INA ZP01631 Engine Timing Belt Idler

Engine Timing Belt Idler for Audi Applications

INA ZP01631 is an engine timing belt idler built for timing drive service on select Audi models. It supports accurate belt routing and stable power transmission in the valve train, helping maintain correct gear ratios in the timing system.

Fits 1994-1995 Audi 90, N/A; Fits 1994-1995 Audi 90 Quattro, N/A; Fits 1994-1998 Audi Cabriolet, N/A; Fits 1995-1997 Audi A6, N/A; Fits 1995-1998 Audi A6 Quattro, N/A; Fits 1996-1997 Audi A4, N/A; Fits 1996-1997 Audi A4 Quattro, N/A.

• INA engine timing belt idler for timing drive service
• Supports proper belt tracking and gear ratio control
• Built for reliable operation with low maintenance demands
• Direct fitment for select Audi A4, Audi A6, and Audi Cabriolet applications
• Part number ZP01631 for ordering and catalog lookup

Detailed Product Overview

This timing belt idler is part of INA’s repair solution lineup for chain and belt drive components. It is used in the engine timing system to help maintain consistent belt movement and dependable power transfer, which is important for valve train synchronization. This part cross-references Gates T42180 for the same application.

Common Timing Drive Issues

• Noise from a worn or rough timing belt idler
• Uneven belt tracking in the timing drive
• Timing system service on high-mileage Audi A4 or Audi A6 engines
• Replacement of a damaged or worn idler during belt service

Installation Notes and Tips

Verify engine code and vehicle fitment before installation. Inspect the timing belt, tensioner, and related drive components during service, and follow the manufacturer’s timing procedure for the specific Audi application. Confirm the correct position and routing before returning the engine to operation.

Quality Assurance

INA supplies timing drive components engineered for reliable gear ratio control and low-maintenance service in engine applications. Part number ZP01631 is cataloged for select Audi fitments and should be matched to the vehicle’s timing system requirements before installation.