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

Cat. 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
$728.03 MSRP: $858.22
You Save: $130.19 (16%)
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; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX350 Exhaust Manifold Converter Sub-Assembly
Part Number: 25051-20040
$784.91 MSRP: $925.28
You Save: $140.37 (16%)
Ships in 1-3 Business Days
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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; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX350 Center Exhaust Pipe Assembly
Part Number: 17420-31500
$1149.71 MSRP: $1459.65
You Save: $309.94 (22%)
Ships in 1-3 Business Days
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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; GGL10L-AWTGKA, GGL15L-AWTGKA
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Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-0P180
$269.27 MSRP: $341.86
You Save: $72.59 (22%)
Ships in 1-3 Business Days
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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; GSU30L-AWAGKA, 2GRFE; GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA
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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
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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; GGL10L-AWTGKA, GGL15L-AWTGKA
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Lexus RX350 Center Exhaust Pipe Assembly
Part Number: 17420-0P290
$1149.71 MSRP: $1459.65
You Save: $309.94 (22%)
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; 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
$2427.47 MSRP: $3364.79
You Save: $937.32 (28%)
Ships in 1-2 Business Days
ADD TO CART
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; 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
$4208.51 MSRP: $5833.54
You Save: $1625.03 (28%)
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; TALA10L-AWZGTA
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Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-31860
$277.43 MSRP: $352.22
You Save: $74.79 (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; GYL10L-AWXGKA, GYL15L-AWXGKA
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Lexus RX350 Exhaust Pipe Assembly
Part Number: 17410-25520
$496.07 MSRP: $629.81
You Save: $133.74 (22%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: PIPE ASSY, EXHAUST; 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; TALA10L-AWZGTA, TALH17L-AWTGTA
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Lexus RX350 Exhaust Center Pipe Assembly
Part Number: 17420-31290
$4937.39 MSRP: $6268.43
You Save: $1331.04 (22%)
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; GYL10L-AWXGKA, GYL15L-AWXGKA
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Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-20450
$268.19 MSRP: $340.48
You Save: $72.29 (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; MCU33L-AWAGKA, MCU38L-AWAGKA
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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; GGL10L-AWTGKA, 2GRFE; GGL10L-CWTGKA, GGL15L-AWTGKA, GGL15L-CWTGKA, GGL15L-CWZGKA
View related parts
Lexus RX350 CONVERTER ASSY, W/CA
Part Number: 17400-F0050
$1562.99 MSRP: $2166.51
You Save: $603.52 (28%)
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; TALA10L-CWZGTA, TALA15L-CWZGTA
View related parts
Lexus RX350 CONVERTER ASSY, W/CA
Part Number: 17400-25030
$2427.47 MSRP: $3364.79
You Save: $937.32 (28%)
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; TALA10L-AWZGTA, TALH17L-AWTGTA
View related parts
Lexus RX350 Front Exhaust Pipe Assembly
Part Number: 17410-0P500
$369.83 MSRP: $469.52
You Save: $99.69 (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; GGL10L-CWTGKA, GGL15L-CWTGKA, GGL15L-CWZGKA
View related parts
Lexus RX350 Exhaust Pipe Assembly
Part Number: 17410-F0500
$519.47 MSRP: $659.51
You Save: $140.04 (22%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: PIPE ASSY, EXHAUST; 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; TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-CWTGTA
View related parts
Lexus RX350 Exhaust Pipe Assembly
Part Number: 17410-F0501
$519.47 MSRP: $659.51
You Save: $140.04 (22%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: PIPE ASSY, EXHAUST; 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; TALA10L-CWZGTA, TALA15L-CWZGTA, TALH17L-CWTGTA
View related parts
Lexus RX350 Exhaust Pipe Assembly
Part Number: 17420-0P600
$1232.99 MSRP: $1565.38
You Save: $332.39 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust; 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; GGL25L-CWZGBA
View related parts
Lexus RX350 Exhaust Pipe Assembly
Part Number: 17420-31760
$1274.99 MSRP: $1618.71
You Save: $343.72 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust; 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; GGL25L-BWZGBA

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1-20 of 32 Results

Lexus RX350 Catalytic Converter

Lexus RX350 Catalytic Converter turns harmful exhaust into safe water, nitrogen, and carbon dioxide by sending fumes through a platinum, palladium, and rhodium coated honeycomb that triggers oxidation of carbon monoxide and hydrocarbons and reduction of nitrogen oxides. The device sits in the exhaust stream, and when the engine has a balanced air fuel mix, the intense heat and huge surface area of the device allow the reaction to complete in a short amount of time, keeping the SUV clean, legal, and lively. Early RX350 models already featured the three-way Catalytic Converter with a ceramic monolith, which replaced older bead style converters that restricted the flow more and cracked easier, so current Lexus drivers gain better performance and durability. This helps keep Lexus emissions well below limits and also helps the RX350 avoid failed smog tests. Overheating from misfires or substrate coating from burning oil or coolant can melt or clog the Catalytic Converter, which will cause rattles, backpressure, loss of power, and a glowing dash light. Modern Lexus design puts the Catalytic Converter under the floorpan, but debris strikes are a danger nonetheless, and healthy engine function is necessary to safeguard this important RX350 component. Regular checks on the Catalytic Converter ensure both performance and emissions.

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.

Related Lexus RX350 Parts

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