Megan Racing 2-Row Aluminum Radiator | 2002-2007 WRX/STI | MR-RT-SI04ST

The Megan Racing high-performance 2-row aluminum radiator is a proven, cost-effective cooling upgrade for the 2002–2007 Subaru WRX and STI. Designed for spirited driving and track use, it delivers significantly improved heat dissipation over the stock unit — often reducing engine temps by 20°F or more. Includes a 1.1 BAR radiator cap.

Features

• 2-row aluminum core construction for superior heat dissipation
• Direct bolt-on fitment for 2002–2007 Subaru WRX/STI
• Significant coolant temperature reduction vs. stock
• Includes 1.1 BAR radiator cap
• Ideal for street, track, and drift applications

Installation Notes

• Flush the radiator before installation and purge all air pockets from the cooling system
• May require minor modification to stock fan shroud mounting holes
• Upper radiator hose may need to be trimmed slightly to accommodate the increased radiator thickness — measure twice, cut once
• 2002–2003 WRX: only one radiator cap location (coolant reservoir on intake manifold) — leave cap closed
• 2004+ WRX/STI: two radiator cap locations — radiator and reservoir

Fitment

Warranty

Sold as-is. Professional installation recommended.

⚠️ WARNING: This product can expose you to chemicals including aluminum and its compounds, which are known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.