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  • Kia & Hyundai G4Gc 2.0L Head Gaskets

Kia & Hyundai G4Gc 2.0L Head Gaskets

Author: ETP Engine Parts   Date Posted:16 February 2020 

Kia & Hyundai G4Gc 2.0L Head Gaskets main image Kia & Hyundai G4Gc 2.0L Head Gaskets image

Kia & Hyundai 2.0L G4GC Head Gasket Fitment

FITMENT GUIDE & FITMENT ISSUES

 

Applies to models

Kia

  • 2004-2008 Cerato
  • 2005-2015 Sportage

Hyundai:

  • 2004-2010 Tucson
  • 2007-2012 i30
  • 2000-2011 Elantra

The G4GC Head Gasket has a unique fitment method that needs to be carefully followed. Failure to do so can cause catastrohpic engine failure.

In this example, a cylinder head had overheated and subsequently warped. It required a full repair and recondition.

It was tested, fully repaired & reconditioned then fitted back to the vehicle.

 

Fitment Issues

After refitment, it was claimed that the cylinder head was faulty.

It was noted that the engine was now putting around 1 litre of engine oil into the radiator every 30 minutes or so. 

Clearly this is not correct and it was requested that the cylinder head and gasket was removed for inspection.

Inspection showed that the cylinder head itself was fine, there was no issues with the head itself.

Closer inspection showed two issues.

 

1 - Gasket in the wrong way around

With the G4GC head gasket, it is possible for it to be flipped end to end and fitted incorrectly. When the head gasket is fitted this way, it will expose the main oil pressure feed hole directly into the coolant passage. Doing this also then blocks main coolant passages at the rear of the head - which causes overheating. 

Whilst the head gasket can be fitted that way - it will fit, it shouldn't be, as it will cause damage as has been seen here. 

 

2 - Head Gasket sealant

This customer had covered the head gasket in gasket sealant. Gasket sealant should never be fitted to multi-layer steel head gaskets. Unless strictly required by the manufacturer, any sealant should never be used. Multi-layer steel head gaskets already come with a coating of sealant so do not require any more. Fitting more will result in rapid gasket failure.

 

In this case the head was cleaned, the correct gasket fitted and the car now runs perfectly.

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