Tensioner 077903133G For Audi
The DUHUI Bearing 077903133G drive belt tensioner is an OE-spec replacement component for the accessory drive belt system on a wide range of Audi, Volkswagen, and Bentley models equipped with large-displacement engines. This automatic spring-loaded tensioner maintains proper serpentine belt tension, ensuring reliable alternator, air conditioning compressor, and power steering pump operation. Manufactured to match original equipment specifications including 077903133G and 077903133F, this unit delivers reliable performance for premium full-size sedan applications.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | 077903133G |
| Outer Diameter | 70.00 mm (2.756 inch) |
| Height | 31.00 mm (1.220 inch) |
| Product Type | Belt Tensioner / 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: 077903133G, 077903133F
Reference Numbers (Interchange):
AUTEX: 702042
BREDA LORETT: CR 4575
CONTINENTAL: V-3537
GATES: 38199, 36016, 2301-23673
INA: 531 0571 10
METELLI: 20-0109
OPTIBELT: 119 SR
RUVILLE: 55108
TRQ: BPA04108
Vehicle Fitment
This drive belt tensioner is designed for Audi, Volkswagen, and Bentley models equipped with 3.0 TDI, 3.7, 4.2, 6.0 W12, and 3.2 FSI engines, including:
AUDI A8 (4E): 3.0 TDI 2003-2010, 3.7 2002-2010, 4.2 2002-2010, 6.0 W12 2003-2010
AUDI A8 (D3, 4E): 3.2 FSI 2005-2010
AUDI Q7 (4L): 3.0 TDI 2005-2015, 3.6 FSI 2006-2009, 4.2 2006-2011
VOLKSWAGEN PHAETON (3D): 3.2 2002-2006, 3.0 TDI 2005-2009, 4.2 2002-2006, 6.0 W12 2002-2006
VOLKSWAGEN TOUAREG (7L): 3.2 2002-2006, 3.0 TDI 2004-2010, 4.2 2002-2006
BENTLEY CONTINENTAL: 6.0 W12 2003-2011
BENTLEY FLYING SPUR: 6.0 W12 2005-2011
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Direct OE replacement for Audi, VW, and Bentley applications with 077903133G / 077903133F.
- 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 multiple leading brands including GATES 38199 and INA 531 0571 10 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 077903133G and 077903133F.
Installation Notes
- This tensioner is designed for the accessory drive belt system on Audi, VW, and Bentley models equipped with large-displacement 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
