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2003 Lexus GS300 Catalytic Converter

Review Fitment Notes

We have 22 catalytic converter products to choose from for your 2003 Lexus GS300, and our low-cost options range from $105.98 up to $1,411.58

Showing 3 of 22 Results
Dorman Exhaust Manifold with Integrated Catalytic Converter 7538-05432739 Click to Enlarge
5 Stars
Dorman 674-642
Exhaust Manifold with Integrated Catalytic Converter
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Dorman Exhaust Manifold with Integrated Catalytic Converter
Part Number: 7538-05432739
Brand: Dorman
Notes: Catalytic Converter with Integrated Exhaust Manifold -- CARB Compliant: No
  • Designed to match the fit and performance of the original equipment
  • Includes gaskets and downpipe hardware to simplify installation
  • Made within strict tolerances for reliable longevity
Condition: New
Grade Type: Regular
Package Contents: Exhaust Manifold; 1 Input Gasket; 1 Output Flange
Color: Natural
Shipping Options: Ground
Lifetime Dorman Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$516.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 Lexus GS300 3.0L 6 Cyl
Dorman Exhaust Manifold with Integrated Catalytic Converter 7538-07488167 Click to Enlarge
3 Stars
Dorman 673-642
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Dorman Exhaust Manifold with Integrated Catalytic Converter
Part Number: 7538-07488167
Brand: Dorman
Notes: Catalytic Converter with Integrated Exhaust Manifold -- CARB Compliant: Yes
  • Designed to match the fit and performance of the original equipment
  • Includes gaskets and downpipe hardware to simplify installation
  • Made within strict tolerances for reliable longevity
Condition: New
Grade Type: Regular
Package Contents: Exhaust Manifold; 1 Input Gasket; 1 Output Flange
Color: Natural
Shipping Options: Ground
Lifetime Dorman Limited Warranty
*** Legal in California, Colorado, New York, and Maine ***
$1,049.98
(2) In Stock
This Part Fits:
Catalog: N
Vehicle Engine
2003 Lexus GS300 3.0L 6 Cyl
Dorman Exhaust Manifold with Integrated Catalytic Converter 7538-05470950 Click to Enlarge
3 Stars
Dorman 673-642
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Dorman Exhaust Manifold with Integrated Catalytic Converter
Part Number: 7538-05470950
Brand: Dorman
Notes: Catalytic Converter with Integrated Exhaust Manifold -- CARB Compliant: Yes
  • Designed to match the fit and performance of the original equipment
  • Includes gaskets and downpipe hardware to simplify installation
  • Made within strict tolerances for reliable longevity
Condition: New
Grade Type: Regular
Package Contents: Exhaust Manifold; 1 Input Gasket; 1 Output Flange
Color: Natural
Shipping Options: Ground
Lifetime Dorman Limited Warranty
*** Legal in California, Colorado, New York, and Maine ***
$923.43
Out of Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 Lexus GS300 3.0L 6 Cyl

Catalytic Converter Reviews - 2003 Lexus GS300

Bosal | 096-1640

The CAT works well, and for the price is difficult to beat.

However, the install was not a direct swap as the manifold flange that bolts to the head was too tight of a fit but was easily modified to work. Additionally, the bracket that comes off of the bottom of the transmission has to be cut or drilled out to make it work like it did with the OEM CATS.

And as far as aftermarket low cost CATs go, this was one of the better ones.

February 3rd, 2014 | Posted by Rocket