Tensioner 078109479E For Audi
The DUHUI Bearing 078109479E timing belt tensioner is a direct OE-replacement hydraulic tensioner for the timing belt system on a wide range of Audi and Volkswagen models equipped with 2.4L and 2.8L V6 engines. This hydraulic tensioner uses engine oil pressure to automatically adjust and maintain optimal belt tension throughout the timing belt’s service life, ensuring accurate valve and piston synchronization. Manufactured to match original equipment specifications including 078109479E, this unit is a critical component for preventing catastrophic engine damage on interference engines.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | 078109479E |
| Tensioner Type | Hydraulic Cylinder |
| Material | Metal |
| Grade Type | OE Performance |
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: 078109479E, 078-109-479-E
Reference Numbers (Interchange):
AISIN: BTVG-503
SKP: SKATB2197
GOODYEAR: 21004
DAYCO: 85018
GATES: T43026
URO Parts: 078109479E
Vehicle Fitment
AUDI: A4 (B5, 8D2) 2.4 1997-2000, A4 2.8 1997-2001, A6 (C5, 4B) 2.4 1998-2005, A6 2.8 1998-2005, S4 (B5) 2.7T 2000-2002
VOLKSWAGEN: Passat (B5) 2.4/2.8 1996-2005
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Direct OE replacement for Audi and VW applications with 078109479E.
- Hydraulic tensioner design uses engine oil pressure to deliver precise, automatic tension control as the timing belt stretches over time.
- Cross-references with multiple leading brands including AISIN BTVG-503, SKP SKATB2197, and Goodyear 21004 for easy interchangeability in the aftermarket.
- Premium sealed bearing and metal construction withstand rigorous engine conditions.
- OE-compatible replacement for original part numbers 078109479E and 078109479ER.
Installation Notes
- This tensioner is designed for the timing belt system on Audi and VW models equipped with 2.4L and 2.8L V6 engines.
- 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
