Tensioner 078903133Q For Audi
The DUHUI Bearing 078903133Q drive belt tensioner is an OE-spec replacement component for the accessory drive belt system on select Audi models equipped with 2.6L and 2.8L V6 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 078903133Q, this unit delivers reliable performance for classic Audi sedan, wagon, and convertible applications.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | 078903133Q |
| Outer Diameter | 76.00 mm (2.992 inch) |
| Width | 25.00 mm (0.984 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: 078903133Q, 078903133B, 078903133AB, 078903133T
Reference Numbers (Interchange):
GATES: T38193
INA: 534011620, 531049030, F550811
DAYCO: APV2302
SKF: VKM31061
SNR: GA35708
HUTCHINSON: T0264
FEBI BILSTEIN: 21905
CONTINENTAL: V55717
RUVILLE: 55717
VAICO: V102097
MEYLE: 078903133QMY
URO Parts: 078903133Q
QUINTON HAZELL: QTA1206
BREDA LORETT: CR3261
OPTIMAL: 0N1083S
LUCAS: LA0174
Vehicle Fitment
This drive belt tensioner is designed for Audi models equipped with 2.6L and 2.8L V6 engines, including:
AUDI 100 (4A, C4): 2.6 1992-1994, 2.6 quattro 1992-1994, 2.8 E 1990-1994, 2.8 E quattro 1990-1994
AUDI 100 AVANT (4A, C4): 2.6 1992-1994, 2.6 quattro 1992-1994, 2.8 E 1991-1994, 2.8 E quattro 1991-1994
AUDI 80 (8C, B4): 2.6 1992-1995, 2.6 quattro 1992-1995
AUDI 90 (8C, B4): 2.8 1993-1995
AUDI A6 (C4): 2.6 1994-1995, 2.8 1994-1995
AUDI CABRIOLET: 2.8 1994-1995
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Direct OE replacement for Audi applications with 078903133Q / 078903133B / 078903133AB.
- 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 T38193, INA 534011620, and SKF VKM31061 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 078903133Q, 078903133B, 078903133AB, and 078903133T.
Installation Notes
- This tensioner is designed for the accessory drive belt system on Audi models equipped with 2.6L and 2.8L V6 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
