Related VW Jetta Timing Belt Replacement for 1.8T 20 Valve Engine

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What to replace while changing the VW Jetta timing belt on the 1.8T engine.

1.8T VW Timing Belt Parts

IMAGE DESCRIPTION The VW Jetta 1.8T 20 valve engine's timing belt system is a relatively simple timing belt design. Apart from the timing belt itself the VW Jetta 1.8T 20 valve engine's timing belt system consists of 4 serviceable timing belt components. One is the water pump that is driven by the timing belt. Second is the timing belt tensioner. Third is the hydraulic tensioner damper which provides variable hydraulic loaded tension to the timing belt abd lastly is the small idler bearing that mounts to the hydraulic tensioner damper. All of these components work in sync with each other to guide and tension 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 VW Jetta 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 VW Jetta 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 VW Jetta water pump during timing belt service? 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 a VW water pump can weaken and is the primary reason why a water pump eventually fails.

Thermostat

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

Oil leaks are very common on VW Jetta 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 VW Jetta Valve Cover Gasket and Cam Chain Tensioner Gaskets, click here.

 

1.8T VW Jetta Timing Belt Replacement Kits

BLAU OFFICIAL O.E. INA VW Jetta Timing Belt Kits for 1.8T 20 Valve Engine

Gen II BLAU® VW Jetta 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 VW Jetta Timing Belt Kit 1.8T

    INA Base VW Timing Belt KitBASE

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

    Buy VW Jetta 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 VW Jetta Timing Belt Kit 1.8T

    INA Enhanced VW Timing Belt KitENHANCED

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

    Other Components:
    • Graf Water Pump w/ O-Ring
      Gasket & Hardware
    • Thermostat w/ O-Ring
    • Thermostat Housing w/ Hardware
    • Flennor Gates Serpentine Belt
    • Front Crank Seal
    • Camshaft Seal

    also included...

    Blauparts Extras
    • Serpentine Belt Pulley Bolts
    • Motor Mount to Frame Rail Bolts
    • Motor Mount to Engine Bracket
      Stretch Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      VW Jetta 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy VW Jetta Timing Belt Kit Enhanced
  • Enhanced Plus INA VW Jetta Timing Belt Kit 1.8T

    INA Enhanced + VW Timing Belt KitENHANCED +

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

    Other Components:
    • Graf Water Pump w/ O-Ring
      Gasket & Hardware
    • Thermostat w/ O-Ring
    • Thermostat Housing w/ Hardware
    • 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
    • Motor Mount to Frame Rail Bolts
    • Motor Mount to Engine Bracket
      Stretch Bolts
    • Thread Locking Compounds
    • Anti Seize Compound
    • Blauparts Detailed Step-by-Step
      VW Jetta 1.8T Timing Belt
      Instructions - Numerous pages
      and images of detailed step-by-
      step guidelines, including front
      bumper removal.

    Buy VW Jetta Timing Belt Kit Enhanced +