Tensioner 077903133E For Audi
The DUHUI Bearing 077903133E drive belt tensioner is an OE-spec replacement component for the accessory drive belt system on select Audi models equipped with 4.2L V8 and 3.7L V8 engines. Manufactured to match original equipment specifications including 077903133E, this automatic spring-loaded tensioner maintains proper serpentine belt tension, ensuring reliable alternator, air conditioning compressor, and power steering pump operation for premium Audi sedans and wagons.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | 077903133E |
| Outside Diameter | 82.30 mm (3.240 inch) |
| Pulley Width | 27.20 mm (1.070 inch) |
| Material | Aluminum |
| Product Type | Automatic Drive 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: 077903133E, 077903133C
Reference Numbers (Interchange):
URO Parts: URO010591
AUDI: 077 903 133 E, 077-903-133-E
Vehicle Fitment
This drive belt tensioner is designed for Audi models equipped with 4.2L V8 and 3.7L V8 engines, including:
AUDI A6 (4B, C5): 4.2 V8 1998-2004
AUDI A6 QUATTRO: 4.2 V8 2000-2004
AUDI A8 (D2): 3.7 V8 2000-2003, 4.2 V8 2000-2003
AUDI S6 (C5): 4.2 V8 2002-2003
AUDI S8 (D2): 4.2 V8 2001-2003
AUDI RS6 (C5): 4.2 V8 Biturbo 2003
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Direct OE replacement for Audi applications with 077903133E / 077903133C.
- Designed for accessory drive belt (serpentine belt) tensioning, maintaining proper belt tension for alternator, A/C compressor, and power steering pump operation.
- Cross-references with URO Parts URO010591 for easy interchangeability in the aftermarket.
- Precision spring-loaded mechanism automatically adjusts belt tension as the belt stretches over time.
- OE-compatible replacement for original part numbers 077903133E and 077903133C.
Installation Notes
- This tensioner is designed for the accessory drive belt system on Audi models equipped with 4.2L and 3.7L V8 engines.
- Before removal, locate the OE belt routing diagram under the hood or make a sketch of the belt path.
- Use a long-handled wrench or serpentine belt tool to safely relieve spring tension – never cut or pry the belt off while under tension.
- When replacing the tensioner, it is recommended to inspect the serpentine belt for wear and replace it if necessary.
- Ensure the tensioner mounting surface is clean and free of debris before installing the new unit.
- Torque mounting bolts to manufacturer specifications – verify appropriate torque for your specific engine application.
- After installation, ensure the belt is properly seated in all pulley grooves and tracking correctly. Start engine briefly, shut off, and recheck belt alignment.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces drive belt tensioners and wheel bearing assemblies to OE specifications. Contact us
