Catalytic Converter for Pontiac G5 (2009-2010) 2.2L Front

Direct-Fit Front Catalytic Converter for 2009-2010 Pontiac G5 (Delta)

What it Does: The front catalytic converter treats raw exhaust emissions from the 2009-2010 Pontiac G5 2.2L engine, eliminating catalyst efficiency DTCs like P0420 while maintaining factory exhaust velocity.

The Stock Pontiac G5 Catalyst Degradation

Over tens of thousands of thermal cycles, factory converters on the Delta chassis suffer from washcoat erosion, carbon fouling, and structural substrate fracturing. Thermal shock and vibration deteriorate the internal ceramic brick, restricting exhaust scavenging and suffocating engine efficiency. This breakdown inevitably triggers persistent P0420 check engine codes and causes the vehicle to fail state OBD-II emissions readiness tests.

The Engineering Solution

Designed as a direct-fit bolt-on assembly, this converter features an anti-corrosive stainless steel shell built to resist heat fatigue and underbody road debris. The internal ceramic substrate is engineered with a dense precious-metal catalyst loading to maximize hydrocarbon and carbon monoxide burn-off. Mandrel-formed transitions and OE-matched heavy-gauge flanges ensure a leak-free seal directly to your exhaust manifold and intermediate pipe, restoring factory backpressure and engine performance on the 2.2L LAP Ecotec platform. Replaces OEM part numbers 19421, 642061, 53857, and 50459.

What's Included

• 1x Front Catalytic Converter
• Mounting Hardware

Technical Specifications

Compatibility

• 2009 Pontiac G5 Base / SE (2.2L L4 Gas)
• 2010 Pontiac G5 Base / SE (2.2L L4 Gas)

Frequently Asked Questions & Fitment Warnings

Does this fit the Delta G5?

Yes, this is a direct fit for the 2009-2010 Pontiac G5 equipped with the 2.2L LAP Ecotec engine. Not legal for sale or use in California, New York, Colorado, or Maine emissions applications.

Is welding required for installation?

No, this unit is engineered as a direct replacement bolt-on component matching factory flange dimensions.

The Pontiac Standard

Engineered to meet Federal EPA standards, this converter preserves exhaust acoustic quality and throttle response while restoring emissions integrity to your Pontiac compact sport platform.