PLM Equal Length Header - Subaru WRX 2002-2014 / STI 2004-2021

The PLM Subaru WRX and STi EJ/EJ25 Equal Length Header delivers a smoother exhaust flow than the factory unequal-length design, for real power gains and improved throttle response. Built from high-quality stainless steel, it holds up under the rigors of high-performance driving while reducing backpressure. The equal length design optimizes exhaust pulse scavenging for more horsepower and torque across the RPM range.

Features:

• Equal length 304 stainless steel header
  
• Short primaries tubes - allows for quicker turbo spool up
  
• Symmetrical tubing design
  
• Stainless steel cast merge collector
  
• Specifications
  
• Primary tubes 1.65"
  
• Stepped to 2.0" piping at the 4-1 merge collector
  
• All mandrel bend tubing

Important Notes: 

• On 2006-2007 models, the oil cooler assembly is in the way, so you will need the oil filter from either the 02-05 WRX or 04-16 STI.
• On the 2002-2005 WRX, you will need the 2.5L or STI oil pan.