How many catalytic converters does a 2008 Lexus ES350 have?
Two catalytic converters.
In the 2008 ES350, powered by the 3.5-liter V6 (2GR-FE), the exhaust system is designed with a pair of catalytic converters—one on each bank of the engine. This twin-cat arrangement helps meet emissions standards and is typically paired with four oxygen sensors (two upstream and two downstream) to monitor performance.
Engine and exhaust layout
The 2GR-FE V6 drives a twin-exhaust path, with a catalytic converter on each bank before the exhaust streams join. This is a common setup for Lexus sedans of this era and supports efficient emission control.
Two-cat, four-O2 sensor configuration
A typical ES350 setup includes two catalytic converters and four O2 sensors (two upstream before the cats and two downstream after the cats). This arrangement ensures accurate measurement of exhaust gas before and after catalytic treatment.
Configuration details:
- Two catalytic converters (one on each exhaust bank)
- Four oxygen sensors (two upstream, two downstream)
- Exhaust flow continues to a resonator and rear muffler after the cats
Concluding paragraph: This dual-cat configuration is standard for the 2008 ES350 and supports compliance with emissions regulations across regions.
Summary
The 2008 Lexus ES350 uses two catalytic converters—one for each bank of its V6 engine—typically paired with four O2 sensors to monitor performance and meet emissions standards.
How much does it cost to replace a catalytic converter on a 2008 Lexus ES350?
The average cost for a Lexus ES350 Catalytic Converter Replacement is between $1,936 and $1,994. Labor costs are estimated between $123 and $181 while parts are typically priced around $1,813.
What is the common problem in Lexus ES 350?
Common problems reported for the Lexus ES 350 include oil leaks, issues with the infotainment and navigation systems, a melting dashboard, and potential engine problems like blown cylinder head gaskets, especially in certain model years. Owners have also noted problems with brakes, window or sunroof malfunctions, and steering issues.
Engine and mechanical issues
- Oil leaks: Leaks from the engine area, often due to faulty gaskets or seals, are frequently reported.
- Engine problems: Issues such as blown cylinder head gaskets (particularly in 2007-2009 models), ticking or knocking sounds, and general engine problems can occur.
- Brakes: Some owners report premature wear on brake pads and rotors, as well as vibration or pulsation during braking.
- Steering: Problems with the steering system have also been cited.
- Transmission: Major transmission issues have been reported in some cases.
Electrical and infotainment problems
- Melting dashboard: This is a well-known issue on some models, where the dashboard material degrades and melts.
- Infotainment and navigation: Common complaints include issues with the infotainment system, GPS failures, and software problems.
- Windows and sunroofs: Some owners have reported that windows or the sunroof can open on their own.
- Airbags: There have been recalls for airbag issues, such as the passenger front airbag not deploying as needed.
Other issues
- Intended acceleration: Some drivers have experienced unintended acceleration.
- Wind noise: Intrusive wind noise, particularly at highway speeds, is noted by some owners of newer models.
Does a Lexus ES 350 have a catalytic converter?
MagnaFlow offers industry leading Lexus ES350 Catalytic Converter replacements that will keep your ES350 running efficient and meet your local emissions compliance.
What are two symptoms of a failed catalytic converter?
Check for symptoms.
As mentioned, common symptoms of a clogged catalytic converter include an illuminated check engine light, trouble starting the car, poor acceleration, a smell of sulfur or rotten eggs, engine misfires, and poor fuel economy.
