BMW Catalytic Converters for BMW 5 Series E39 (1996-2003)

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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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BMW Universal Catalytic Converter - 2.25"
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Emico - Corporate Logo
T#:23152011
Part#: 602205
Ships in 3 Business Days
$ 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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E39 540i/M5, E38 740 Supersprint Section 1 Metallic Sport Cats (Bolt-...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Supersprint - Corporate Logo
T#:184533
Part#: 786802
Ships on Sep 10, 2026
$ 2,934.00 USD
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$ 2,934.00 USD
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Free ground shipping!

Supersprint sport cats for the M5 V8 are designed to work with their performance headers and replace the stock main cats. The Supersprint sport cats are much freer-flowing than a factory-style cat. With less restriction, less effort is required to move the exhaust gasses which will free up horsepower and torque. This cat section will mount to the Supersprint merge collectors and then to a Supersprint or stock section 2. These are built with O2 sensor bungs pre-installed after the cat which makes for an easy install.

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:section 1 with metallic sport cats

connects to:Supersprint headers; Supersprint or stock section 2

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:
1999-2003 E39 BMW M5

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Direct-Fit Catalytic Converter - Left
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Magnaflow - Corporate Logo
T#:374316
Part#: 23306
Ships in 1 Business Day
$ 807.00 USD
$ 807.00 USD
The catalytic converter is an emissions device that converts the exhaust gasses exiting the engine into a less toxic substance. This is achieved through the internal honeycomb monolith, washcoat, and the catalyst itself that commonly consists of a mix of precious metals. Unfortunately the catalytic converters do not last forever, and can be damaged if the engine is running too rich on fuel. If you're getting an oxygen sensor fault, and the sensor is ok, the likely cause is a failed catalytic converter. Relieve worry about an upcoming emissions test and replace your faulty or damaged catalytic converter. Stainless steel construction Federal Emissions compliant design Formulated for Gas and Diesel Applications
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"BMW E39 Touring 520i / 523i / 528i 9/'98 -> '00 Front exhaus...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Supersprint - Corporate Logo
T#:352917
Part#: 785502
Ships in 3 Business Days
$ 3,260.99 USD
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$ 3,260.99 USD
Free Shipping

Direct-Fit Catalytic Converter - Right
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Magnaflow - Corporate Logo
T#:374317
Part#: 23058
Ships in 1 Business Day
$ 682.00 USD
$ 682.00 USD
The catalytic converter is an emissions device that converts the exhaust gasses exiting the engine into a less toxic substance. This is achieved through the internal honeycomb monolith, washcoat, and the catalyst itself that commonly consists of a mix of precious metals. Unfortunately the catalytic converters do not last forever, and can be damaged if the engine is running too rich on fuel. If you're getting an oxygen sensor fault, and the sensor is ok, the likely cause is a failed catalytic converter. Relieve worry about an upcoming emissions test and replace your faulty or damaged catalytic converter. Stainless steel construction Federal Emissions compliant design Formulated for Gas and Diesel Applications
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Genuine BMW Screw Plug - M8x1mm
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Genuine BMW - Corporate Logo
T#:39025522
Part#: 07119907133
Ships in 1 day
6% off MSRP $ 17.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 16.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 17.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 16.99 USD
Free Shipping on orders $49 and up
Replacement screw plug directly from BMW

Genuine BMW Catalyic Converter - E39 M5 - Right - 50 state legal ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:375960
Part#: 18301406813KT
Ships in 7 Business Days
$ 4,354.99 USD
Free Shipping on orders $49 and up
Includes $50 core charge that will be refunded once we receive your rebuildable core.
Genuine BMW Catalyic Converter - E39 M5 - Left - 50 state legal ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:375958
Part#: 18301406812KT
Ships in 7 Business Days
$ 4,352.99 USD
Free Shipping on orders $49 and up
Includes $50 core charge that will be refunded once we receive your rebuildable core.

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