The JE Pro Seal head gasket for Honda B18A non‑VTEC applications is specified with an 83mm bore and 0.033-inch thickness (ref C4181-030). It functions as the critical seal between the cylinder head and block, supporting combustion chamber integrity and coolant passage sealing during head service or engine rebuilds. Use it where the 83mm bore and 0.033in thickness match the application.
JE Pro Seal Honda B18A non Vtec 83mm 0.033in Head Gasket (ref C4181-030)