aFe Twisted Steel Header for BMW M3 (E46) 01-06 L6-3.2L S54 afe48-36314-HC

• This aFe Twisted Steel Header carries many significant horsepower improvement admired by many.
• 1. 1-5/8” primary tubing into 2-1/2” tubing
• 2. Mandrel-bent for unrestricted flow
• 3. 3/8 IN thick, 304 stainless steel laser cut head flanges
• 4. Includes EPA compliant catalytic converters
• 5. 3-to-1 mitered merge collectors decrease turbulence and increases exhaust velocity
• 6. Optimized tube lengths improve flow and performance
• 7. Retains factory sensors
• 8. 100% hand TIG-welded construction ensures optimal strength and durability

aFe Twisted Steel Header for BMW M3 (E46) 01-06 L6-3.2L S54 afe48-36314-HC