How much does it cost to replace a catalytic converter on a Chevy Impala?
The typical cost to replace a catalytic converter on a Chevy Impala ranges from about $500 to $2,500, depending on the model year, engine, and the part you choose. This broad spread reflects differences in parts, labor, and regional emissions requirements.
Pricing depends on whether you install an aftermarket or OEM converter, how many catalytic converters your particular Impala requires, local labor rates, and whether your state mandates CARB-compliant parts. The following sections break down the main costs, common scenarios, and tips to shop for a fair quote.
What affects the cost
Several factors can swing the price of a catalytic converter replacement for a Chevy Impala by hundreds of dollars.
- Parts type: aftermarket direct-fit versus OEM (dealer) replacements, and any CARB-compliant variants required in some states
- Number of catalytic converters: some Impala generations use one cat, others use two, which adds to parts and labor
- Engine and model year: different engines and mounting configurations affect fit and access
- Labor rates and shop type: dealer service departments typically charge more than independent shops
- Emissions requirements: California and a few other states require CARB-approved parts, which can raise price
- Ancillary work: oxygen sensors, exhaust clamps, gaskets, or pipe repairs may be needed and add to cost
- Accessibility and job complexity: hard-to-reach exhaust systems or rusted components increase labor time
Understanding these factors helps you compare quotes and budget accurately for your specific Impala configuration.
Typical cost scenarios
To give drivers a sense of price, here are rough ranges based on common purchase choices.
Aftermarket direct-fit catalytic converter
Chevy Impala owners opting for a non-OEM, direct-fit converter typically pay the lowest part price, with standard installation costs.
- Total cost (parts + labor): typically $300–$750
Note: prices vary with engine type, year, and local labor rates, and additional parts may be required in some cases.
OEM replacement (non-CA) with standard labor
Using an original equipment manufacturer part (not CARB-certified for California) generally costs more than aftermarket options but offers guaranteed fit and warranty support.
- Total cost (parts + labor): typically $600–$1,400
Regional differences and the exact engine/installation can push these figures higher or lower.
CARB-certified or California-specific replacement
In states with strict emissions rules, a CARB-approved catalytic converter is often required, raising both part and labor costs.
- Total cost (parts + labor): typically $800–$1,900
Passage of emissions tests and compliance with local regulations are important considerations in this scenario.
Two-cat configurations or complex access
Some Impala generations use two catalytic converters or present challenging access, which increases labor time and may require additional parts.
- Total cost (parts + labor): typically $1,000–$2,500 or more
These setups reflect higher complexity and longer service times in the shop.
Other considerations
Beyond the core parts and labor, a few practical notes can influence the final price.
- Time to complete: many replacements take 1–3 hours, depending on access and whether other repairs are done at the same time
- Warranty and reliability: OEM parts usually come with longer warranties; aftermarket parts may offer shorter terms
- State inspections: ensure the replacement complies with local emissions requirements to avoid rework
As always, getting multiple quotes and confirming the exact part and fit for your Impala will yield the most reliable estimate.
Ways to save money
Shoppers can often reduce the total bill by planning ahead and choosing cost-effective options without compromising emissions compliance.
- Shop around and obtain quotes from at least three independent shops and a dealer for price comparison
- Ask about both parts and labor separately to identify where you can cut costs
- Check if you can supply your own part (where allowed) to lower the part cost, while ensuring it meets emissions standards
- Consider combining the replacement with related service items (e.g., oxygen sensor checks or other exhaust repairs) to minimize multiple labor charges
- Verify that the chosen part is CARB-compliant if you live in California or another emissions-restricted state
With careful shopping and verification, you can secure a safe, compliant replacement at a fair price.
Summary
Replacing a catalytic converter on a Chevy Impala is a mid-to-high-cost repair with price variation driven by engine type, number of converters, part choice, and regional emissions rules. A broad, practical range is roughly $500 to $2,500, with California CARB-compliant OEM replacements and dual-cat setups skewing toward the higher end. Prospective buyers should obtain multiple quotes, confirm emissions compliance, and consider total costs (parts and labor) rather than focusing on a single price figure. A well-chosen replacement protects performance, fuel economy, and lawful operation on the road.
