• Precision CNC machined from 6061T6 billet aluminum.
• Scalloped design allows maximum coolant flow to the head.
• Provides strength to stock sleeves and prevents sleeve walk that can cause premature head gasket failure.
• B16, B17, & B18 series engines
• All Acura Integra DOHC 4 cyl.
• All Honda Civic DOHC 4 cyl.