Cost is typically in the range of $500 to $1,500, depending on engine type, whether there is one or two catalytic converters, and your choice of aftermarket or OEM parts.
What determines the price
Several factors influence the final bill. Here’s what usually drives the difference in price for a 2003 Camry.
Engine configuration and number of converters
Some 2003 Camry models use a single catalytic converter, while others have two. The converter count directly affects both parts and labor costs, with dual-cat replacements generally being more expensive.
Parts: aftermarket vs OEM
Aftermarket direct-fit catalytic converters tend to be cheaper than genuine Toyota OEM parts, but fit, warranty terms, and availability can vary. OEM parts cost more but may offer a guaranteed fit and Toyota-backed warranty in some cases.
Labor and location
Labor rates vary by region and shop. Extra time may be needed if the exhaust system is rusty or difficult to access, or if there are downstream components that must be inspected or replaced.
Estimated price ranges for a 2003 Camry
Below are common scenarios for a Camry from around 2003. The figures assume the shop replaces only the catalytic converter(s) and does not include any unrelated exhaust repairs.
- Single catalytic converter replacement (one cat): Typical total cost with aftermarket parts and labor is about $300–$900. Using OEM parts can push the total to roughly $600–$1,400.
- Dual catalytic converters replacement (two cats): Typical total cost with aftermarket parts and labor is about $600–$1,800. Using OEM parts can push the total to roughly $1,200–$3,000.
Prices can vary by region and shop, so it’s wise to obtain multiple written estimates and ask for a breakdown of parts versus labor, as well as any diagnostic fees or additional repairs that might be needed if the exhaust system shows heavy rust or leaks elsewhere.
What to do when shopping for quotes
To avoid surprises, request written estimates from at least two reputable shops. Ensure the estimate lists:
- The exact part type (aftermarket vs OEM) and whether it’s a direct-fit or universal converter
- Labor hours and rate, plus any shop fees
- Warranty terms on the catalytic converter
- Whether any related exhaust components or sensors will be inspected or replaced
Summary: Replacing a catalytic converter on a 2003 Toyota Camry typically costs between $500 and $1,500 when using aftermarket parts, with higher totals for OEM parts or dual-cat setups. The exact price depends on engine configuration, converter count, part quality, and local labor rates. Getting multiple estimates and understanding the scope of work will help ensure a fair price.


