Catalytic Converter for Cadillac SRX (2004-2007) 3.6L Left & Right

Direct-Fit Left & Right Catalytic Converter for 2004-2007 Cadillac SRX

What it Does: The Left & Right Direct-Fit Catalytic Converter replaces failed OEM exhaust scrubbing units on the 2004-2007 Cadillac SRX 3.6L to clear diagnostic trouble codes, restore exhaust scavenging, and ensure Federal EPA emissions compliance.

The Stock Cadillac SRX Catalyst Degradation Problem

Factory exhaust converters on the first-generation GM Sigma I crossover suffer from severe thermal cycling and oil-vapor contamination typical of high-mileage LY7 High Feature engines. Over extended mileage, the stock internal monolith washcoat sinters and ceramic cells break down or clog. This restriction increases exhaust backpressure against the cylinder heads, spikes combustion chamber temperatures, chokes upper-RPM engine efficiency, and triggers persistent P0420 and P0430 catalyst efficiency trouble codes.

The Engineering Solution

Engineered as a bolt-on solution for dual-bank replacement, this left and right direct-fit assembly utilizes a heavy-gauge stainless steel outer shell designed to resist external road corrosion, structural deformation, and weld fatigue. Internally, a high-flow ceramic substrate coated in a uniform precious metal washcoat provides optimal chemical reduction of carbon monoxide, unburnt hydrocarbons, and nitrogen oxides. Robotically aligned, OE-specification connection flanges and pre-welded oxygen sensor bungs guarantee a sealed, leak-free union with the stock exhaust manifolds and intermediate pipes using the supplied hardware.

Technical Specifications

Compatibility

• 2004 Cadillac SRX Base 3.6L V6 (RWD / AWD)
• 2005 Cadillac SRX Base 3.6L V6 (RWD / AWD)
• 2006 Cadillac SRX Base 3.6L V6 (RWD / AWD)
• 2007 Cadillac SRX Base 3.6L V6 (RWD / AWD)

Frequently Asked Questions

Does this fit the GM Sigma I SRX?
Yes, this is a direct fit for the 2004-2007 Cadillac SRX equipped with the LY7 3.6L V6 engine.

Will this resolve downstream P0420 and P0430 diagnostic trouble codes?
Yes, the high-efficiency ceramic core restores target catalytic washcoat reactions, returning closed-loop downstream O2 sensor voltages to factory limits.

The Cadillac Precision Standard

Engineered to preserve the refined cabin acoustic isolation and precise powertrain management expected from a luxury crossover, this assembly restores OEM exhaust backpressure profiles without creating interior drone or exhaust vibration.