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Early 1GR-FE head gasket vs 2006 on- A visual comparison
There is much debate on why the part numbers for the head gasket changed in 2006, be it due to a new supplier, or a new design... or both. I can definitively say the design was changed. I don't know if the supplier was also. These are both OEM Toyota gaskets.
I asked my mechanic to snap a photo of the 03-05 head gasket, vs the one that replaced it from 06 on, this applies to ALL 1GR-FE engines of these years. This 2006 head gasket now supercedes ALL 1GR-FE gaskets, regardless of year.
I am not a mechanic or engineer, I am simply providing this photo so you can see the physical differences of each gasket.
Perhaps someone who knows why these changes were made can chime in. Notice the curvature that goes with each cylinder vs the straight edge of the old. Also the Coolant channels are of different shape. It appears that they didn't add or remove any materials overall, they just placed it in different locations. Forgive this pic as its a photo of a photo.
07-26-2016, 06:13 PM
