Related Audi A4 Timing Belt Replacement for 1.8T 20 Valve Engine

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What to replace while changing the Audi A4 timing belt on the 1.8T engine.

1.8T Audi Timing Belt Parts

B5 Platform

1997-2000 AEB and ATW Engine Codes
The timing belt system on the AEB, ATW, and ATB Audi A4 1.8T 20 valve engine's is comprised of the timing belt and three other serviceable timing belt components. One is the main timing belt tensioner. Second is the timing belt hydraulic tensioner damper which provides variable hydraulic loaded tension to the main tensioner for timing belt tension. Third is a small idler bearing which is mounted to the hydraulic tensioner damper. These components work in sync with each other to guide and tension the timing belt.

2000-2001 AWM Engine Code - Early VIN
The timing belt system on the AWM Audi A4 1.8T 20 valve engine is comprised of the timing belt and four other serviceable timing belt components. One is the main timing belt tensioner. Second is the timing belt hydraulic tensioner damper which provides variable hydraulic loaded tension to the main tensioner for timing belt tension. Third is a small idler bearing which is mounted to the hydraulic tensioner damper. Fourth is the water pump, which is driven by the timing belt.

2001-2001 AWM Engine Code - Late VIN
The original timing belt system on the AWM Audi A4 1.8T 20 valve engine is comprised of the timing belt and four other serviceable timing belt components. One is the main timing belt tensioner. Second is the timing belt hydraulic tensioner damper which provides variable hydraulic loaded tension to the main tensioner for timing belt tension. Third is a small idler bearing which is mounted to the hydraulic tensioner damper. Fourth is the water pump, which is driven by the timing belt.

B6 Platform

2002-2005 The original timing belt system on the B6 Audi A4 1.8T 20 valve engine is comprised of the timing belt and four other serviceable timing belt components. One is the main timing belt tensioner. Second is the timing belt hydraulic tensioner damper which provides variable hydraulic loaded tension to the main tensioner for timing belt tension. Third is a small idler bearing which is mounted to the hydraulic tensioner damper. Fourth is the water pump, which is driven by the timing belt.

Before going through the significant work of taking your car apart for timing belt replacement, please consider the following:

Looking To Save Money... "Can I Just Replace the Timing Belt?" Simply changing the Audi A4 timing belt isn't enough. Why? Around the timing belt service interval (75,000 miles), due to age the integrity of the tensioner, idlers, water pump, and other seals and o-rings are at the end or very near the end of their service life. Some individuals make the mistake of only replacing the timing belt. Then, 10,000-20,000 miles later, their new timing belt fails due to tensioner, idler bearing, or water pump failure.

Tensioner

Why replace your Audi A4 timing belt tensioner during timing belt service? Just as the timing belt has a designated service life and subsequent change interval, so do the tensioner and idler bearings. It's true that timing belts can get old, begin to crack, and eventually fail. However, it is just as common for the timing belt tensioner and/or idler bearings to fail, thus causing timing belt failure.

How can the tensioner cause a timing belt to fail? Most tensioner bearings contain a set amount of grease behind the seal. This grease provides ample lubrication and ensures tensioner reliability for the designated life span (75,000 miles). During engine operation, constant thermal temperature fluctuations eventually cause the bearing's grease to breakdown and loose it's lubricating properties. Over time, this results in unwanted bearing play and eventual seizure. If a timing belt tensioner has too much play or seizes, the timing belt can become misaligned, or begin to 'burn up' and shred, causing engine failure. Thermal temperatures also affect the timing belt causing the material composition of the belt to change and accelerates it's life span, often resulting in premature failure.

Water Pump

Why replace your Audi A4 water pump during timing belt service?

AEB and ATW Engine Codes These engines feature an external water pump that is driven by a small v belt driven off of the crank pulley. It is located just to the driver side of the timing belt area. With the vehicle in the timing belt service position many of the beginning timing belt service steps are required for water pump replacement such as removing the accessory belts and timing belt cover removal. The water pump contains an internal sealed bearing that has a life span similar to the timing belt, tensioner, and idler bearings. The internal bearing and seals of an Audi water pump can weaken and is the primary reason why a water pump eventually fails.

AWM Engine Codes It makes sense from a labor standpoint since timing belt dis-assembly is required for water pump replacement. The water pump is driven by the timing belt and contains an internal sealed bearing that has a life span similar to the timing belt, tensioner, and idler bearings. The internal bearing and seals of an Audi water pump can weaken and is the primary reason why a water pump eventually fails.

Thermostat

Why replace your Audi A4 thermostat during timing belt service? The engine temperature is controlled by the thermostat. Near the end of it's designated service life the thermostat spring temper changes. This causes the thermostat to open too much allowing the engine to run cooler, resulting in poor fuel optimization, decreased fuel economy, and less horsepower.

Valve Cover Gaskets & Cam Chain Tensioner Gaskets

Why replace your Audi A4 valve cover gaskets and cam chain tensioner gaskets during timing belt service?Audi S4 Valve Cover Gasket Replacement Kit

Oil leaks are very common on Audi A4 1.8T 20 valve models and are often noticed around 75,000-90,000 miles. Leaking valve cover or cam chain tensioner gasket are the most common, producing a foul burning oil smell in your interior. It makes sense from a labor standpoint to replace them during timing belt service and will save you precious time and hundreds of $$$ of costly labor charges.

For more detailed information regarding Audi A4 Valve Cover Gasket and Cam Chain Tensioner Gaskets, click here.

 

1.8T Audi A4 Timing Belt Replacement Kits

1997 - 2000 Models with AEB, ATW Engine Code

Please Note:1997-1999 model years had only one timing belt system option. Owners will NOT need to confirm their engine code or VIN #.

2000 model year has 3 different timing belt system possibilities. Owners will need to confirm their engine code. This kit is for owners with the AEB or ATW engine codes. [System Details]

Gen II BLAU® Audi A4 Timing Belt Replacement Kits for the 1.8T engine contain a preassembled INA timing belt BASE kit. The timing belt, timing belt tensioner, damper, and hardware contained in this BASE kit are the same as those directly supplied to VAG.

  • Base INA Audi A4 Timing Belt Kit 1.8T

    INA Base Audi Timing Belt KitBASE

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • NTN Audi A4 Timing Belt
      Tensioner w/ Hardware
    • NTN Audi A4 Timing Belt
      Hydraulic Tensioning Damper
    • INA Audi A4 Timing Belt
      Tensioner Idler w/ Hardware
    • Timing Belt Service Interval
      Sticker

    Buy Audi A4 Timing Belt Kit Base

    Preassembled BASE kit comes directly from our partner Schaeffler who has been manufacturing timing belt components under the OFFICIAL O.E. INA brand for decades. The timing belt, timing belt tensioner, damper, and hardware contained in this BASE kit are the same as those directly supplied to VAG.
  • Enhanced INA Audi A4 Timing Belt Kit 1.8T

    INA Enhanced Audi Timing Belt KitENHANCED

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • NTN Audi A4 Timing Belt
      Tensioner w/ Hardware
    • NTN Audi A4 Timing Belt
      Hydraulic Tensioning Damper
    • INA Audi A4 Timing Belt
      Tensioner Idler w/ Hardware
    • Timing Belt Service Interval
      Sticker

    Other Components:
    • Saleri Water Pump w/ O-Ring
      Gasket and Water Pump Bolts
    • Thermostat w/ O-Ring
    • Thermostat Housing w/ Hardware
    • Flennor Gates Water Pump
      V-Belt
    • Flennor Gates Power Steering
      Alternator Serpentine Belt
    • Flennor Gates AC Compressor
      Serpentine Belt
    • Front Crank Seal
    • Camshaft Seal
    • Intermediate Shaft Seal

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      Audi A4 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy Audi A4 Timing Belt Kit Enhanced
  • Enhanced Plus INA Audi A4 Timing Belt Kit 1.8T

    INA Enhanced + Audi Timing Belt KitENHANCED +

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • NTN Audi A4 Timing Belt
      Tensioner w/ Hardware
    • NTN Audi A4 Timing Belt
      Hydraulic Tensioning Damper
    • INA Audi A4 Timing Belt
      Tensioner Idler w/ Hardware
    • Timing Belt Service Interval
      Sticker

    Other Components:
    • Saleri Water Pump w/ O-Ring
      Gasket and Water Pump Bolts
    • Thermostat w/ O-Ring
    • Thermostat Housing w/ Hardware
    • Flennor Gates Water Pump
      V-Belt
    • Flennor Gates Power Steering
      Alternator Serpentine Belt
    • Flennor Gates AC Compressor
      Serpentine Belt
    • Front Crank Seal
    • Camshaft Seal
    • Intermediate Shaft Seal
    3 Liters German Ravenol G12   Plus Antifreeze (2 - 1.5L Bottles)

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      Audi A4 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy Audi A4 Timing Belt Kit Enhanced +

2000 - 2001 Early VIN and AWM Engine Code

Please Note: 2000 model years have 3 different timing belt system possibilities. Owners will need to confirm their engine code. This kit is for 2000 owners with the AWM engine code. How To Determine Your Audi Engine Code.

All 2001 models have the AWM engine code. However, 2001 AWM engines had a VIN split with two different timing belt system possibilities. 2001 owners will also need to confirm their VIN #. This kit is for the early VIN system, up to VIN 042384. How To Decipher Your Audi VIN Number.

Gen II BLAU® Audi A4 Timing Belt Replacement Kits for the 1.8T engine contain a preassembled INA timing belt BASE kit. The timing belt, timing belt tensioner, damper, and hardware contained in this BASE kit are the same as those directly supplied to VAG.

  • Base INA Audi A4 Timing Belt Kit 1.8T

    INA Base Audi Timing Belt KitBASE

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • NTN Audi A4 Timing Belt
      Tensioner w/ Hardware
    • NTN Audi A4 Timing Belt
      Hydraulic Tensioning Damper
    • Timing Belt Service Interval
      Sticker

    Buy Audi A4 Timing Belt Kit Base

    Preassembled BASE kit comes directly from our partner Schaeffler who has been manufacturing timing belt components under the OFFICIAL O.E. INA brand for decades. The timing belt, timing belt tensioner, damper, and hardware contained in this BASE kit are the same as those directly supplied to VAG.
  • Enhanced INA Audi A4 Timing Belt Kit 1.8T

    INA Enhanced Audi Timing Belt KitENHANCED

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • NTN Audi A4 Timing Belt
      Tensioner w/ Hardware
    • NTN Audi A4 Timing Belt
      Hydraulic Tensioning Damper
    • Timing Belt Service Interval
      Sticker

    Other Components:
    • Graf Water Pump w/ O-Ring
      Gasket and Water Pump Bolts
    • Thermostat w/ O-Ring
    • Thermostat Housing w/ Hardware
    • Flennor Gates Power Steering
      Alternator Serpentine Belt
    • Flennor Gates AC Compressor
      Serpentine Belt
    • Front Crank Seal
    • Camshaft Seals

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      Audi A4 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy Audi A4 Timing Belt Kit Enhanced
  • Enhanced Plus INA Audi A4 Timing Belt Kit 1.8T

    INA Enhanced + Audi Timing Belt KitENHANCED +

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • NTN Audi A4 Timing Belt
      Tensioner w/ Hardware
    • NTN Audi A4 Timing Belt
      Hydraulic Tensioning Damper
    • Timing Belt Service Interval
      Sticker

    Other Components:
    • Graf Water Pump w/ O-Ring
      Gasket and Water Pump Bolts
    • Thermostat w/ O-Ring
    • Thermostat Housing w/ Hardware
    • Flennor Gates Power Steering
      Alternator Serpentine Belt
    • Flennor Gates AC Compressor
      Serpentine Belt
    • Front Crank Seal
    • Camshaft Seals
    3 Liters German Ravenol G12   Plus Antifreeze (2 - 1.5L Bottles)

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      Audi A4 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy Audi A4 Timing Belt Kit Enhanced +

2001 - 2001 Later VIN and AWM Engine Code

Please Note: All 2001 models have the AWM engine code. However, 2001 AWM engines had a VIN split with two different timing belt system possibilities. 2001 owners will also need to confirm their VIN #. This kit is for the later VIN system, starting with VIN 042385. How To Decipher Your Audi VIN Number.

Gen II BLAU® Audi A4 Timing Belt Replacement Kits for the 1.8T engine contain a preassembled INA timing belt BASE kit. The timing belt, timing belt tensioner, damper, and hardware contained in this BASE kit are the same as those directly supplied to VAG.

  • Base INA Audi A4 Timing Belt Kit 1.8T

    INA Base Audi Timing Belt KitBASE

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • Lintens Audi A4 Timing Belt
      Tensioner
    • Lintens Audi A4 Timing Belt
      Tensioner Idler w/ Bracket
    • Timing Belt Service Interval
      Sticker

    Buy Audi A4 Timing Belt Kit Base

    Preassembled BASE kit comes directly from our partner Schaeffler who has been manufacturing timing belt components under the OFFICIAL O.E. INA brand for decades. The timing belt, timing belt tensioner, damper, and hardware contained in this BASE kit are the same as those directly supplied to VAG.
  • Enhanced INA Audi A4 Timing Belt Kit 1.8T

    INA Enhanced Audi Timing Belt KitENHANCED

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • Lintens Audi A4 Timing Belt
      Tensioner
    • Lintens Audi A4 Timing Belt
      Tensioner Idler w/ Bracket
    • Timing Belt Service Interval
      Sticker

    Other Components:
    • Graf Water Pump w/ O-Ring
      Gasket and Water Pump Bolts
    • Thermostat w/ O-Ring
    • Thermostat Housing w/ Hardware
    • Flennor Gates Power Steering
      Alternator Serpentine Belt
    • Flennor Gates AC Compressor
      Serpentine Belt
    • Front Crank Seal
    • Camshaft Seal

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      Audi A4 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy Audi A4 Timing Belt Kit Enhanced
  • Enhanced Plus INA Audi A4 Timing Belt Kit 1.8T

    INA Enhanced + Audi Timing Belt KitENHANCED +

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing
      Belt
    • Lintens Audi A4 Timing Belt
      Tensioner
    • Lintens Audi A4 Timing Belt
      Tensioner Idler w/ Bracket
    • Timing Belt Service Interval
      Sticker

    Other Components:
    • Graf Water Pump w/ O-Ring
      Gasket and Water Pump Bolts
    • Thermostat w/ O-Ring
    • Thermostat Housing w/ Hardware
    • Flennor Gates Power Steering
      Alternator Serpentine Belt
    • Flennor Gates AC Compressor
      Serpentine Belt
    • Front Crank Seal
    • Camshaft Seal
    3 Liters German Ravenol G12   Plus Antifreeze (2 - 1.5L Bottles)

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      Audi A4 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy Audi A4 Timing Belt Kit Enhanced +

B6 Platform 2002-2005 Models

2002-2005 [2003-2006 Cabriolet] 1.8T Audi A4 model years had only one timing belt system option. Owners will not need to confirm their engine code or VIN #.

Gen II BLAU® Audi A4 Timing Belt Replacement Kits for the 1.8T engine contain a preassembled INA timing belt BASE kit. The timing belt, timing belt tensioner, damper, and hardware contained in this BASE kit are the same as those directly supplied to VAG.

  • Base INA Audi A4 Timing Belt Kit 1.8T

    INA Base Audi Timing Belt KitBASE

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing Belt
    • Lintens Audi A4 Timing Belt
      Tensioner
    • Lintens Audi A4 Timing Belt
      Tensioner Idler w/ Bracket
    • Timing Belt Service Interval
      Sticker

    Buy Audi A4 Timing Belt Kit Base

    Preassembled BASE kit comes directly from our partner Schaeffler who has been manufacturing timing belt components under the OFFICIAL O.E. INA brand for decades. The timing belt, timing belt tensioner, damper, and hardware contained in this BASE kit are the same as those directly supplied to VAG.
  • Enhanced INA Audi A4 Timing Belt Kit 1.8T

    INA Enhanced Audi Timing Belt KitENHANCED

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing Belt
    • Lintens Audi A4 Timing Belt
      Tensioner
    • Lintens Audi A4 Timing Belt
      Tensioner Idler w/ Bracket
    • Timing Belt Service Interval
      Sticker

    Other Components:
    • Graf Water Pump w/ O-Ring
      Gasket and Water Pump Bolts
    • Flennor Gates Serpentine Belt
    • Front Crank Seal
    • Camshaft Seal

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      Audi A4 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy Audi A4 Timing Belt Kit Enhanced
  • Enhanced Plus INA Audi A4 Timing Belt Kit 1.8T

    INA Enhanced + Audi Timing Belt KitENHANCED +

    Preassembled BASE INA Kit:
    • INA Gates Audi A4 Timing Belt
    • Lintens Audi A4 Timing Belt
      Tensioner
    • Lintens Audi A4 Timing Belt
      Tensioner Idler w/ Bracket
    • Timing Belt Service Interval
      Sticker

    Other Components:
    • Graf Water Pump w/ O-Ring
      Gasket and Water Pump Bolts
    • Flennor Gates Serpentine Belt
    • Front Crank Seal
    • Camshaft Seal
    3 Liters German Ravenol G12   Plus Antifreeze (2 - 1.5L Bottles)

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      Audi A4 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy Audi A4 Timing Belt Kit Enhanced +