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HKS's Super Cooling Pro grommet head gasket reworks coolant flow through the G16E to even out the knock limit between cylinders for more consistent, reliable power. Enlarged water passages feed the front of the head, an extra passage cools the direct-injector seal area, and an added cross-cylinder passage improves heat management. The 0.8mm thickness suits higher-compression combinations.
Details: Grommet-type head gasket, 0.8mm thickness; Super Cooling Pro optimized coolant routing; Enlarged coolant passages to the front of the head; Added cooling passage at the direct-injector seal; Added passage between cylinders
Fitment: 2023+ Toyota GR Corolla (GZEA14H) and GR Yaris (GXPA16), G16E-GTS — Shared G16E-GTS engine internal. Super Cooling Pro requires machining - grooving the head and drilling the block/head to align the added coolant passages. Professional installation required.
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