Original quality chain tensioner 03H 109 507 for Q7/3.6/

This original quality timing chain tensioner with OE part number 03H 109 507 is engineered as a direct replacement for Audi Q7 3.6L models. Manufactured strictly in accordance with OEM specifications, it requires no cutting, drilling or modification during engine maintenance and enables seamless plug-and-play installation.

The tensioner adopts heavy-duty alloy hydraulic components and a precision automatic tension control structure. Under continuous high-temperature and high-load operating conditions inside the engine, it maintains consistent proper tension for the timing chain. It effectively resolves typical problems caused by ageing and failed original tensioners, including rattling noise from loose timing chains, unstable idling, abnormal vibration during acceleration and potential risk of timing jump teeth. Built-in high-temperature resistant sealing elements resist corrosion by hot engine oil to prevent oil seepage and pressure loss, offering reliable protection for the entire timing assembly.

Precision machining ensures all mounting dimensions, thread positions and locating points are fully consistent with OEM parts for tight fit without assembly gaps. Every finished unit undergoes rigorous hydraulic ageing, high-temperature cycle and wear resistance tests before delivery, delivering performance matching genuine factory standards.

Widely stocked by auto repair workshops, this cost-effective maintenance spare part fits Audi Q7 3.6L vehicles compatible with part reference 03H 109 507, helping avoid severe engine damage and costly overhauls resulting from timing system malfunctions.