Smog & Emissions
Catalytic Converter Replacement in Murrieta
CARB-legal converters installed and smog-certified in one stop.
A converter is the most expensive emissions part on your car, so we test before we replace: catalyst efficiency, upstream and downstream sensor data, and back pressure. Sometimes the converter is fine and the real fault is a misfire or rich condition killing it.
When it does need replacing, we install a CARB-compliant unit with the correct EO number so the car can legally pass in California — then we certify it here.
What's included
Catalytic Converter Replacement at our Murrieta shop
- Catalyst efficiency and back-pressure testing first
- CARB-compliant converters with valid EO numbers
- Upstream and downstream O2 sensor service
- Root-cause repair so the new converter survives
- Smog certification after the install
Where to find us
Murrieta Smog Star — 26500 Jefferson Ave, Unit D, Murrieta, CA 92562. Serving Murrieta, Temecula, Wildomar, Menifee and Lake Elsinore.
Questions
Straight answers
Can I use a cheap online converter?
Not in California. It must be CARB-compliant with an EO number or the car fails the visual inspection.
Why did my converter fail?
Usually a long-running misfire, oil burning or rich fuel condition. We fix the cause too.
Do you warranty the part?
Yes — converters carry the manufacturer's California emissions warranty.
Related services
Smog Check Murrieta
Walk-in smog checks at a licensed STAR station on Jefferson Ave.
ViewSTAR Certified Smog Station
A licensed STAR station — we can certify the cars test-only shops cannot.
ViewSTAR Smog Test Murrieta
State-directed STAR testing done right the first time.
ViewSmog Check Near Me
Minutes from I-15 on Jefferson Ave, serving Murrieta, Temecula, Wildomar and Menifee.
ViewFailed Smog Repair
We read your failure report, find the real cause, and retest free.
ViewGross Polluter Repair
STAR station certified to test and repair gross polluter vehicles.
ViewFree estimates · Free retest after qualifying smog repairs
Get a straight answer on your vehicle.
Tell us what it's doing. We'll tell you what it takes — in writing, before any work starts.