Catalytic Converter for Volvo XC90 (2005-2011) 4.4L Rear

Direct-Fit Rear Catalytic Converter for 2005-2011 Volvo XC90

What it Does: The direct-fit rear catalytic converter replaces degraded factory emissions equipment on the 2005-2011 XC90 to clear catalyst efficiency trouble codes and restore exhaust scavenging.

The Stock Volvo XC90 Catalytic Converter Degradation

The transversal packaging of the B8444S 60-degree V8 in the P2 platform exposes downstream emissions components to intense thermal cycling and tight bend radiuses. Over time, the stock rear converter suffers from washcoat depletion, carbon-fouled ceramic substrates, and structural fatigue at the flex joint. This exhaust restriction increases backpressure against the cylinder heads, leading to downstream O2 sensor fault codes (such as P0420/P0430), elevated exhaust gas temperatures (EGT), and noticeable power loss across the midrange.

The Engineering Solution

Engineered as a bolt-on assembly, this rear replacement features heavy-gauge 409 stainless steel tubing coupled with a reinforced double-braided interlock flex pipe section to isolate engine rock. The internal high-flow ceramic substrate is washcoated with balanced precious metal loadings (platinum, palladium, rhodium) to ensure rapid light-off and stoichiometric emissions reduction. Mandrel-bent transitions eliminate exhaust turbulence, matching factory exhaust velocity without requiring cutting, welding, or custom fabrication to the factory hangars.

Technical Specifications

Compatibility

• 2005 Volvo XC90 4.4L V8 (AWD)
• 2006 Volvo XC90 4.4L V8 (AWD / Ocean Race)
• 2007 Volvo XC90 4.4L V8 (AWD / Sport)
• 2008 Volvo XC90 4.4L V8 (AWD)
• 2009 Volvo XC90 4.4L V8 (AWD / R-Design)
• 2010 Volvo XC90 4.4L V8 (AWD / R-Design)
• 2011 Volvo XC90 4.4L V8 (AWD / R-Design)

Frequently Asked Questions

Does this fit the P2 XC90?
Yes, this is a direct fit for the 2005-2011 Volvo XC90 equipped with the B8444S engine.

Will this direct-fit unit trigger a Check Engine Light (CEL)?
No, it features high-efficiency catalytic washcoats calibrated to satisfy European onboard diagnostic parameters without post-cat O2 sensor errors.

The Volvo Precision Standard

European platforms require tight tolerances to maintain closed-loop fuel trims without triggering diagnostic trouble codes. This unit delivers factory-calibrated backpressure and high-integrity sealing to preserve the smooth, sophisticated powerband expected from your luxury Swedish SUV.