20V 4age – TRD head gasket – 0.8mm
20V 4age- TRD head gasket
Genuine Tokyo Technocraft product with a thickness of 0.8mm and a heavy duty 4-layer metal construction.
Compression ratio change
Due to being a thinner gasket than genuine this part raises the static compression ratio. Shown below is the change when used in the place of the original Toyota part. Figures are on the assumption of the engine being otherwise unmodified and the quotes figures being accurate.
20V Silvertop: From 10.5 to 11:1
20V Blacktop: From 11:1 to 11.5:1
Bore size compatibility<