Catalytic Converter for Chrysler Pacifica (2004-2006) 3.5L

Direct-Fit Catalytic Converter for 2004-2006 Chrysler Pacifica

What it Does: The direct-fit catalytic converter replaces the clogged or degraded factory emissions unit on the 2004-2006 Pacifica to restore proper exhaust flow, clear P0420/P0430 diagnostic trouble codes, and reduce harmful tailpipe emissions.

The Stock Chrysler Pacifica Catalyst Degradation and Thermal Fatigue

Factory exhaust assemblies on the CS platform Pacifica are prone to washcoat degradation and structural substrate fracture over extended thermal cycles. The factory EGJ 3.5L SOHC V6 operates under high exhaust gas temperatures during sustained load, accelerating the thermal sintering of the internal precious metal washcoat. Over time, physical washcoat breakdown leads to reduced oxygen storage capacity (OSC), triggering recurring catalyst efficiency failure codes. Additionally, road debris and engine thermal expansion cause fatigue at the original mild steel flange welds, resulting in micro-fissures, exhaust leaks upstream of downstream O2 sensors, and loss of scavenging velocity.

The Engineering Solution

This replacement assembly incorporates a heavy-gauge 409 stainless steel outer shell designed to resist road salt corrosion and severe thermal cycling. Inside, a high-density, flow-optimized honeycomb ceramic substrate features a robust chemical washcoat that ensures rapid light-off and reliable emissions reduction without creating excessive backpressure. Engineered to mount directly into factory hangers and mating flanges, it includes precision-cut mounting hardware, a replacement clamp, and heavy-duty composite exhaust gaskets. The direct-fit geometry retains proper downstream oxygen sensor orientation, preventing wiring harness strain while restoring smooth exhaust gas evacuation across the mid-range power band.

Technical Specifications

Compatibility

• 2004 Chrysler Pacifica Base 3.5L V6 (FWD / AWD)
• 2005 Chrysler Pacifica Base 3.5L V6 (FWD / AWD)
• 2005 Chrysler Pacifica Limited 3.5L V6 (FWD / AWD)
• 2005 Chrysler Pacifica Touring 3.5L V6 (FWD / AWD)
• 2006 Chrysler Pacifica Base 3.5L V6 (FWD / AWD)
• 2006 Chrysler Pacifica Limited 3.5L V6 (FWD / AWD)
• 2006 Chrysler Pacifica Touring 3.5L V6 (FWD / AWD)

Frequently Asked Questions

Does this fit the CS Pacifica?
Yes, this is a direct fit for the 2004-2006 Chrysler Pacifica equipped with the 3.5L SOHC EGJ engine.

Is this catalytic converter legal for road use in California?
This EPA-compliant unit is not CARB-approved and cannot be sold, shipped, or installed on vehicles registered in California or CARB-restricted states.

The Chrysler Fleet Reliability Standard

Engineered for high-mileage family haulers and daily utility, this replacement converter delivers the long-term durability, structural integrity, and leak-free reliability needed to handle heavy loads, daily commutes, and demanding road conditions.