B16 B18 4-2-1 Tri-Y Header – Honda Civic & Acura Integra VTEC

B16 B18 4-2-1 Tri-Y Exhaust Header – Honda Civic & Acura Integra VTEC

Unlock more top-end power from your B-series VTEC build with this purpose-engineered 4-2-1 Tri-Y header. Redesigned from the ground up for improved fitment and exhaust flow, the larger 1 5/8" primary pipes and 2.5" collector flange work together to deliver immediate horsepower gains right across the rev range.

Specs & Features

• 4-2-1 Tri-Y design for optimised scavenging and top-end power
• 1 5/8" primary pipes with 2.5" collector flange
• Requires a 2.5" adapter flange (not included)
• Compatible with B-Series DOHC VTEC oil pan only
• Totally redesigned for improved fitment and flow
• Includes all necessary hardware and gaskets

Fitment

• 1999–2000 Honda Civic Si (B16, 1.6L DOHC VTEC)
• 1994–1997 Honda Del Sol (B16, 1.6L DOHC VTEC)
• 1990–2001 Acura Integra (B18, 1.8L DOHC VTEC)

⚠️ Important: This header requires a DOHC VTEC oil pan and a 2.5" adapter flange for installation. Not compatible with SOHC or non-VTEC B-series engines.