The exhaust manifold found on the 2002-2006 Nissan Altima DOHC 4 Cylinder Engine were designed to combine the exhaust gasses from each of the cylinders quickly with a manifold that was cost effective to produce. Our 4-1 off-road racing headers are designed to allow the exhaust gasses to flow more freely from each cylinder and combine in a more efficient manner. Tubing has been optimized for the 2.5L engine. This creates a reduction in cylinder backpressure and improved exhaust gas velocity. These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound.
Package Included:
1 x Header exhaust system
All necessary hardware, bolts, and gaskets included
Compatible with:
02-06 Nissan Altima 2.5L l4
  • Application: 02-06 Nissan Altima 4-Cylinder
  • Inlet: 2"x1.25" (Rectangular) / Outlet: 2.5"
  • Made of High Quality T304 Stainless Steel for Strength & Durability
  • Constructed with TIG Welded CNC Machine Flange for Percision & Fitment
  • Comes with O2 Sensor Bung Insertion & Metal Gasket

For 02-06 Nissan Altima Performance 4-1 Design Stainless Steel Exhaust Header Kit (Black Ceramic Coated) S SL 03 04 05

Write a Review
This item is unavailable right now.Telling you that an item is out of stock is basically the last thing we wanted to do. We're sorry.Sad Face