Typical replacement cost ranges from about $800 to $2,500, influenced by model year, engine type (gasoline vs hybrid), and whether you use aftermarket or OEM parts. Higher costs can occur if multiple converters or sensors are involved, or if theft or damage is part of the job.
In this article we break down the main price drivers, offer ballpark ranges for both gasoline and hybrid Sienna models, and share tips to help you plan and save during a replacement.
What affects the price
Several factors determine how much you'll pay to replace a catalytic converter on a Toyota Sienna.
- Powertrain and model year: gasoline (non-hybrid) versus hybrid; some generations have more emissions components or multiple converters.
- Number of catalytic converters: certain Sienna configurations include more than one converter, which increases parts and labor costs.
- Part type: aftermarket (third-party) versus OEM (factory) parts; remanufactured options may also be available.
- Labor rates: vary by region, shop type (independent vs dealer), and local demand.
- Additional components: oxygen sensors, exhaust pipes, gaskets, or hangers that may need replacement during the job.
- Warranty and coverage: federal and state emissions warranties may cover all or part of the replacement if the failure is due to a defect; theft or accidental damage typically isn’t covered.
Understanding these factors helps you compare quotes and avoid surprises when a replacement is needed.
Cost ranges by powertrain
Gasoline Toyota Sienna (non-hybrid models)
Prices here reflect typical ranges for a gasoline Sienna with one catalytic converter; if your model has two or more, costs will be higher.
- Aftermarket catalytic converter (one): parts 350–900; labor 150–350; total 500–1,250.
- OEM catalytic converter (one): parts 800–1,800; labor 150–350; total 950–2,150.
- Other costs: replacing oxygen sensors or gaskets, if needed, may add 50–200 per item.
In practice, quotes for gasoline Sienna replacements commonly fall in the $1,000 to $2,000 range, depending on configuration and local labor rates.
Toyota Sienna Hybrid (2021–present)
Hybrid models often involve more components and may require replacements for multiple converters, which can raise the price.
- Aftermarket catalytic converters (all required for the vehicle): parts 600–1,600; labor 200–500; total 1,000–2,100.
- OEM catalytic converters (all required): parts 1,200–2,800; labor 200–500; total 1,400–3,300.
- Other costs: O2 sensors or related exhaust parts may add 50–250 per item.
Overall, hybrid Sienna replacement costs typically range from about $1,000 to $3,000, with higher quotes possible if two converters and multiple sensors are replaced or if installation requires dealer-level expertise.
Warranty and coverage
Catalytic converter work is often covered by federal emission warranties if the failure is due to a defect, typically lasting up to 8 years or 80,000 miles for many components, with California and some other states offering longer protections. Theft or accidental damage is usually not covered unless you have separate insurance or theft protection. Always check your vehicle’s warranty specifics and consult your dealer for coverage details related to your VIN and state.
Summary
Costs to replace a catalytic converter on a Toyota Sienna vary widely based on powertrain (gasoline vs hybrid), the number of converters, part choice (OEM vs aftermarket), and local labor rates. Expect roughly $800–$2,500 for typical cases, with hybrids and multi-converter setups often pushing toward the higher end. To minimize surprises, get multiple quotes, verify what’s included (parts and labor vs disposal fees), and check whether any warranty coverage applies. If the vehicle is under an emissions warranty, you may have the replacement covered in full or in part by the manufacturer or dealer.