Dayco 84125 Engine Timing Belt Component Kit

Dayco Timing Component Kit 84125

Dayco 84125 is an engine timing belt component kit for select Audi and Volkswagen applications. It is built for vehicles that require replacement of the camshaft belt tensioner and camshaft belt idlers during timing service, including fitments where the hydraulic actuator is not included.

This timing component kit fits 2000-2004 Audi A6 Quattro, 2000-2001 Audi A8 Quattro, 2001 Audi S8, 2002-2004 Audi A8 Quattro, 2002-2003 Audi S6, 2002-2003 Audi S8, 2003-2004 Audi RS6, 2004-2006 Volkswagen Phaeton, 2004-2006 Volkswagen Touareg, and 2007 Volkswagen Touareg. It also fits 2000 Audi A6 Quattro and 2001-2004 Audi A6 Quattro applications noted in the fitment data.

Key Features

• Engine timing belt component kit for valve train service
• Includes camshaft belt tensioner and camshaft belt idlers
• Hydraulic actuator not included, as listed in the fitment notes
• Application-specific coverage for Audi A6 Quattro, A8 Quattro, S6, S8, RS6, and Volkswagen Touareg and Phaeton
• Dayco Timing Component Kit line for timing system replacement work
• Part number 84125 for ordering and catalog lookup

Detailed Description

Dayco 84125 is a timing component kit for engine timing service on select Audi and Volkswagen models. The kit is specified for vehicles that use a camshaft belt tensioner and camshaft belt idlers, with notes indicating the hydraulic actuator is not included. For timing belt maintenance on a Volkswagen Touareg or Audi A6 Quattro, matching the exact chassis and VIN notes is important because the listed applications include build-date and chassis breakpoints.

This part cross-references CARQUEST 84125 and Duralast 84125 for the same application.

What It Helps Address

• Worn or noisy camshaft belt tensioner components
• Timing belt service on Audi A6 Quattro and A8 Quattro engines
• Replacement of aging belt idlers during scheduled timing work
• Fitment-specific timing service on Volkswagen Touareg and Phaeton models
• Restoring proper timing system component alignment after wear

Installation Notes

Verify engine code, chassis breakpoints, and VIN notes before ordering. This kit is listed without the belt in some applications, and the hydraulic actuator is not included. Use the vehicle-specific fitment notes for 2000-2007 Audi and Volkswagen applications to confirm the correct timing service parts before installation.

Quality Assurance

Dayco Timing Component Kit parts are cataloged for exact application matching across the listed Audi and Volkswagen vehicles. Part number 84125 is intended for timing service where the specified tensioner and idler components are required.