BMW Catalytic Converters for BMW 3 Series F30 (2012+)

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Our Catalytic Converters are the same quality construction as OEM but at a third of the cost! These are a direct replacement for the original BMW catalytic converter. These bolt on to your stock exhaust manifold and muffler, no welding required. We offer cats for both pre-OBDII BMW's (pre 1996) and BMW's with OBDII (1996+). We offer both 50 state legal converters and less expensive 49 state versions. Meets all EPA and CARB requirements. A factory warranty is included: 5 year/25,000 for 49 State versions, and 5 years/50,000 miles on 50 State legal versions.
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Universal Catalytic Converter - 2.25"
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Emico - Corporate Logo
T#:23152011
Part#: 602205
In Stock
$ 97.99 USD
Free Shipping on orders $49 and up
Enhance your BMW's performance with this OBD II compliant universal fit catalytic converter. This converter, devoid of O2 sensor bungs, ensures compatibility with various vehicles. However, please note that it's not a 50-state legal catalytic converter. For California residents, it's recommended to verify local laws pertaining to aftermarket catalytic converters.
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Genuine BMW Catalytic Converter / Downpipe Installation Kit - B58 3.0...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:27838480
Part#: 18328612537KT4
In Stock
$ 110.99 USD
Free Shipping on orders $49 and up
Prevent engine issues and error codes caused by exhaust leaks with the correct installation of components using appropriate gaskets and hardware.
CTS Turbo High Flow Catted Downpipe
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
CTS - Corporate Logo
T#:18932307
Part#: EXH-DP-0037-CAT
Ships in 3 Business Days
$ 429.99 USD
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$ 429.99 USD
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The CTS Turbo High-Flow Cat for the BMW B46 is made to maximize exhaust flow for the highest power gains. Do not compromise performance and sound with factory parts – unleash your BMW’s potential! Designed using the latest in CAD technology; this part is made to fit perfectly in place of your factory downpipe. Manufactured from T304 stainless steel, hand TIG welded and back-purged to ensure years of reliable performance. Product Details: Precisely designed and tested on a real car in the real world T304 stainless steel, TIG welded back-purged construction Replaces restrictive factory downpipe with high-flow 200 cell catalytic converter Great power upgrade with uncompromising performance Incredible sporty exhaust sound, subtle when cruising No drone with factory exhaust The use of stage 2 software is strongly recommended to avoid the CEL from coming on.
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CTS High-Flow Catalytic Converter/Downpipe - N26
For vehicles equipped with an N26 engine
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
CTS - Corporate Logo
T#:27871827
Part#: CTSEXHDP0054CAT
Ships in 7 Business Days
Sale - Save 10% $ 429.99

This product was last offered at the strikethrough price on
06-25-2026

$ 386.99 USD
Free Shipping
Sale - Save 10%
$ 429.99

This product was last offered at the strikethrough price on
06-25-2026

$ 386.99 USD
Free Shipping

The CTS Turbo High-Flow Cat for the BMW BN26 is made to maximize exhaust flow for the highest power gains. Do not compromise performance and sound with factory parts – unleash your BMW’s potential!

Precisely designed and tested on a real car in the real world T304 stainless steel, TIG welded back-purged construction Replaces restrictive factory downpipe with high-flow 200-cell catalytic converter Great power upgrade with uncompromising performance Incredible sporty exhaust sound, subtle when cruising No drone with factory exhaust Designed using the latest in CAD technology; this part is made to fit perfectly in place of your factory downpipe. Manufactured from T304 stainless steel, hand TIG welded and back-purged to ensure years of reliable performance.

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Genuine BMW Catalytic Converter - EU6 - F22, F23, F30, F32, F33, F34,...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:185132
Part#: 18328602882
Ships in 3 Business Days
$ 4,067.99 USD
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$ 4,067.99 USD
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Price includes $1800.00 core charge.
Direct-Fit Catalytic Converter Downpipe
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Magnaflow - Corporate Logo
T#:27938424
Part#: 52257
Back Ordered
$ 1,232.00 USD
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$ 1,232.00 USD
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Supersprint Turbo Downpipe with Metallic Sport Cat - 105mm Inlet - F3...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Supersprint - Corporate Logo
T#:184240
Part#: 988521
Ships on Oct 6, 2026
$ 2,659.99 USD
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$ 2,659.99 USD
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Special pricing! Free ground shipping! 

The factory 335i exhaust system is pretty wide open with a minimal of restrictions - except for the catalytic converter. The factory cat is the biggest restriction so any exhaust work to gain more power is going to have to involve replacing it with something freer-flowing. Supersprint's downpipe incorporates a high-flow HJS 200-cell metallic cat that flows considerably more than the stock ceramic part. It also uses bigger 80mm piping to minimize restrictions.

Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!

Supersprint metallic sport catalytic converters are sourced from HJS of Germany. For 30 years HJS has been supplying motorsports teams with sport cats when rules required them. HJS is now a worldwide leader in sport cat technology and performance. Rally cars, German DTM, and Formula 3 all rely on HJS for clean, reliable horsepower. Supersprint works closely with HJS to spec a catalytic converter that is correct for the vehicle and engine package. This allows for a substantial increase in flow but which, at the same time, keeps the environmental specs within European limits. With any high-flow catalytic converter, special software or other work may be required to keep emissions fault codes and check engine lights from displaying. Supersprint catalytic converters are sold for track and other off-road uses only.

 

section:downpipe

connects to:OEM exhaust or Supersprint section 1

material:T304 stainless steel

 

This product modifies (but does not remove or defeat) emissions equipment. For this reason this product may not be CARB compliant, and therefore not emissions legal in some states. Consult local laws and regulations in your area. For more information on this product, feel free to contact our sales department.

This item fits the following BMWs:
2012+ F30 BMW 335i 335i xDrive 335xi - Sedan

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Remanufactured Catalytic Converter - Front Position - F2x F3x 228i 32...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:174543
Part#: 18327645666
Ships in 3 Business Days
$ 3,979.99 USD
Free Shipping
$ 3,979.99 USD
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This is a remanufactured catalytic converter for your BMW. If a bad catalytic converter has resulted in a failed emissions test, then this part will get you legal again. Price includes $1800 core charge.

Fits the Following BMWs:

F22 F23 228i 228ix
F30 F31 F34 320i 320ix 328i 328ix
F23 F33 F36 428i 428ix

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Rp-Catalytic Conv. With Center Muffler
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:45278727
Part#: 18308611915KT
Ships in 9 Business Days
$ 5,638.99 USD
Free Shipping on orders $49 and up
This includes a Core Charge of $2574.00!

Catalytic Converter Installation Kit - B58 3.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:27238750
Part#: 18328612537KT2
In Stock
Sale - Save 1% $ 103.99

This product was last offered at the strikethrough price on
03-10-2026

$ 102.45 USD
Free Shipping on orders $49 and up
Sale - Save 1%
$ 103.99

This product was last offered at the strikethrough price on
03-10-2026

$ 102.45 USD
Free Shipping on orders $49 and up
Prevent engine issues and error codes caused by exhaust leaks with the correct installation of components using appropriate gaskets and hardware.