Catalytic Converter for Subaru Impreza (2012-2016) 2.0L Rear

Direct-Fit Rear Catalytic Converter for 2012-2016 Subaru Impreza

What it Does: The Rear Catalytic Converter replaces the degraded factory emissions unit on the 2012-2016 Subaru Impreza to restore optimal exhaust gas velocity, resolve catalyst efficiency fault codes, and maintain federal emissions compliance.

The Stock Subaru Impreza Substrate Breakdown

Factory exhaust converters on the fourth-generation Impreza suffer from thermal fatigue and internal washcoat degradation over high mileage. As the factory catalyst breaks down, exhaust backpressure spikes and cross-flow efficiency drops, choking the naturally aspirated boxer engine. This restriction triggers stubborn P0420 diagnostic trouble codes (DTCs), reduces fuel economy, and compromises low-end torque delivery.

The Engineering Solution

Constructed from corrosion-resistant heavy-gauge stainless steel, this direct-fit rear converter assembly is engineered specifically for the FB20B engine platform. It features an advanced high-flow ceramic honeycomb substrate coated with precious metal catalyst materials to ensure thorough exhaust gas scrub without generating excess backpressure. Precision-machined, thick OE-style flanges and factory-correct hanger locations eliminate exhaust leaks and allow for seamless bolt-on installation without cutting, welding, or custom fabrication. Integrated hardware ensures tight mating to existing exhaust system joints.

Technical Specifications

Compatibility

• 2012-2016 Subaru Impreza 2.0i Base (Sedan & Hatchback)
• 2012-2016 Subaru Impreza 2.0i Premium (Sedan & Hatchback)
• 2012-2016 Subaru Impreza 2.0i Limited (Sedan & Hatchback)
• 2012-2016 Subaru Impreza 2.0i Sport Premium (Hatchback)
• 2012-2016 Subaru Impreza 2.0i Sport Limited (Hatchback)

Frequently Asked Questions

Does this fit the GP/GJ Impreza?
Yes, this is a direct fit for the 2012-2016 Subaru Impreza equipped with the FB20B 2.0L engine across both GJ sedan and GP hatchback chassis.

Will this converter clear a P0420 catalytic efficiency code?
Yes, when installed on a properly tuned engine with functioning oxygen sensors, this EPA-compliant unit restores nominal conversion efficiency to clear P0420 trouble codes.

The Subaru Boxer Caliber

Preserve the balance, fuel efficiency, and distinctive boxer engine acoustics of your Subaru. Built to exceed structural demands and maintain smooth exhaust pulse scavenging, this assembly delivers true bolt-on reliability for daily commuting and high-mileage road trips alike.