URO 078109479E Engine Timing Belt Tensioner

Engine Timing Belt Tensioner for Audi and VW

URO 078109479E is an engine timing belt tensioner built for OE-style fitment and timing belt alignment. It is engineered for select Audi and Volkswagen applications, including Audi A4, A6, S4, Allroad Quattro, and Volkswagen Passat models.

• OE-dimensioned aluminum construction for proper clearances and belt tracking
• Guaranteed fitment for listed applications
• Sealed bearing design helps resist lubricant contamination and supports smooth operation
• Spring rate matches OE specifications where applicable for consistent belt tension
• Mounting bracket included; 3 mounting holes
• Part number 078109479E for direct reference and ordering

Application and Fitment

Compatible with 1998-2001 Audi A4, 1998-2001 Audi A4 Quattro, 1998-2004 Audi A6, 1998-2005 Volkswagen Passat, 2000-2002 Audi S4, and 2001-2005 Audi Allroad Quattro. This timing belt tensioner is a direct-fit service part for engines that require stable belt tension and accurate timing alignment. Cross-reference part numbers include Gates T43026 and VAICO V10-0566.

What This Part Helps Address

• Timing belt slack or inconsistent belt tension
• Belt misalignment caused by worn tensioner components
• Noisy or rough tensioner bearing operation
• Heat- and vibration-related wear in the timing drive system
• Service replacement for worn OE-style tensioner assemblies

Installation Notes and Tips

Inspect the timing belt, idlers, and related seals during service, since tensioner replacement is commonly performed as part of a full timing belt job. Verify engine code and vehicle application before installation on Audi A4, A6, S4, Allroad Quattro, and Volkswagen Passat models. Follow factory timing procedures and torque specifications to maintain correct belt alignment.

Quality Assurance

URO manufactures this tensioner to OE dimensions and backs it with a 24-month unlimited mileage warranty. The aluminum housing and sealed bearing construction are selected to handle engine heat and vibration in demanding timing belt service.