---Manufactured from highest quality T304 grade stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing 4 - 2 - 1 tubular branch manifold ---Designed to fit the D series OEM and most aftermarket exhaust systems ---Crafted to noticeably improve throttle response Compatible with: --- Honda Civic D14, D15 & D16 1.4l, 1.5l & 1.6l engine 1988-2000 models.