Catalytic Converter for Saturn Vue (2004-2007) 3.5L

Direct-Fit Manifold Catalytic Converter Pair for 2004-2007 Saturn Vue (GMT315)

What it Does: This direct-fit manifold catalytic converter pair replaces both banks on the 2004-2007 Saturn Vue (GMT315) L66 3.5L V6 to restore emissions conversion and clear catalyst faults.

The Stock Saturn Vue Manifold Converter Failure

On the GMT315 chassis powered by the L66 3.5L V6, the factory catalytic converters are integrated directly into the front and rear exhaust manifolds right at the cylinder heads. Continuous thermal cycling and severe close-coupled heat soak fatigue the stock welds and fracture the internal ceramic substrate. Once the monolith breaks apart or the precious-metal washcoat degrades, downstream oxygen sensors detect lost oxygen-storage capacity and trigger P0420/P0430 fault codes.

Common Symptoms of a Failing OEM Catalytic Converter

• Check Engine Light: Persistent P0420 or P0430 codes triggered by reduced catalyst oxygen-storage efficiency.
• Exhaust Rattle: Metallic noise at idle or under load caused by a fractured ceramic substrate shifting inside the housing.
• Power & Emissions Loss: Excessive exhaust backpressure from a clogged monolith and failed OBD-II readiness tests.

The Direct-Fit Stainless Exhaust Solution

This two-piece manifold converter set (interchange 45106 and 16451) replaces both banks simultaneously with corrosion-resistant stainless steel housings and mandrel-formed outlet pipes. Inside each assembly, a high-flow ceramic honeycomb substrate with a precious-metal catalyst washcoat efficiently oxidizes HC and CO while reducing NOx. Factory-style heat shields, cylinder-head flanges, and precision-welded O2 sensor bungs ensure direct bolt-on geometry without cutting or welding.

What's Included

• 2 x Exhaust Manifold Catalytic Converters (pair)
• 2 x Ring Gaskets
• 2 x 3-Bolt Flange Gaskets
• Bolts, nuts, and washers

Technical Specifications

Compatibility

• 2004 Saturn Vue (Base, Red Line) 3.5L V6
• 2005 Saturn Vue (Base, Red Line) 3.5L V6
• 2006 Saturn Vue (Base, Red Line) 3.5L V6
• 2007 Saturn Vue (Base, Red Line) 3.5L V6

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT315 Vue?

Yes. This is a direct fit for the 2004-2007 Saturn Vue (Base and Red Line) equipped with the L66 3.5L V6 engine. Does not fit 2.2L, 3.0L, or 3.6L engines; EPA federal compliant only—not CARB approved for vehicles registered in California, New York, Colorado, or Maine.

Will this clear P0420/P0430 codes, and are O2 sensors included?

Yes, it clears converter-induced P0420/P0430 codes; O2 sensors are not included. Transfer your existing sensors or install new units, and check all manifold and flange joints for exhaust leaks.

Are gaskets and mounting hardware included for installation?

Yes. Ring gaskets, 3-bolt flange gaskets, bolts, nuts, and washers are included. Let the exhaust cool fully, soak seized studs with penetrating oil, and torque all fasteners evenly.

The Saturn Precision Standard

Built for exact GMT315 exhaust geometry and emissions ECU precision, this stainless assembly delivers long-term thermal durability and CEL-free operation for your L66 3.5L V6.