350) is a guide rail specifically designed to fit the 08-15 Scion xB with a 2.4L-L4 engine. This part is essential for maintaining proper timing chain tension and ensuring optimal engine performance. With interchange part number 71006, this high-quality guide rail from Beck/Arnley is a reliable choice for auto enthusiasts looking to keep their vehicles running smoothly.