Direct Fit Catalytic Converter 2.5L for 2010-2014 WRX & STI

MagnaFlow Direct Fit Catalytic Converter 2.5L, made to fit the 2008-2016 Subaru STI / 2010-2014 WRX. Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5421012.

Materials and Construction

With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required.

Fits These Vehicles

Features & Specs

• MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment.
• By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and the compact, low-mass design also allows for greater thermal efficiency.
• MagnaFlow 5421012 includes (1) Flange Gasket, (1) Donut Gasket and interchanges with OE parts 44611AA250.
• This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
• Brand: MagnaFlow
• Part number: MAG5421012

Straight from SubiSpeed

Check your state emissions requirements before ordering: some states require CARB-approved converters. Replace the O2 sensors and exhaust gaskets while the system is open if they are old.