Replacement catalytic converters for a 2009 Pontiac G6 generally run around $400 to $1,600 installed, depending on engine type and whether a single or dual converter is involved, with OEM parts costing more than aftermarket.
To understand what drives the cost, it helps to know the G6’s engine options and typical exhaust configurations. The 2009 G6 offered at least two engines—the 2.4-liter four-cylinder and the 3.5-liter V6—and some configurations use one catalytic converter while others use two. Prices vary by part choice and labor rates, and regional emissions rules can influence what parts are legal to install.
What affects the price
The final price you see is shaped by several key factors. Consider these when getting quotes:
- Engine type and the number of catalytic converters (single vs. dual) in your G6 model.
- Part choice: dealer OEM versus aftermarket (or remanufactured) converters.
- Labor costs, which vary by mechanic/shop and geographic region.
- Regional emissions requirements and certification (some regions require CARB-approved parts).
- Condition and fitment: whether the part is new, used, or remanufactured, and whether it includes gaskets and clamps.
Understanding these factors helps you compare apples to apples when shopping for a replacement catalytic converter.
Parts options
There are several options for replacing a catalytic converter on a 2009 Pontiac G6. The right choice depends on budget, local rules, and the vehicle's engine configuration.
- OEM catalytic converters — GM-approved parts that fit exactly and often come with a warranty, but cost more.
- Aftermarket catalytic converters — non-OEM parts that are typically less expensive; ensure CARB/EPA compliance if required in your state and check warranty terms.
- Remanufactured converters — reused cores rebuilt to specification, usually cheaper but with varying warranties and reliability depending on the remanufacturer.
- Full exhaust or multiple-converter replacements — sometimes recommended if other exhaust components are corroded or failing, potentially affecting overall performance and emissions.
Choosing the right option involves balancing cost, reliability, and regulatory compliance for your vehicle.
Estimated price ranges
Prices include parts and labor estimates. Actual quotes depend on the engine, number of converters, and local rates.
- Single catalytic converter (1-cat) — Part costs can range from roughly $150–$600 depending on aftermarket vs OEM; labor typically $100–$250. Installed price commonly in the $350–$900 range with aftermarket parts; OEM parts can push the total higher, often $500–$1,300.
- Dual catalytic converters (2-cat) — Parts for both units commonly $300–$900 total; labor typically $200–$600. Installed price commonly in the $600–$1,900 range, with OEM parts potentially elevating the total.
For an exact number, request written quotes that itemize parts and labor and specify the engine code and whether the shop uses CARB-compliant parts if required in your state.
What to do next
To get the best deal, obtain quotes from multiple sources—local independent shops, national chains that offer installation, and GM dealers. Ask for a full breakdown of parts and labor and confirm emissions compliance for your location.
Where to buy or get quotes
Check with local auto repair shops, national parts retailers (such as AutoZone, Advance Auto Parts, O'Reilly Auto Parts, or NAPA) for quotes and installation services. You can also explore reputable online retailers that offer direct-fit catalytic converters and list installer options through partner shops.
Summary
Prices for replacing a catalytic converter on a 2009 Pontiac G6 vary widely by engine configuration (single-cat vs dual-cat), part choice (OEM vs aftermarket vs remanufactured), and local labor rates. Expect roughly $350–$900 for a single-cat installation with aftermarket parts and $600–$1,900 for dual-cat installations, with OEM parts and dealer installation at the higher end. Always verify CARB compliance where required, compare multiple quotes, and consider both part quality and warranty when making a decision.