Fel‑Pro steel‑core performance head gasket (1023) uses a stainless steel armor and wire ring design to concentrate sealing around the combustion chamber for high‑pressure and high‑movement engines. The steel wire rings raise combustion sealing force significantly compared with standard gaskets; this performance gasket is validated for demanding applications and is not intended for use in emission‑controlled vehicles.
Fel-Pro 1023 Steel core laminate Engine Cylinder Head Gasket