Equal Length Header for 2015-2021 Subaru WRX by IAG Performance

The IAG Performance Equal Length Header is the perfect upgrade to boost the performance and power in your 2015-2021 Subaru WRX with the FA20 DIT engine. While the OEM headers restrict the airflow behind the engine port, the collector pipes and the turbo port, IAGs precision engineered header provides a clear path for increased airflow, resulting in more power and greater efficiency.

In addition to the improvements in airflow, the equal-length tubing in IAGs Equal Length Header decreases turbulence that is commonly found in unequal-length (UEL) header setups. The main goal of the exhaust system is to move gases away from the engine as quickly as possible. With UEL headers, it takes more time for the gases to pass through the two longer header pipes to reach the collector, causing an imbalance of backpressure at the exhaust ports, decreasing the overall performance of the exhaust.

The lingering exhaust gasses in the longer tubes of the UEL header systems can also cause increased temperatures at the cylinders, which can lead to ringland failure. This problem is solved by the IAG Equal Length Header’s equal-length tubes, which provide lower and more stable cylinder temperatures, helping to reduce the chance of ringland failure.

Features

• 304 Stainless Steel
• 45mm (1.77 inch) inner diameter throughout
• Flange openings at the turbo ports have been widened to 42mm (1.65 inch)

Benefits

• Improvement over the 40mm restriction found in the OEM version
• Significantly increased flow

Applications

• 2015-2021 Subaru WRX

What’s In The Box?

• 1 – Equal Length Header
• 1 – Hardware Kit

Warranty

• 12-Month or 12,000 mile Limited Manufacturers Warranty