What are the important facts owners should be aware of to ensure the proper functioning of a catalytic converter throughout its service life on Audi A3?

The catalytic converter is a durable and very easy tool and needs no maintenance yet the owners should take note of few facts that they should observe to have proper operations of this device during the life of its use. One should also never use leaded or lead-replacement petrol because lead and other additives may coat the precious metals reducing their efficiency and eventually destroying the converter. It is important to maintain the ignition and fuel systems in an efficient state as per the schedule of the manufacturer. In case of misfiring of the engine, there should be limited driving until it is corrected. Pushing or towing of the car may wet the catalytic converter with unburnt fuel and therefore may cause overheating when the engine is started. One should not switch off the ignition when the engine speed is high and must not use fuel or engine oil additives that can damage the converter. It is not recommended to keep on driving the car and keep burning oil to the point where blue smoke can be seen. The catalytic converter has its very high temperatures and therefore, after a long running period, one should not park the car in dry undergrowth, long grass or stacked leaves. Also, converter is delicate and should not be hit with tools when servicing it, and one must be keen when handling it. Sulphurous odor Sometimes a smell of rotten eggs may be detected at the exhaust, but this is due not to the converter but to the sulfur in the fuel. With a properly driven and well-maintained car, the lifespan of the catalytic converter should take up to 50,000100,000 miles, and once it stops working, it has to be changed.

Is the catalytic converter fitted to diesel models simpler than that fitted to petrol models, and what are the important facts owners should know for optimal performance on Audi A3?

The catalytic converter that is installed on the diesel models is more basic than the catalytic converter installed on the petrol models, although it has to be handled with care to prevent complications. It is a maintenance free and reliable machine, but there are some important things that its owners must know in order to get the best out of the service life of this machine. No fuel or engine oil additives should be employed because they might have toxic contents. In case the engine burns oil to the extent of generating blue smoke, then the car cannot be driven. Catalytic converter is delicate and thus it is not to be hit with an instrument in the course of servicing and care should be taken when removing it in the vehicle. With a properly maintained and properly driven car, the catalyst converter would last between 50,000 to 100,000 miles and its lifetime will need to be replenished.

Genuine Audi A3 Catalytic Converter

Cat. Converter

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16 Catalytic Converters found

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Audi A3 Catalytic Converter Part Number: 1K0-254-401-R
$141.53 MSRP: $169.90
You Save: $28.37 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Catalyst; Catalytic Converter
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2010-2013 Audi A3 | TDI | 4 Cyl 2.0 L DIESEL
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Audi A3 Catalytic Converter Part Number: 5Q0-254-300-P
$571.13 MSRP: $685.63
You Save: $114.50 (17%)
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Product Specifications
- Other Name: Catalyst; Converter & Pipe, Exhaust Pipe
- Replaces: 5Q0-254-300-J
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2015-2016 Audi A3 | TDI Premium, TDI Premium Plus, TDI Prestige | 4 Cyl 2.0 L DIESEL
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Audi A3 Catalytic Converter Part Number: 1K0-254-512-NX
$2104.11 MSRP: $2525.95
You Save: $421.84 (17%)
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Product Specifications
- Other Name: Catalyst
- Replaces: 1K0-254-511-BX, 1K0-254-509-BX
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2009-2013 Audi A3 | Base, TDI | 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS
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Audi A3 Catalytic Converter Part Number: 5WA-254-501-A
$3024.97 MSRP: $3631.39
You Save: $606.42 (17%)
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Product Specifications
- Other Name: Catalyst; Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2022-2024 Audi A3 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi A3 Catalytic Converter Part Number: 1K0-254-513-BX
$2549.98 MSRP: $3043.55
You Save: $493.57 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Catalyst; Catalytic Converter
- Replaces: 1K0-254-511-CX, 1K0-254-512-MX
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2009-2013 Audi A3 | Base | 4 Cyl 2.0 L GAS
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Audi A3 Converter & Pipe Part Number: 5Q0-254-505-KX
$1194.76 MSRP: $1429.24
You Save: $234.48 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Converter & Pipe
- Replaces: 5Q0-254-501-PX
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2017-2020 Audi A3 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
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Audi A3 Catalytic Converter Part Number: 5Q0-254-502-MX
$2564.47 MSRP: $3060.95
You Save: $496.48 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Catalytic Converter
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2017-2020 Audi A3 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
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Audi A3 Catalytic Converter Part Number: 5Q0-254-501-NX
$2731.82 MSRP: $3261.85
You Save: $530.03 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Catalytic Converter
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2015-2016 Audi A3 | Premium, Premium Plus, Prestige | 4 Cyl 1.8 L GAS
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Audi A3 Converter & Pipe Part Number: 5Q0-254-501-DX
$3263.63 MSRP: $3900.27
You Save: $636.64 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2017-2020 Audi A3 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
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Audi A3 Catalytic Converter Part Number: 1K0-254-512-PX
$2395.81 MSRP: $2858.48
You Save: $462.67 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Catalytic Converter
- Replaces: 1K0-254-508-QX, 1K0-254-511-DX
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2009-2013 Audi A3 | Base, TDI | 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS
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Audi A3 Catalytic Converter Part Number: 5Q0-254-505-K
$3082.73 MSRP: $3700.77
You Save: $618.04 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2017-2020 Audi A3 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
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Audi A3 Catalytic Converter Part Number: 1K0-254-402-AX
$3149.99 MSRP: $3763.86
You Save: $613.87 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Catalytic Converter
- Replaces: 1K0-254-401-T
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2010-2013 Audi A3 | TDI | 4 Cyl 2.0 L DIESEL
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Audi A3 Converter & Pipe Part Number: 5WA-254-501-AX
$1440.18 MSRP: $1711.26
You Save: $271.08 (16%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Converter & Pipe
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2022-2024 Audi A3 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi A3 Catalytic Converter Part Number: 5WA-254-500-R
$1969.25 MSRP: $2364.04
You Save: $394.79 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2022-2024 Audi A3 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi A3 Converter & Pipe Part Number: 5WA-254-500-RX
$1305.33 MSRP: $1549.37
You Save: $244.04 (16%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalyst; Converter & Pipe
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2022-2024 Audi A3 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
View related parts
Audi A3 Catalytic Converter Part Number: 1K0-254-506-RX
Product Specifications
- Other Name: Catalyst; Catalytic Converter, Converter & Pipe
- Replaces: 1K0-254-504-EX, 1K0-254-506-R
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2006-2008 Audi A3 | Base | 4 Cyl 2.0 L GAS

Audi A3 Catalytic Converter

Audi A3 Catalytic Converter meets the requirements of the emission standards that converts harmful exhaust into water, carbon dioxide, and nitrogen. The Catalytic Converter unit is mounted in the exhaust path, where the hot gases pass through a substrate surface that has been plated with platinum, palladium, and rhodium, and the precious metals in the Catalytic Converter initiate oxidation of carbon monoxide and hydrocarbons and reduce nitrogen oxides. The initial Audi models applied a two-way Catalytic Converter loaded with ceramic beads, which oxidized CO and HC but provided little control of NOx and also provided a significant amount of backpressure. Since the 1980s the Audi Catalytic Converter has moved to a three-way honeycomb with closely packed passages, exposing more gas to the catalyst and offering easier flow; therefore the new design removes NOx and gives better throttle response than the bead-packed design. Irrespective of type, common failure causes on any Audi include misfires, rich fuel blends, coolant or oil spillages that overheat or coat the substrate as well as road debris that can dent the shell. The warning indicators include rattling, slow acceleration, and the check-engine light, and there is a possibility of a failed smog test. Even though each converter adds some level of restriction, more recent Audi models are more balanced between purification and performance, so the new A3 passes harsh regulations without losing the everyday driving response.

Choose original equipment manufacturer Catalytic Converter for great performance and strong durability. They use Audi's official craftsmanship and high-grade materials, and meet strict quality standards. Are you looking for quality Catalytic Converter at a good price? Come to our online store. We carry a wide range of genuine parts for your Audi A3 and the prices are competitive. Each part comes with the manufacturer's warranty. You can install with confidence and get steady results. Over time, you'll save money and avoid hassle. Keep your maintenance simple and protect your vehicle with OEM parts. Get the quality your A3 needs now.

Audi A3 Catalytic Converter Parts and Q&A

Catalytic Converter
1K0-254-401-R
Q: What are the important facts owners should be aware of to ensure the proper functioning of a catalytic converter throughout its service life on Audi A3?
A:
The catalytic converter is a durable and very easy tool and needs no maintenance yet the owners should take note of few facts that they should observe to have proper operations of this device during the life of its use. One should also never use leaded or lead-replacement petrol because lead and other additives may coat the precious metals reducing their efficiency and eventually destroying the converter. It is important to maintain the ignition and fuel systems in an efficient state as per the schedule of the manufacturer. In case of misfiring of the engine, there should be limited driving until it is corrected. Pushing or towing of the car may wet the catalytic converter with unburnt fuel and therefore may cause overheating when the engine is started. One should not switch off the ignition when the engine speed is high and must not use fuel or engine oil additives that can damage the converter. It is not recommended to keep on driving the car and keep burning oil to the point where blue smoke can be seen. The catalytic converter has its very high temperatures and therefore, after a long running period, one should not park the car in dry undergrowth, long grass or stacked leaves. Also, converter is delicate and should not be hit with tools when servicing it, and one must be keen when handling it. Sulphurous odor Sometimes a smell of rotten eggs may be detected at the exhaust, but this is due not to the converter but to the sulfur in the fuel. With a properly driven and well-maintained car, the lifespan of the catalytic converter should take up to 50,000100,000 miles, and once it stops working, it has to be changed.
Catalytic Converter
1K0-254-402-AX
Q: Is the catalytic converter fitted to diesel models simpler than that fitted to petrol models, and what are the important facts owners should know for optimal performance on Audi A3?
A:
The catalytic converter that is installed on the diesel models is more basic than the catalytic converter installed on the petrol models, although it has to be handled with care to prevent complications. It is a maintenance free and reliable machine, but there are some important things that its owners must know in order to get the best out of the service life of this machine. No fuel or engine oil additives should be employed because they might have toxic contents. In case the engine burns oil to the extent of generating blue smoke, then the car cannot be driven. Catalytic converter is delicate and thus it is not to be hit with an instrument in the course of servicing and care should be taken when removing it in the vehicle. With a properly maintained and properly driven car, the catalyst converter would last between 50,000 to 100,000 miles and its lifetime will need to be replenished.