2.5L Direct Fit Converter for 2006-2007 STI

MagnaFlow 2.5L Direct Fit Converter, made to fit the 2006-2007 Subaru STI. Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5421025.

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 5421025 includes (1) Flange Gasket, (1) Donut Gasket, (1) Flat Washer, (1) Bolt and interchanges with OE parts 44101FE040, 44101FE090, 44611AA130, 44611AA300.
• 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: MAG5421025

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.