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.
![PLM [15-21 WRX] Equal Length Turbo Header Manifold | PLM-SUBARU-HEADER-GK-EL](https://cdn.shopify.com/s/files/1/0075/8703/7237/files/Screenshot2025-04-21220233.png?v=1748367383&width=480)
