Catalytic Converter for Porsche Cayenne (2008-2010) 3.6L Front
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Direct-Fit Front Catalytic Converters for 2008-2010 Porsche Cayenne (957)
What it Does: This pair of direct-fit front catalytic converter downpipes replaces degraded factory converters on the 2008-2010 Porsche Cayenne 957 3.6L to restore exhaust flow, eliminate catalyst faults, and maintain EPA-compliant emissions.
The Stock Porsche Cayenne Catalyst Failure
Thermal cycling degrades the OEM front converters on the M55.01 3.6L VR6, causing washcoat depletion and ceramic substrate fracture. Broken honeycomb creates exhaust rattles, excessive backpressure, and P0420/P0430 codes, while fatigued flex joints leak exhaust upstream of the O2 sensors.
The Direct-Fit Stainless Solution
Built for bolt-on service, these stainless steel downpipes feature factory 3-bolt flanges, hangers, and O2 bungs. Braided flex joints absorb engine movement to prevent flange stress, while a precious-metal ceramic honeycomb substrate restores HC, CO, and NOx conversion without cutting or welding.
What's Included
- 2 x Front Catalytic Converter Downpipes (pair)
- 4 x 3-Bolt Flange Gaskets
- 12 x Bolts with nuts and washers
Technical Specifications
| Fitment | 2008-2010 Porsche Cayenne |
|---|---|
| Engine / Chassis | M55.01 3.6L VR6 / 957 |
| Factory Output | 290 hp / 283 lb-ft |
| Replaces OEM Part # | N/A |
Compatibility
- 2008 Porsche Cayenne Base (3.6L V6 - Front Pair)
- 2009 Porsche Cayenne Base (3.6L V6 - Front Pair)
- 2010 Porsche Cayenne Base (3.6L V6 - Front Pair)
Frequently Asked Questions & Fitment Warnings
Does this fit the 957 Cayenne?
Yes, this is a direct fit for the 2008-2010 Porsche Cayenne equipped with the M55.01 3.6L V6 engine. Not compatible with Cayenne S, GTS, or Turbo V8 models, and not CARB-approved for vehicles registered in California, New York, Colorado, or Maine.
Are oxygen sensors included, and will this clear P0420/P0430?
No—transfer your existing O2 sensors or install new ones; replacing a worn converter resolves catalyst-efficiency codes once exhaust leaks and sensor faults are ruled out.
The Porsche Precision Standard
Built for European emissions precision, these downpipes restore factory exhaust flow, silence rattles, and keep your 957 Cayenne CEL-free.
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