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Lexus IS300 Exhaust Manifold Reviews
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Shop Lexus IS300 Replacement Exhaust Manifold

Search our online exhaust manifold catalog and find the lowest priced discount auto parts on the web. We sell wholesale to the public. We offer high quality new, OEM, aftermarket and remanufactured Lexus IS300 Exhaust Manifold parts. We specialize in a wide-variety of high-quality car parts and accessories for your car, truck or SUV. Call toll free to order or place your order online via our secure checkout system. Our online parts catalog uses real-time inventory, so you can be assured the parts you buy are in stock at the time of ordering. Most orders are shipped the same day.

We stock these Exhaust Manifold brands for the Lexus IS300: BosalDormanEastern CatalyticCatcoWalkerOP

Exhaust Manifolds available for the following Lexus IS300 years: 2017, 2016, 2005, 2004, 2003, 2002, 2001, 17, 16, 05, 04, 03, 02, 01. This part is also sometimes called Lexus IS300 Exhaust Manifolds. We stock exhaust manifold parts for most Lexus models including GS300, GX470, ES300, RX330, IS250, GS350, ES330, RX300, LX470, RX350, LX450, ES350, RX400h, IS350, RX450h and SC300.

Select your IS300 year

Review Fitment Notes
Showing 15 of 90 Results
Bosal Exhaust Manifold with Integrated Catalytic Converter - for 2001 Lexus IS300 3.0L 6 Cyl - 096-1640 Click to Enlarge
4.5 Stars
Bosal 096-1640
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 096-1640
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
Series: Premium Load
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
(4) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 Lexus IS300 3.0L 6 Cyl
Bosal Exhaust Manifold with Integrated Catalytic Converter - for 2002 Lexus IS300 3.0L 6 Cyl - 096-1640 Click to Enlarge
4.5 Stars
Bosal 096-1640
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 096-1640
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
Series: Premium Load
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
(4) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 Lexus IS300 3.0L 6 Cyl
Dorman Exhaust Manifold with Integrated Catalytic Converter - for 2002 Lexus IS300 3.0L 6 Cyl - 673-642 Click to Enlarge
3 Stars
Dorman 673-642
Exhaust Manifold with Integrated Catalytic Converter
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Part Number: 673-642
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
Package Contents: Exhaust Manifold; 1 Input Gasket; 1 Output Flange
Grade Type: Regular
Color: Natural
Shipping Options: Ground
Lifetime Dorman Limited Warranty
*** Legal in California, Colorado, New York, and Maine ***
$966.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2002 Lexus IS300 3.0L 6 Cyl
Front Eastern Catalytic Exhaust Manifold with Integrated Catalytic Converter - for 2002 Lexus IS300 3.0L 6 Cyl - 40486 Click to Enlarge
5 Stars
Eastern Catalytic 40486
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 40486
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}
$657.43
(7) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 Lexus IS300 3.0L 6 Cyl
Dorman Exhaust Manifold with Integrated Catalytic Converter - for 2002 Lexus IS300 3.0L 6 Cyl - 674-642 Click to Enlarge
5 Stars
Dorman 674-642
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 674-642
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
Package Contents: Exhaust Manifold; 1 Input Gasket; 1 Output Flange
Color: Natural
Grade Type: Regular
Shipping Options: Ground
Lifetime Dorman Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$603.43
(2) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 Lexus IS300 3.0L 6 Cyl
Catco Exhaust Manifold with Integrated Catalytic Converter - for 2002 Lexus IS300 3.0L 6 Cyl - 4276 Click to Enlarge
5 Stars
Catco 4276
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 4276
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}
$499.98
(10) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
2002 Lexus IS300 3.0L 6 Cyl
Dorman Exhaust Manifold with Integrated Catalytic Converter - for 2001 Lexus IS300 3.0L 6 Cyl - 673-642 Click to Enlarge
3 Stars
Dorman 673-642
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 673-642
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
Package Contents: Exhaust Manifold; 1 Input Gasket; 1 Output Flange
Grade Type: Regular
Color: Natural
Shipping Options: Ground
Lifetime Dorman Limited Warranty
*** Legal in California, Colorado, New York, and Maine ***
$966.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2001 Lexus IS300 3.0L 6 Cyl
Front Eastern Catalytic Exhaust Manifold with Integrated Catalytic Converter - for 2001 Lexus IS300 3.0L 6 Cyl - 40486 Click to Enlarge
5 Stars
Eastern Catalytic 40486
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 40486
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}
$657.43
(7) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 Lexus IS300 3.0L 6 Cyl
Bosal Exhaust Manifold with Integrated Catalytic Converter - for 2004 Lexus IS300 3.0L 6 Cyl - 096-1640 Click to Enlarge
4.5 Stars
Bosal 096-1640
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 096-1640
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
Series: Premium Load
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
(4) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Lexus IS300 3.0L 6 Cyl
Catco Exhaust Manifold with Integrated Catalytic Converter - for 2001 Lexus IS300 3.0L 6 Cyl - 4276 Click to Enlarge
5 Stars
Catco 4276
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 4276
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}
$499.98
(10) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
2001 Lexus IS300 3.0L 6 Cyl
Walker Exhaust Manifold with Integrated Catalytic Converter - for 2002 Lexus IS300 3.0L 6 Cyl - 16354 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 16354
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
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}
$553.43
(14) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 Lexus IS300 3.0L 6 Cyl
Dorman Exhaust Manifold with Integrated Catalytic Converter - for 2001 Lexus IS300 3.0L 6 Cyl - 674-642 Click to Enlarge
5 Stars
Dorman 674-642
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 674-642
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
Package Contents: Exhaust Manifold; 1 Input Gasket; 1 Output Flange
Color: Natural
Grade Type: Regular
Shipping Options: Ground
Lifetime Dorman Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$603.43
(2) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 Lexus IS300 3.0L 6 Cyl
Front OP Exhaust Manifold with Integrated Catalytic Converter - for 2002 Lexus IS300 - OPCT1034 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: OPCT1034
Brand: OP
Notes: Catalytic Converter with Integrated Exhaust Manifold -- Not for sale or use in the states of CA/NY/ME if vehicle is equipped with CA emissions (CARB Std.)
Position: Front
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$447.43
(5) In Stock
This Part Fits:
Catalog: B
Vehicle
2002 Lexus IS300
Catco Exhaust Manifold with Integrated Catalytic Converter - for 2003 Lexus IS300 3.0L 6 Cyl - 4276 Click to Enlarge
5 Stars
Catco 4276
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 4276
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}
$499.98
(10) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
2003 Lexus IS300 3.0L 6 Cyl
Front Eastern Catalytic Exhaust Manifold with Integrated Catalytic Converter - for 2003 Lexus IS300 3.0L 6 Cyl - 40486 Click to Enlarge
5 Stars
Eastern Catalytic 40486
Exhaust Manifold with Integrated Catalytic Converter
Loading Reviews...
Part Number: 40486
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}
$657.43
(7) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 Lexus IS300 3.0L 6 Cyl

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Lexus IS300 Exhaust Manifold Reviews
5 of 5
Verified Customer
8/9/16 06:59 PM - USA

I made the mistake of trying to replace just one Cat after it went bad! Ended up buying the complete Manifold w/Cats. Great price compared to dealer prices! Shipping was only a few days. Satisfied! - Manifold with integrated Cats

- 2004 Lexus IS300 Exhaust Manifold with Integrated Catalytic Converter
3 of 5
Verified Customer
3/6/17 09:48 PM - USA

Product worked as expected. Quick delivery. Very consistent. Prices should be lower. - Catalytic Converter

- 2002 Lexus IS300 Exhaust Manifold with Integrated Catalytic Converter
5 of 5
Verified Customer
5/20/21 10:34 AM - USA

The catalytic converter is very good. I am happy to shop at geek. - Parts geek

- 2002 Lexus IS300 Exhaust Manifold with Integrated Catalytic Converter