Discount Auto Parts and Accessories Auto Parts Since 2008
Call To Order: 1-800-541-9352

2004 Lexus GS300 Catalytic Converter

Review Fitment Notes

We have 19 catalytic converter products to choose from for your 2004 Lexus GS300, and our low-cost options range from $123.98 up to $1,411.58

Showing 19 of 19 Results
Eastern Catalytic Catalytic Converter - Rear 17939-05171284 Click to Enlarge
4.9 Stars
Eastern Catalytic 83166
Catalytic Converter
Loading Reviews...
Eastern Catalytic Catalytic Converter - Rear
Part Number: 17939-05171284
Brand: Eastern Catalytic
Notes: UNIVERSAL -- Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Semi-Universal Converter - ECO II
Position: Rear
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$153.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Eastern Catalytic Catalytic Converter - Rear 17939-05171283 Click to Enlarge
4.8 Stars
Eastern Catalytic 83165
Catalytic Converter
Loading Reviews...
Eastern Catalytic Catalytic Converter - Rear
Part Number: 17939-05171283
Brand: Eastern Catalytic
Notes: UNIVERSAL -- Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Semi-Universal Converter - ECO II
Position: Rear
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$153.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Catco Catalytic Converter - Rear 17939-07326311 Click to Enlarge
3 Stars
Catco 4440
Catalytic Converter
Loading Reviews...
Catco Catalytic Converter - Rear
Part Number: 17939-07326311
Brand: Catco
Notes: Catalytic Converter -- Direct Fit; With 42" Converter; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
Position: Rear
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$266.98
(3) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Magnaflow Catalytic Converter - Rear 17939-05639989 Click to Enlarge
Website Reviews
Loading Reviews...
Magnaflow Catalytic Converter - Rear
Part Number: 17939-05639989
Brand: Magnaflow
Notes: 2.50in. Universal California OBDII Catalytic Converter -- Certification Level : LEV1 LEV; OE Spec; Cutting and Welding Required During Installation; CARB Executive Order D-193-124; Engine Family Number 4TYXV03.0VMD
Position: Rear
Condition: New
Body Material: Stainless Steel
Material: Stainless Steel
Series: California
Heat Shield Included: Yes
Shipping Options: Ground
*** Legal in California, Colorado, New York, and Maine ***
$313.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Magnaflow Catalytic Converter 17939-03847617 Click to Enlarge
5 Stars
Magnaflow 99006HM
Catalytic Converter
Loading Reviews...
Magnaflow Catalytic Converter
Part Number: 17939-03847617
Brand: Magnaflow
Notes: Universal HM Grade Federal (Exc. CA) -- Cutting and Welding Required During Installation
Condition: New
Material: Stainless Steel
Body Material: Stainless Steel
Universal Or Specific Fit: Universal
Series: HM Grade
Heat Shield Included: Yes
Shipping Options: Free Ground Shipping
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$233.00
with FREE Shipping
(69) In Stock
This Part Fits:
Catalog: F
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Magnaflow Catalytic Converter 17939-03328119 Click to Enlarge
Website Reviews
Loading Reviews...
Magnaflow Catalytic Converter
Part Number: 17939-03328119
Brand: Magnaflow
Notes: Universal OEM GRADE Federal (Exc.CA) -- Cutting and Welding Required During Installation
Condition: New
Series: OEM Grade
Body Material: Stainless Steel
Material: Stainless Steel
Heat Shield Included: Yes
Shipping Options: Free Ground Shipping
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$241.00
with FREE Shipping
(20) In Stock
This Part Fits:
Catalog: F
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Bosal Catalytic Converter - Rear 17939-05954547 Click to Enlarge
Website Reviews
Loading Reviews...
Bosal Catalytic Converter - Rear
Part Number: 17939-05954547
Brand: Bosal
Notes: BRExhaust CARB Direct-Fit OBDII Catalytic Converter -- Certification Level : LEV1 LEV; CARB Executive Order D-193-124; Engine Family Number 4TYXV03.0VMD
Position: Rear
Condition: New
Material: Stainless Steel
Type: Direct-Fit
Type: California / CARB Compliant
Finish: Stainless Steel
Body Material: Stainless Steel
Mounting Hardware Included: Yes
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$605.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Bosal Catalytic Converter - Front W0133-1924452 Click to Enlarge
Website Reviews
Loading Reviews...
Bosal Catalytic Converter - Front
Part Number: W0133-1924452
Brand: Bosal
Notes: EPA Compliant - (48-State & Canada) EPA Tier 0 & Tier 1 emission use.
Detailed Notes: Not legal for sale or use in California and New York
Product Remark: - w/Manifold
  • Full Machined Flanges
  • OE Fittings for Easy Installation
  • Silent Flex Tubes
  • Stainless Steel Quality Assembly
  • Assured Fit
Position: Front
Condition: New
Shipping Options: Ground Shipping
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
List Price:
$1,047.37
Our Price: $943.58
(5) In Stock
This Part Fits:
Catalog: A
Vehicle
2004 Lexus GS300
Walker Catalytic Converter - Rear 17939-05214442 Click to Enlarge
Website Reviews
Loading Reviews...
Walker Catalytic Converter - Rear
Part Number: 17939-05214442
Brand: Walker
Notes: EPA -- Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Ultra Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • EPA COMPLIANT -- For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA & CO. Legal in NY & ME on EPA Federal Emission Equipped Vehicles only. Consult your state's aftermarket converter regulations for details.
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES -- OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • DURABLE -- Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • OE-STYLE DESIGN -- Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE -- Backed by Walker's 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
Position: Rear
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: No
Substrate Material: Ceramic
Air Tube: No
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$162.43
(6) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
DEC Catalytic Converter - Rear W0133-1903205 Click to Enlarge
Website Reviews
Loading Reviews...
DEC Catalytic Converter - Rear
Part Number: W0133-1903205
Brand: DEC
Notes: 46" Overall length C.A.R.B Compliant - California/New York Engine Family Number 4TYXV03.0VMD - Tier: LEV
Detailed Notes: C.A.R.B Certified and legal for sale and use in California and New York
  • Full Machined Flanges
  • OE Fittings for Easy Installation
  • Silent Flex Tubes
  • Stainless Steel Quality Assembly
  • Assured Fit
Position: Rear
Condition: New
Shipping Options: Ground Shipping
5 Year / 50,000 Mile DEC Limited Warranty
*** Legal in California, Colorado, New York, and Maine ***
List Price:
$886.40
Our Price: $682.58
(4) In Stock
This Part Fits:
Catalog: A
Vehicle
2004 Lexus GS300
DEC Catalytic Converter - Front W0133-2077998 Click to Enlarge
Website Reviews
Loading Reviews...
DEC Catalytic Converter - Front
Part Number: W0133-2077998
Brand: DEC
Notes: C.A.R.B Compliant - California/New York Engine Family Number 4TYXV03.0VMD - Tier: LEV1 LEV
Detailed Notes: C.A.R.B Certified and legal for sale and use in California and New York
Product Remark: - w/Manifold
  • Full Machined Flanges
  • OE Fittings for Easy Installation
  • Silent Flex Tubes
  • Stainless Steel Quality Assembly
  • Assured Fit
Position: Front
Condition: New
Shipping Options: Free Ground Shipping or (Overnight and 2-Day Shipping)
5 Year / 50,000 Mile DEC Limited Warranty
*** Legal in California, Colorado, New York, and Maine ***
List Price:
$1,613.19
Our Price: $1,411.58
with FREE Shipping
(6) In Stock
This Part Fits:
Catalog: A
Vehicle
2004 Lexus GS300
AP Exhaust Catalytic Converter - Rear 17939-05938121 Click to Enlarge
Website Reviews
Loading Reviews...
AP Exhaust Catalytic Converter - Rear
Part Number: 17939-05938121
Brand: AP Exhaust
Notes: Catalytic Converter -- Direct Fit; (With 42" Overall Length Converter); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
Position: Rear
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$396.43
(2) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Davico Catalytic Converter - Front 17939-05687300 Click to Enlarge
Website Reviews
Loading Reviews...
Davico Catalytic Converter - Front
Part Number: 17939-05687300
Brand: Davico
Notes: Exact-Fit Catalytic Converter - Manifold -- Not legal for use in California; Illegal for installation in NY on vehicles equipped with California emission systems; Manifold Converter
Position: Front
Condition: New
Gaskets Included: No
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$575.43
(7) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Eastern Catalytic Exhaust Manifold with Integrated Catalytic Converter - Front 17939-05456586 Click to Enlarge
5 Stars
Eastern Catalytic 40486
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Eastern Catalytic Exhaust Manifold with Integrated Catalytic Converter - Front
Part Number: 17939-05456586
Brand: Eastern Catalytic
Notes: DIRECT FIT -- Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Direct-fit Manifold Converter Assembly
Position: Front
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$845.43
(4) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Catco Exhaust Manifold with Integrated Catalytic Converter 17939-07379851 Click to Enlarge
5 Stars
Catco 4276
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Catco Exhaust Manifold with Integrated Catalytic Converter
Part Number: 17939-07379851
Brand: Catco
Notes: Catalytic Converter with Integrated Exhaust Manifold -- Direct Fit; Manifold Unit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$503.98
(4) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Magnaflow Exhaust Manifold with Integrated Catalytic Converter - Front 17939-03389403 Click to Enlarge
Website Reviews
Loading Reviews...
Magnaflow Exhaust Manifold with Integrated Catalytic Converter - Front
Part Number: 17939-03389403
Brand: Magnaflow
Notes: Exhaust Manifold with Integrated Catalytic Converter CALIFORNIA CONVERTERS -- Certification Level : LEV1 LEV; CARB Executive Order D-193-124; Engine Family Number 4TYXV03.0VMD
Position: Front
Condition: New
Series: California
Body Material: Stainless Steel
Material: Stainless Steel
Shipping Options: Free Ground Shipping
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$1,391.00
with FREE Shipping
(2) In Stock
This Part Fits:
Catalog: F
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Bosal Exhaust Manifold with Integrated Catalytic Converter 17939-05378810 Click to Enlarge
4.5 Stars
Bosal 096-1640
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Bosal Exhaust Manifold with Integrated Catalytic Converter
Part Number: 17939-05378810
Brand: Bosal
Notes: BRExhaust Federal Direct-Fit Premium Load OBDII Exhaust Manifold with Integrated Catalytic Converter
Condition: New
Body Material: Stainless Steel
Mounting Hardware Included: Yes
Material: Stainless Steel
Type: Federal / EPA Compliant
Type: Direct-Fit
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$875.43
(7) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Walker Exhaust Manifold with Integrated Catalytic Converter 17939-05305477 Click to Enlarge
Website Reviews
Loading Reviews...
Walker Exhaust Manifold with Integrated Catalytic Converter
Part Number: 17939-05305477
Brand: Walker
Notes: EPA -- Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Type
  • EPA COMPLIANT -- For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA & CO. Legal in NY & ME on EPA Federal Emission Equipped Vehicles only. Consult your state's aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN -- Bolt-off, bolt-on OE-style converter with integrated manifold assemblies that attach directly to engine cylinder head and match all downstream connections
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES -- OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE -- Features thick OE-style flanges and manifolds for strength and durability
  • OE-STYLE DESIGN -- Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE -- Backed by Walker's 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
Condition: New
California Air Resources Board (CARB) Certified: No
Converter Body Material: Stainless Steel
California Air Resource Board (CARB) Certified: No
Substrate Material: Ceramic
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$728.43
(7) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl
Dorman Exhaust Manifold with Integrated Catalytic Converter 17939-05470950 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: 17939-05470950
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
Color: Natural
Grade Type: Regular
Package Contents: Exhaust Manifold; 1 Input Gasket; 1 Output Flange
Shipping Options: Ground
Lifetime Dorman Limited Warranty
*** Legal in California, Colorado, New York, and Maine ***
$895.43
(4) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus GS300 3.0L 6 Cyl

Catalytic Converter Reviews - 2004 Lexus GS300

Bosal | 096-1640

Staff was super helpful. New catalytic converter was easy to install at a fraction of the dealer cost...Super satisfied...No more check engine light...Hooray!

February 12th, 2014 | Posted by Super Happy