What should I know about catalytic converters and their operation, maintenance, and potential issues on Lexus RX350?

Regarding catalytic converters, it's worth noting that due to a mandated extended warranty covering emissions-related components, it's advisable to consult a dealer service department before replacing the converter at your own cost. The catalytic converter, an emission control device in the exhaust system, reduces pollutants. There are two types: the oxidation catalyst, which reduces hydrocarbon (HC) and carbon monoxide (CO) levels by adding oxygen to the exhaust stream to produce water vapor (H2O) and carbon dioxide (CO2), and the reduction catalyst, which lowers oxides of nitrogen (NOx) levels by removing oxygen to produce nitrogen (N) and oxygen. The two types are combined into a three-way catalyst. Proper oxygen levels are vital for its operation, as it captures and stores oxygen most efficiently when converting exhaust gases mixed at the ideal air/fuel ratio of 14.7:1. Lean or rich air/fuel ratios can impact its function. The PCM monitors the catalyst's oxygen content via upstream and downstream oxygen sensors. If it's not working, the downstream sensor indicates elevated oxygen, prompting a Diagnostic Trouble Code (DTC) and the Malfunction Indicator Light (MIL) activation. Checking the converter requires specialized equipment, but you can check for restricted converters using a vacuum gauge to diagnose the effect of a blocked exhaust on intake vacuum. If damage is found, replacement is necessary. Upstream catalytic converters are integral to the exhaust manifold. Replacement procedures vary by model year and engine type. Always ensure the catalytic converter has cooled before servicing.

Genuine Lexus RX350 Catalytic Converter

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32 Catalytic Converters found

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Lexus RX350 Exhaust Manifold Converter Sub-Assembly, No.2
Part Number: 25052-20190
$626.72
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Sub-Assy, Exhaust Manifold, No.2; Exhaust Manifold, Manifold
- Manufacturer Note: *115=TOYOTA/03-/Y
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007 Lexus RX350 | STD | 6 Cyl 3.3L | 3MZFE; 3MZFE; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX350 Exhaust Manifold Converter Sub-Assembly
Part Number: 25051-20040
$658.80
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Sub-Assy, Exhaust Manifold; Exhaust Manifold, Manifold
- Manufacturer Note: *115=TOYOTA/03-/Y
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007 Lexus RX350 | STD | 6 Cyl 3.3L | 3MZFE; 3MZFE; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX350 Center Exhaust Pipe Assembly
Part Number: 17420-31500
$1149.71
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Center
- Manufacturer Note: *114=TOYOTA/X63/Y
- Position: Center
- Replaced by: 17420-0P290
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2011-2015 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFE; 2GRFE; GGL10L-AWTGKA, GGL15L-AWTGKA
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Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-0P180
$269.24 MSRP: $341.83
You Save: $72.59 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front; Front Pipe
- Position: Front
- Replaces: 17410-31660
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007-2009 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFE; 2GRFE; GSU30L-AWAGKA, 2GRFE; GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA
View related parts
Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-31850
$258.63 MSRP: $322.97
You Save: $64.34 (20%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front
- Position: Front
- Replaced by: 17410-0P230
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2010-2015 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFE; 2GRFE; GGL10L-AWTGKA, GGL15L-AWTGKA
View related parts
Lexus RX350 Center Exhaust Pipe Assembly
Part Number: 17420-0P290
$1149.71
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Center; Center Pipe
- Position: Center
- Replaces: 17420-31500
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2011-2015 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFE; 2GRFE; GGL10L-AWTGKA, 2GRFE; GGL10L-CWTGKA, GGL15L-AWTGKA, GGL15L-CWTGKA, GGL15L-CWZGKA
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Lexus RX350 CONVERTER ASSY, W/CA
Part Number: 17400-F0020
$2258.10
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Manufacturer Note: (L)
- Position: Passenger Side
- Replaces: 17400-25030
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; T24AFTS; TALA10L-AWZGTA, T24AFTS; TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-AWTGTA, TALH17L-CWTGTA
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Lexus RX350 CONVERTER ASSY, W/CA
Part Number: 17400-25050
$3914.80
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; T24AFTS; TALA10L-AWZGTA
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Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-31860
$277.32 MSRP: $352.08
You Save: $74.76 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front; Front Pipe
- Position: Front
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2010-2011 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFXE; 2GRFXE; GYL10L-AWXGKA, GYL15L-AWXGKA
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Lexus RX350 PIPE ASSY, EXHAUST
Part Number: 17410-25520
$496.04
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter & Pipe
- Position: Front
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; T24AFTS; TALA10L-AWZGTA, TALH17L-AWTGTA
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Lexus RX350 Exhaust Center Pipe Assembly
Part Number: 17420-31290
$4888.48
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Center
- Manufacturer Note: *114=TOYOTA/UB2/Y
- Position: Center
- Replaced by: 17420-31291
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2010-2014 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFXE; 2GRFXE; GYL10L-AWXGKA, GYL15L-AWXGKA
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Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-20450
$249.47 MSRP: $316.72
You Save: $67.25 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front; Front Pipe
- Position: Front
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007 Lexus RX350 | STD | 6 Cyl 3.3L | 3MZFE; 3MZFE; MCU33L-AWAGKA, MCU38L-AWAGKA
View related parts
Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-0P230
$254.39 MSRP: $322.97
You Save: $68.58 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front; Front Pipe
- Position: Front
- Replaces: 17410-31850
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2010-2015 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFE; 2GRFE; GGL10L-AWTGKA, 2GRFE; GGL10L-CWTGKA, GGL15L-AWTGKA, GGL15L-CWTGKA, GGL15L-CWZGKA
View related parts
Lexus RX350 CONVERTER ASSY, W/CA
Part Number: 17400-F0050
$1453.90
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; T24AFTS; TALA10L-CWZGTA, TALA15L-CWZGTA
View related parts
Lexus RX350 CONVERTER ASSY, W/CA
Part Number: 17400-25030
$2258.10
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter & Pipe
- Manufacturer Note: (J)
- Position: Passenger Side
- Replaced by: 17400-F0020
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; T24AFTS; TALA10L-AWZGTA, TALH17L-AWTGTA
View related parts
Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-0P500
$369.76 MSRP: $469.44
You Save: $99.68 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front; Front Pipe
- Position: Front
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2014-2015 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFE; 2GRFE; GGL10L-CWTGKA, GGL15L-CWTGKA, GGL15L-CWZGKA
View related parts
Lexus RX350 PIPE ASSY, EXHAUST
Part Number: 17410-F0500
$519.41
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter & Pipe
- Position: Front
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; T24AFTS; TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-CWTGTA
View related parts
Lexus RX350 PIPE ASSY, EXHAUST
Part Number: 17410-F0501
$519.41
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter & Pipe, Front Pipe
- Position: Front
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2023-2025 Lexus RX350 | 4 Cyl 2.4L | T24AFTS; T24AFTS; TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-CWTGTA
View related parts
Lexus RX350 Pipe Assy, Exhaust
Part Number: 17420-0P600
$1146.94
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Center Pipe
- Position: Center
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2020-2022 Lexus RX350 | 6 Cyl 3.5L | 2GRFKS; 2GRFKS; GGL25L-CWZGBA
View related parts
Lexus RX350 Pipe Assy, Exhaust
Part Number: 17420-31760
$1186.01
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Center Pipe
- Position: Center
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2020-2022 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFKS; 2GRFKS; GGL25L-BWZGBA

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1-20 of 32 Results

Lexus RX350 Catalytic Converter

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus RX350 Catalytic Converter available on LexusPartsNow.com. Our OEM Lexus RX350 Catalytic Converter come with the reassurance of the manufacturer's warranty, a hassle-free return policy, and speedy delivery service, all at affordable prices online. Feel free to shop with confidence!

Lexus RX350 Catalytic Converter Parts Questions & Experts Answers

Exhaust Manifold Converter Sub-Assembly
25051-20040
Q: What should I know about catalytic converters and their operation, maintenance, and potential issues on Lexus RX350?
A: Regarding catalytic converters, it's worth noting that due to a mandated extended warranty covering emissions-related components, it's advisable to consult a dealer service department before replacing the converter at your own cost. The catalytic converter, an emission control device in the exhaust system, reduces pollutants. There are two types: the oxidation catalyst, which reduces hydrocarbon (HC) and carbon monoxide (CO) levels by adding oxygen to the exhaust stream to produce water vapor (H2O) and carbon dioxide (CO2), and the reduction catalyst, which lowers oxides of nitrogen (NOx) levels by removing oxygen to produce nitrogen (N) and oxygen. The two types are combined into a three-way catalyst. Proper oxygen levels are vital for its operation, as it captures and stores oxygen most efficiently when converting exhaust gases mixed at the ideal air/fuel ratio of 14.7:1. Lean or rich air/fuel ratios can impact its function. The PCM monitors the catalyst's oxygen content via upstream and downstream Oxygen Sensors. If it's not working, the downstream sensor indicates elevated oxygen, prompting a Diagnostic Trouble Code (DTC) and the Malfunction Indicator Light (MIL) activation. Checking the converter requires specialized equipment, but you can check for restricted converters using a vacuum gauge to diagnose the effect of a blocked exhaust on intake vacuum. If damage is found, replacement is necessary. Upstream catalytic converters are integral to the exhaust manifold. Replacement procedures vary by model year and engine type. Always ensure the catalytic converter has cooled before servicing.

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