- -A thin spacer sheet is inserted in-between
the bead plates so as to assure wide area
gas sealing structure
-Basic sealing performance improvement.
-Basic accuracy-dependant allowable
-Counter-surface damage relief
-Bore distortion reduction
- Multi-sealing line configuration by the introducing
full and half beads around the cylinder bore.
- Sealing performance improvement
- Stress amplitude reduction of bore bead-
fatigue resistance improvement
- Simple structure for cost reduction
- Improved fastened thickness deviation and
crevice volume reduction.
Introduced on Toyota vehicles in June,