Tensioner 045109485A For Audi

The DUHUI Bearing 045109485A timing belt tensioner is a direct OE-replacement component for the timing belt system on select Audi models equipped with the 3.0L V6 engine. This tensioner ensures precise belt tension during operation, maintaining correct valve and piston synchronization for reliable engine performance. Manufactured to match original equipment specifications including 045109485A and 06C109485A, this unit is a critical component for timing belt service.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | 045109485A |
| Outer Diameter | 65.00 mm (2.559 inch) |
| Inner Diameter | 49.00 mm (1.929 inch) |
| Width | 33.00 mm (1.299 inch) |
| Product Type | Timing Belt Tensioner |
Important: All information on this page is for reference only. Please verify OE numbers, dimensions, and vehicle fitment against your original part before ordering. Contact us for fitment confirmation.
DH Code & OE Numbers & Reference Numbers
DH Code:
OE Numbers: 045109485A, 06C109485A
Reference Numbers (Interchange):
INA: 531 0566 10
GATES: T42050
Vehicle Fitment
AUDI A4 (B6, 8E2): 3.0 quattro 2000-2005
AUDI A4 (B7, 8EC): 3.0 quattro 2004-2008
AUDI A6 (C5, 4B): 3.0 V6 2000-2004
AUDI A8 (D2, 4D): 3.0 V6 2000-2002
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Direct OE replacement for Audi 3.0L V6 applications with 045109485A / 06C109485A.
- Precision-engineered tensioner for 3.0L V6 timing belt systems, maintaining proper belt tension.
- Cross-references with INA 531056610 and GATES T42050 for easy interchangeability in the aftermarket.
- Premium metal construction with high-quality bearing for long service life.
- OE-compatible replacement for original part numbers 045109485A and 06C109485A.
Installation Notes
- This tensioner is designed for the timing belt system on Audi models equipped with the 3.0L V6 engine.
- When replacing the tensioner, it is highly recommended to replace the timing belt, idler pulleys, and water pump as well – these are interference engines and timing belt failure can cause serious damage to valves and pistons.
- Before removal, locate the OE belt routing diagram or make a sketch of the belt path.
- Use appropriate tools to safely relieve tension – never cut or pry the belt off while under tension.
- Ensure the tensioner mounting surface is clean and free of debris before installing the new unit.
- After installation, rotate the engine by hand to verify proper belt tension and alignment, then start the engine briefly and recheck.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces timing belt tensioners, idler pulleys, and wheel bearing assemblies to OE specifications. Contact us

