What is a catalytic converter and how does it function in the exhaust system on Acura TL?

A catalytic converter is an emission control device in the exhaust system that reduces certain pollutants in the exhaust gas stream, with two types, oxidation converters and reduction converters. Oxidation converters use a ceramic honeycomb substrate coated with platinum and palladium to reduce unburned hydrocarbons and carbon monoxide by adding oxygen to the exhaust stream, converting them to water vapor and carbon dioxide. Reduction converters, coated with platinum and rhodium, reduce oxides of nitrogen by removing oxygen, producing nitrogen and carbon dioxide. Three-way catalysts combine both types to reduce all three pollutants, and all models discussed are equipped with them. On 2003 and earlier models, the catalytic converter is located in the exhaust pipe behind the junction of the outlet pipes of the exhaust manifolds, while 2004 and later models feature two warm-up catalytic converters bolted directly to the cylinder heads without separate exhaust manifolds. Testing for a malfunctioning converter requires expensive equipment, so it is advisable to seek professional diagnosis and repair. When servicing underbody components, inspect the converter assembly for leaks, corrosion, and damage, and replace it if necessary. To check for a restricted converter, use a vacuum gauge connected to an intake manifold vacuum source, noting the readings at idle and after quickly opening and closing the throttle. If the fourth reading is significantly lower than the idle reading, the exhaust system may be restricted. For replacement, raise the vehicle securely on jackstands, disconnect the oxygen sensors, and remove the retaining nuts from the catalytic converter's mounting flanges. Installation is the reverse of removal, ensuring that any rusted or damaged fasteners are replaced and all fasteners are tightened securely. For 2004 and later models, the process involves removing the condenser fan/shroud assembly and the engine splash shield, disconnecting the oxygen sensors, and removing the nuts from the catalytic converter's mounting flanges before detaching it from the exhaust system. New gaskets and fasteners should be used during reinstallation, and all connections must be tightened securely. Additionally, these models have a third catalytic converter located under the vehicle, similar to the single converter used on earlier models.

Genuine Acura TL Catalytic Converter

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24 Catalytic Converters found

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Acura TL Exhaust Manifold
Part Number: 18290-RCA-L00
$786.98 MSRP: $1123.04
You Save: $336.06 (30%)
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Product Specifications
- Other Name: Converter, Rear Primary ; Catalytic Converter; Catalytic Converter, Manifold, Preconverter
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2004-2008 Acura TL
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Acura TL Exhaust Manifold
Part Number: 18190-RYE-A00
$957.11 MSRP: $1365.11
You Save: $408.00 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Front Primary Converter; Catalytic Converter, Converter, Manifold
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2007-2008 Acura TL
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Acura TL Exhaust Manifold
Part Number: 18290-R70-A02
$862.53 MSRP: $1230.93
You Save: $368.40 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Conv Complete, Rear Prim ; Catalytic Converter; Catalytic Converter
- Replaces: 18290-R70-A00
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2009-2011 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-RDB-A00
$702.11 MSRP: $975.16
You Save: $273.05 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Converter Complete; Converter
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2007-2008 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-RL8-A01
$947.31 MSRP: $1351.11
You Save: $403.80 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Complete; Converter
- Replaces: 18160-RL8-A00
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2010-2011 Acura TL
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Acura TL Exhaust Manifold
Part Number: 18190-RK1-A00
$760.52 MSRP: $1084.36
You Save: $323.84 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Front Primary Converter; Catalytic Converter
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2009 Acura TL
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Acura TL Exhaust Manifold
Part Number: 18190-RK2-A00
$1412.45 MSRP: $2015.42
You Save: $602.97 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Front Primary Converter; Catalytic Converter
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2009-2014 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-RK2-A00
$947.31 MSRP: $1351.12
You Save: $403.81 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Complete
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2009-2014 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-RCA-A00
$560.46 MSRP: $798.64
You Save: $238.18 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Complete; Converter
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2004 Acura TL
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Acura TL Exhaust Converter
Part Number: 18150-RV0-A00
$634.23 MSRP: $904.88
You Save: $270.65 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Complete; Catalytic Converter, Converter
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2012-2014 Acura TL
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Acura TL Front Primary Catalytic Converter
Part Number: 18190-R70-A20
$681.41 MSRP: $972.27
You Save: $290.86 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Exhaust Manifold
- Position: Front
- Replaces: 18190-R70-A11
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2012-2014 Acura TL
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Acura TL Converter, Rear Primary
Part Number: 18290-RK2-A00
$1398.64 MSRP: $1995.68
You Save: $597.04 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter; Exhaust Manifold
- Position: Rear
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2009-2014 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-RCA-S00
$969.51 MSRP: $1382.81
You Save: $413.30 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Converter Complete
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2004-2008 Acura TL
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Acura TL Converter, Rear Primary
Part Number: 18290-R70-A10
$669.59 MSRP: $955.38
You Save: $285.79 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter; Exhaust Manifold
- Position: Rear
- Replaces: 18290-R70-A01
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2012-2014 Acura TL
View related parts
Acura TL Front Primary Catalytic Converter
Part Number: 18190-R70-A10
$820.53 MSRP: $1170.04
You Save: $349.51 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Exhaust Manifold
- Position: Front
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2010-2011 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-R70-A00
$841.30 MSRP: $1199.71
You Save: $358.41 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Complete
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2009 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-PGE-A00
$2418.13 MSRP: $3448.98
You Save: $1030.85 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Complete
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2002-2003 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-P8C-305
$1042.88 MSRP: $1484.90
You Save: $442.02 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Complete
- Replaces: 18160-P8C-A00
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 1999 Acura TL
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Acura TL Exhaust Converter
Part Number: 18160-P8F-305
$1758.73 MSRP: $2507.25
You Save: $748.52 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Complete; Catalytic Converter
- Replaces: 18160-P8F-J00, 18160-P8C-L00, 18160-P8F-A00
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 1999-2003 Acura TL
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Acura TL Catalytic Converter
Part Number: 18160-P8E-L01
$2222.54 MSRP: $3169.64
You Save: $947.10 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Complete
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
Fits for 2000-2003 Acura TL

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Acura TL Catalytic Converter

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Acura TL Catalytic Converter Parts Questions & Experts Answers

Catalytic Converter
18160-RDB-A00
Q: What is a catalytic converter and how does it function in the exhaust system on Acura TL?
A: A catalytic converter is an emission control device in the exhaust system that reduces certain pollutants in the exhaust gas stream, with two types, oxidation converters and reduction converters. Oxidation converters use a ceramic honeycomb substrate coated with platinum and palladium to reduce unburned hydrocarbons and carbon monoxide by adding oxygen to the exhaust stream, converting them to water vapor and carbon dioxide. Reduction converters, coated with platinum and rhodium, reduce oxides of nitrogen by removing oxygen, producing nitrogen and carbon dioxide. Three-way catalysts combine both types to reduce all three pollutants, and all models discussed are equipped with them. On 2003 and earlier models, the catalytic converter is located in the exhaust pipe behind the junction of the outlet pipes of the exhaust manifolds, while 2004 and later models feature two warm-up catalytic converters bolted directly to the cylinder heads without separate exhaust manifolds. Testing for a malfunctioning converter requires expensive equipment, so it is advisable to seek professional diagnosis and repair. When servicing underbody components, inspect the converter assembly for leaks, corrosion, and damage, and replace it if necessary. To check for a restricted converter, use a vacuum gauge connected to an intake manifold vacuum source, noting the readings at idle and after quickly opening and closing the throttle. If the fourth reading is significantly lower than the idle reading, the exhaust system may be restricted. For replacement, raise the vehicle securely on jackstands, disconnect the Oxygen Sensors, and remove the retaining nuts from the catalytic converter's mounting flanges. Installation is the reverse of removal, ensuring that any rusted or damaged fasteners are replaced and all fasteners are tightened securely. For 2004 and later models, the process involves removing the condenser fan/shroud assembly and the engine splash shield, disconnecting the oxygen sensors, and removing the nuts from the catalytic converter's mounting flanges before detaching it from the exhaust system. New gaskets and fasteners should be used during reinstallation, and all connections must be tightened securely. Additionally, these models have a third catalytic converter located under the vehicle, similar to the single converter used on earlier models.