06A109105D Camshaft Pulley for Volkswagen Jetta Syncro Seat lbiza

The timing rail with part number 948 105 023 02 is a critical component in the engine timing system, responsible for keeping the timing chain tightly positioned to prevent slack or disengagement from pulleys – a function vital for avoiding catastrophic engine damage like valve-piston collisions if the chain jumps timing. Specifically engineered for Volkswagen Group vehicles, it fits Porsche Cayenne 4.8L V8 models (2008-2018, including 957/958 generations), Audi S6/S8 with 4.2L V8 engines (BVJ engine code, 2006-2011), and Volkswagen Touareg 4.2L V8 (BAR engine code, 2003-2010) . As a genuine OEM part, it meets the strict manufacturing standards of VW Group suppliers, ensuring compatibility with these models' timing systems. Owners should monitor for symptoms like unusual engine noise, which may indicate rail wear requiring prompt replacement to maintain optimal timing chain tension.