PLM 4-1 Hood Exit Race Header - B-series

Private Label MFG Power Driven B-Series hood exit race header (4-1 Megaphone) features a true 4-1 Megaphone merge to create equal exhaust flow. This header delivers the best peak horsepower gains while utilizing a 2 piece design. This is ideal for all forms of competition; Autocross, Drag racing and road racing. Recommended for 1.8-2.2L engine displacements. Features Made of 304 Brushed Stainless steel( Hand TIG Welded 02 extension needed Modifications required for A/C & P/S usage CNC-ed machined manifold flange One year warranty 18G on the 304 S/S ; measured at .049" to .050" OEM spec header gasket included Exhaust heat shield trim included Pre-assembled (two piece design) Half-core radiator must be used with a slim fan For off-road use only  - not carb legal in CA. Vehicle Applications: 88-91 Civic/CRX (B-swap + traction bar a must), 92-00 Civic (B-swap), 93-97 Delsol (B-swap), 90-93 Integra (traction bar a must), and 94-01 Integra.