Catalytic Converter for Buick Verano (2012-2017) 2.4L

Direct-Fit Catalytic Converter for 2012-2017 Buick Verano

What it Does: Restores exhaust scavenging efficiency and eliminates P0420 catalytic efficiency codes on the 2.4L Ecotec engine.

The Stock Verano Catalytic Substrate Degradation

Factory catalytic converters on the Delta II chassis Buick Verano frequently suffer internal ceramic washcoat degradation and thermal fatigue from continuous thermal cycling. Over time, excessive backpressure builds up from carbon fouling or melted honeycomb channels, choking exhaust scavenging, lowering fuel economy, and triggering persistent check engine lights.

The Engineering Solution

This direct-fit replacement converter features a robust 409 stainless steel tubular casing housing a high-flow, heat-resistant ceramic monolith substrate loaded with precision precious metal catalysts. Engineered with laser-cut flanges and factory-positioned post-catalyst O2 sensor bungs, it bolts cleanly to the stock exhaust manifold and intermediate pipe without cutting or welding, restoring clean emissions burn and optimal exhaust velocity.

Technical Specifications

Compatibility

• 2012 Buick Verano Base / Convenience / Leather (2.4L L4 Gas)
• 2013 Buick Verano Base / Convenience / Leather (2.4L L4 Flex/Gas)
• 2014 Buick Verano Base / Convenience / Leather (2.4L L4 Flex/Gas)
• 2015 Buick Verano Base / Convenience / Leather (2.4L L4 Flex/Gas)
• 2016 Buick Verano Base / Convenience / Leather / Sport Touring (2.4L L4 Flex/Gas)
• 2017 Buick Verano Base / Leather / Sport Touring (2.4L L4 Flex/Gas)

The Buick Reliability Standard

Manufactured to precise OBD-II diagnostic tolerances, this converter preserves Buick's signature quiet cabin acoustic balance while ensuring seamless ECU integration and zero-CEL emissions compliance under everyday driving conditions.