BMW Performance Headers & Downpipes for BMW E46 M3 S54 (1999-2005)

Clear BMW chassis
Headers are a bolt-on component that will make a huge improvement in how your BMW performs. As a replacement for your factory BMW exhaust manifold, our BMW headers provide a more direct path for exhaust gasses leaving your engine. Headers prevent your BMW's exhaust pulses from "fighting" one another as they leave the head. The end result is that BMW headers give you more power and torque, and you'll love the high-winding top end push that a free-breathing engine exhibits. BMW headers are a must-have if you're doing any engine modifications on your vehicle. Along with a cold air intake, BMW headers provide the free-flowing exhaust necessary to get the most power out of your motor.

Air Pump/EGR Block-Off Plate with Gasket
Air Pump/EGR Block-Off Plate with Gasket
Deleting the secondary air pump from your exhaust? This p...
Turner Motorsport - Corporate Logo
T#:211091
Part#: TMS211091
Available
$24.90
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Deleting the secondary air pump from your exhaust? This plate is the perfect touch! The air pump (also known as EGR system) has proven to be a headache for many BMW owners and it's one of the first things to go when building a racecar. The air pump is not required in many racing classes and deleting it saves some weight, complexity, and won't interfere with the rest of the exhaust or engine management system (deleting the air pump will require special programming in the ECU, a simulator, or a stand-alone engine management system). When removing the air pump valve from the head the port is left open that needs to be blocked off. That's where this little plate comes in. This is actually a factory BMW part and includes a new steel gasket to the head. It will slide over the existing studs and secure with the existing nuts.

This item fits the following BMWs:
1999-2006 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
1999-2003 E39 BMW 525i 528i 530i 540i M5
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
E46 M3, Z4 M Custom Performance Stainless Stepped Headers
E46 M3, Z4 M Custom Performance Stainless Stepped Headers
Custom Performance Innovations has produced their own per...
Turner Motorsport - Corporate Logo
T#:201429
Part#: SH001
Direct Ship
$1,218.95
$1,218.95
Custom Performance Innovations has produced their own performance headers for the E46 M3 with outstanding quality, workmanship, and power gains. The CPI headers use a stepped design of increasing pipe diameters and mandrel-bent piping for superior exhaust flow. The header tubes are slightly over-sized from the stock exhaust ports and all connections have smooth transitions which promotes exhaust scavenging and flow. The craftsmanship is among the best in the M3 header market and unbeatable for the price. The headers are made with 321 stainless with a satin finish and O2 sensors and EGT sensor ports are included in the correct places (a common fitment issue on lesser-quality headers). To make your installation easier, pick up the Gasket and Hardware Kit from the options below.

CPI measured gains of 15hp and 12 ft-lbs at the wheels using a Dyno Dynamics dynamometer (which displays a lower number compared to other brands of dynos).

With the quality of the design and craftsmanship, this header is unbeatable for the price!

Features:
  • T321 stainless steel with satin finish - better corrosion resistance than 304 stainless
  • TIG welded connections - stronger weld with less fatigue to surrounding metal
  • Stepped design with the leading pipes fitted inside the secondary pipes (instead of the opposite) - un-impeded flow
  • 3-way merge collector on both banks using same construction as above - improved exhaust scavenging and flow
  • Precision cut flanges and blended with the exhaust tubing - no lip, edge, or obstruction to flow
  • Outlet flanges that will work with nearly any Section 1 system - greater flexibility with the rest of your exhaust
  • Careful placement of O2 sensor and EGT sensor bungs - hassle-free fitment
    Header Details
    section:stepped headers
    connects to:stock US section 1 or Supersprint section 1 straight pipes or metallic cats
    material:T321 stainless steel

    This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

    This item fits the following BMWs:
    2001-2006 E46 BMW M3
    2006-2008 E85 BMW Z4 M Roadster M Coupe
  • E46 M3 Euro Header/Shark Injector Software Package
    E46 M3 Euro Header/Shark Injector Software Package
    Headers, Hardware, & Software Bundle! Factory Eur...
    Turner Motorsport - Corporate Logo
    T#:340198
    Part#: TMS3879
    Ships in 1 day
    Starting at $1,602.90
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    Starting at $1,602.90
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    Headers, Hardware, & Software Bundle!

    • Factory Euro M3 Headers
    • Gaskets, manifold stud nuts
    • Shark Injector Race Software

    The original Euro headers for the E46 M3 are the original M3 header upgrade. They were the first set of headers we used back in 2001. These eliminate the original US catalytic converters in the stock US manifold (the Euro cats are under the car in the exhaust center section). With no restriction the Euro headers combined with Shark software will gain over 20hp from a stock US M3 (slightly less gain if using sport cats in section 1).

    There are a lot of different headers for the E46 M3 but many of them are cheap copies of the true Euro headers. These are the genuine article without the quality issues and fitment nightmares of ultra-cheap imitations. Since these are Genuine BMW parts they are a direct fit to your engine with the proper flanges and routing with no interference with the air pump or other accessories. These can re-use the original exhaust studs on the engine and factory gaskets. New gaskets and hardware are included! Since these are straight off the Euro M3 they do not have the same port locations for the post-cat O2 sensors or EGT sensor. These are required even with Race software so they will need to be added by your installer.

    The Shark Injector Race software has been calibrated specifically for headers and no cats. The software features tuning of the fuel, spark, VANOS, and throttle maps to unlock extra horsepower and torque with either 91 or 93 octane. We also raise the rev limit to 8,100 RPM. The throttle maps have been massaged to be smoother in normal mode and smoother and faster in Sport mode. This makes the car a lot easier to drive without the stumbling and bucking of the stock software. The Race software includes programming to run without cats. The post-cat O2 sensors and the EGT sensor must still be installed in the exhaust to prevent additional fault codes

    This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to TMS. You can download the waiver here.

    This item fits the following BMWs:
    2001-2006 E46 BMW M3
    2001-2002 Z3 BMW Z3 M Roadster M Coupe


    E46 M3 Factory Euro Header Set
    E46 M3 Factory Euro Header Set
    The original Euro headers for the E46 M3 are the original...
    Packaged by Turner - Corporate Logo
    T#:348577
    Part#: 11627830658-59DK
    Available
    Starting at $1,088.85
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    Starting at $1,088.85
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    The original Euro headers for the E46 M3 are the original M3 header upgrade. They were the first set of headers we used back in 2001. These eliminate the original US catalytic converters in the stock UE manifold (the Euro cats are under the car in the exhaust center section). With no restriction the Euro headers will gain over 15hp from a stock US M3 (slightly less gain if using sport cats in section 1).

    There are a lot of different headers for the E46 M3 but many of them are cheap copies of the true Euro headers. These are the genuine article without the quality issues and fitment nightmares of ultra-cheap imitations. Since these are Genuine BMW parts they are a direct fit to your engine with the proper flanges and routing with no interference with the air pump or other accessories. These can re-use the original exhaust studs on the engine and factory gaskets. New gaskets and hardware are highly recommended (offered separately below). Since these are straight off the Euro M3 they do not have the same port locations for the post-cat O2 sensors or EGT sensor. These can be added by your installer or run special software to run without them.

    Since these headers replace the factory US catalytic converters they are sold for race and off-road use only. If your series requires a catalytic converter there are multiple options for sport cats in section 1. Special Race software will be required to prevent check engine lights and fault codes.

    This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to TMS. You can download the waiver here.

    E46 M3 Factory Euro Header Set
    E46 M3 Factory Euro Header Set
    The original Euro headers for the E46 M3 are the original...
    Genuine BMW - Corporate Logo
    T#:212681
    Part#: 11627830658-659
    Available
    $1,088.85
    Free Shipping
    The original Euro headers for the E46 M3 are the original M3 header upgrade. They were the first set of headers we used back in 2001. These eliminate the original US catalytic converters in the stock UE manifold (the Euro cats are under the car in the exhaust center section). With no restriction the Euro headers will gain over 15hp from a stock US M3 (slightly less gain if using sport cats in section 1).

    There are a lot of different headers for the E46 M3 but many of them are cheap copies of the true Euro headers. These are the genuine article without the quality issues and fitment nightmares of ultra-cheap imitations. Since these are Genuine BMW parts they are a direct fit to your engine with the proper flanges and routing with no interference with the air pump or other accessories. These can re-use the original exhaust studs on the engine and factory gaskets. New gaskets and hardware are highly recommended (offered separately below). Since these are straight off the Euro M3 they do not have the same port locations for the post-cat O2 sensors or EGT sensor. These can be added by your installer or run special software to run without them.

    Since these headers replace the factory US catalytic converters they are sold for race and off-road use only. If your series requires a catalytic converter there are multiple options for sport cats in section 1. Special software will be required to prevent check engine lights and fault codes.

    This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

    This item fits the following BMWs:
    2001-2006 E46 BMW M3
    2001-2002 Z3 BMW Z3 M Roadster M Coupe
    E46 M3, Z4 M Supersprint Tubolare Full-Stepped Header
    E46 M3, Z4 M Supersprint Tubolare Full-Stepped Header
    Free ground shipping! + 15-19hp gain over 'Euro-s...
    Supersprint - Corporate Logo
    T#:388643
    Part#: 044001KT
    Available
    Sale - Save 10% $2,223.95
    $2,001.56
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    + 15-19hp gain over 'Euro-style' headers,
    + full stepped tubular and equal length headers,
    + bolts to the engine with factory hardware and gaskets,
    + used with Supersprint stepped section 1 (with or without cats)

    Experience the latest design innovation from Supersprint for the E46 M3 -- 'stepped' design headers. While the technology has been in widespread use in Formula 1 for awhile, this is the first application of a stepped design on the E46 M3. In an engine that is tuned as much as the S54, airflow management is critical in getting big horsepower numbers from the exhaust. The Supersprint design is the next step in innovation in header design. By slightly increasing the size of the pipe diameters as the exhaust system moves away from the engine, the exhaust can flow more air. Supersprint's design is tuned specifically for the S54 engine which is important in making more power without losing low-end torque. The headers merge into a precision-fit merge collector. After the headers, the stepped piping size continues into the Supersprint section 1 with or without cats. The section 1 must be purchased separately. Any section 2 and rear muffler can be used with the Supersprint section 1. Our most-popular package for track cars is for the stepped headers with no cats (straight pipe) but cats are available for people who want to keep emissions in check (or if your rules require them). Total horsepower gain with the complete system over a US M3 would be more than 30hp.

    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 design because every aspect is done to such a high level. 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!

    We also recommend using this system on the M3 with special software. The Shark Injector software has been specifically designed for cars running headers but no cats. The software "turns down" the readings from the rear O2 sensors and modifies the tolerances for the EGT sensor. Using an exhaust without the cats and proper software will surely cause a Check Engine Light. Click here for more info on the software.

    Header Details

    section:headers

    requires:Supersprint stepped section 1 (sold separately)

    style:long tube, stepped piping sizing, equal length

    material:T304 stainless steel

    This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to TMS. You can download the waiver here.


    This item fits the following BMWs:
    2001-2006 E46 BMW M3 (left-hand drive only)
    2006-2008 E85 BMW Z4 M Roadster M Coupe (left-hand drive only)


    E46 M3 Supersprint Tubolare Partial-Stepped V2 Headers (Bolts To US Section 1 Exhaust)
    E46 M3 Supersprint Tubolare Partial-Stepped V2 Headers (Bolts To US ...
    Special pricing! Free ground shipping! These Supersprint ...
    Supersprint - Corporate Logo
    T#:388624
    Part#: 044901KT
    Available
    Sale - Save 10% $2,600.95
    $2,340.86
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    Sale - Save 10% $2,600.95
    $2,340.86
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    Special pricing! Free ground shipping! These Supersprint 'Partial-Stepped' headers for the US E46 M3 are a replacement for the stock manifolds/cats and an upgrade from the standard Supersprint headers. This header is a partially stepped design - the tubing diameter increases as it leaves the exhaust port, which helps exhaust flow, but has the factory-sized outlet so it can connect to a factory section 1 exhaust. For making E46 M3 horsepower and performance gains, headers are right at the top of the list (along with changing the rear end gears).

    Since the stock catalytic converters are in the original exhaust manifolds, using any type of tubular non-cat manifolds will give instant power gains. The Supersprint headers are full 304 stainless steel (not mild steel) for better heat dissipation and heat resistance to cracking and de-forming (any headers not made from stainless suffer from structural problems). Supersprint designs their headers with CAD programs and 50 years of exhaust tuning experience. These headers are an improvement over any 'Euro style' header on the market. This part is designed for the US market with the correct flanges for the US exhaust and the O2 and EGT sensor ports pre-installed. Special software or stand alone engine management would be required to keep check engine and fault codes from appearing. Software is recommended to maximize the performance gains from this header upgrade.

    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!

    Section 1 / Catalytic Converter Options
    With this Supersprint part number, there are no options for the exhaust immediately after the headers (known as 'section 1'). It only works with the stock US section 1 or similar.

    Your existing stock section 1


    Header Details

    section:stepped headers

    connects to:stock US section 1 or Supersprint section 1 straight pipes or metallic cats

    material:T304 stainless steel

    This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.


    This item fits the following BMWs:
    2001-2006 E46 BMW M3

    E46 M3 Full Supersprint Stepped Headers & Race Exhaust
    E46 M3 Full Supersprint Stepped Headers & Race Exhaust ...
    Free ground shipping! Sound + Power + Quality = the ultim...
    Supersprint - Corporate Logo
    T#:359361
    Part#: TMS337877
    Available
    Sale - Save 15% $6,149.17
    Starting at $5,226.81
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    Sale - Save 15% $6,149.17
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    Free ground shipping!

    Sound + Power + Quality = the ultimate exhaust upgrade for the E46 M3. The Supersprint Race exhaust has a lot of fans, us included, with the mufflers producing an intoxicating shriek. This system covers the entire E46 M3 exhaust - headers, section 1, section 2, and rear mufflers with special discounted pricing. Although sound is subjective we feel the full Supersprint system produces the sexiest, most thrilling exhaust sound. It's an exotic, European-type sound unlike most American-made rumbling exhausts and it blends perfectly with the technical sophistication present throughout the E46 M3. This system does not diminsh the rasp inherent to the S54 but it's a refined and tuned sound that has won over many fans. And it's not all about the sound - the catless stepped headers free the engine of 30+hp. It's the first system we think of when customers ask for the best. Full system details:

    • Stepped Headers - replaces factory manifolds and cats; equal length stainless tube in increasing stepped sizing
    • Section 1 - matching stepped sizing straight pipes or metallic catalytic converters
    • Section 2 - with or without resonator cross-over pipe
    • Mufflers - Lightweight Race mufflers
    • 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!

    E46 M3, MZ3 S54, Z4 M Supersprint Tubolare V1 Performance Headers
    E46 M3, MZ3 S54, Z4 M Supersprint Tubolare V1 Performance Headers ...
    Free ground shipping! These Supersprint 'Sport&am...
    Supersprint - Corporate Logo
    T#:388639
    Part#: 043901KT
    Ships on Apr 19, 2019
    Sale - Save 15% $1,884.95
    $1,602.21
    Sale - Save 15% $1,884.95
    $1,602.21

    Free ground shipping!

    These Supersprint 'Sport' headers for the S54 are an upgrade to the factory Euro headers, producing more power and torque while being a straight bolt-on to the rest of the factory exhaust system. These are the tubular 'linear' equal length headers (not the full racing stepped headers) that can bolt to any section 1 - US, Euro, or a Supersprint Euro section 1. And these headers are constructed with all of the O2 sensor and EGT sensor bungs for a US E46 M3. For making S54 horsepower and performance gains, headers are right at the top of the list (along with changing the rear end gears). Since the stock catalytic converters are in the original exhaust manifolds, using any type of tubular non-cat manifolds will give instant power gains. The Supersprint headers are full 304 stainless steel (not mild steel) for better heat dissipation and heat resistance to cracking and deforming (any headers not made from stainless suffer from structural problems). Supersprint designs their headers with CAD programs and 50 years of exhaust tuning experience. These headers are an improvement over any 'Euro style' header on the market. Special software or stand alone engine management would be required to keep check engine and fault codes from appearing. Software is recommended to maximize the performance gains from this header upgrade.

    Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound.

    Section 1 / Catalytic Converter Options

    stock section 1

    Supersprint section 1 metallic sport cats*

    Supersprint section 1 straight pipes (no cats)**

    * - you will need to have the rear O2 sensors extended to the new location of the cats.

    ** - cat-delete is sold expressly for race or on-track use only. Special software or stand-alone engine management may be required to prevent fault codes and other conditions.

    Header Details

    section: headers

    connects to: stock section 1 or Supersprint section 1 straight pipes or metallic cats

    material: T304 stainless steel

    This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent into Turner Motorsport.

    You can download the waiver here.


    This item fits the following BMWs:
    2001-2006 E46 BMW M3
    2001-2002 Z3 BMW Z3 M Roadster M Coupe
    2006-2008 E85 BMW Z4 M Roadster M Coupe


    E46 M3 Supersprint Partial-Stepped V2 Headers (Bolts to Euro Section 1 Exhaust)
    E46 M3 Supersprint Partial-Stepped V2 Headers (Bolts to Euro Section...
    Special Pricing! These Supersprint 'partial-stepp...
    Supersprint - Corporate Logo
    T#:177998
    Part#: 789801
    Ships on Apr 19, 2019
    Sale - Save 15% $2,906.35
    $2,470.40
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    Sale - Save 15% $2,906.35
    $2,470.40
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    Special Pricing! These Supersprint 'partial-stepped' headers for the Euro E46 M3, MZ3, and Z4 M are a replacement for the stock manifolds/cats. These are the tubular 'stepped' equal length headers (not the full racing stepped headers) - the header pipes increase in diameter the further they get from the engine until terminiating in a stock Euro-type flange. These stepped headers will bolt to the stock section 1 of the Euro exhaust. For making E46 M3 horsepower and performance gains, headers are right at the top of the list (along with changing the rear end gears). Since the stock catalytic converters are in the original exhaust manifolds, using any type of tubular non-cat manifolds will give instant power gains. The Supersprint headers are full 304 stainless steel (not mild steel) for better heat dissipation and heat resistance to cracking and de-forming (any headers not made from stainless suffer from structural problems). Supersprint designs their headers with CAD programs and 50 years of exhaust tuning experience. These headers are an improvement over any 'Euro style' header on the market. This part is designed for the Euro market with the correct flanges for the Euro exhaust and the O2 and EGT sensor ports pre-installed. Special software or stand alone engine management would be required to keep check engine and fault codes from appearing. Software is recommended to maximize the performance gains from this header upgrade.

    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 design because every aspect is done to such a high level. 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!

    Section 1 / Catalytic Converter Options
    This header works with the flanges on the Euro section 1 (clocked differently than the US exhaust). It only works with the stock Euro section 1 or similar.
    A Euro section 1

    Header Details
    section:headers
    connects to:stock Euro section 1 or Supersprint section 1 straight pipes or metallic cats
    material:T304 stainless steel

    This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

    This item fits the following BMWs:
    2001-2006 E46 BMW M3
    E46 M3 Supersprint Cat-Delete Pipes (Deletes Cats In Stock Manifold)
    E46 M3 Supersprint Cat-Delete Pipes (Deletes Cats In Stock Manifold)...
    Free ground shipping!The cats in the stock US manifold ar...
    Supersprint - Corporate Logo
    T#:388625
    Part#: 044011KT
    Ships on Apr 19, 2019
    Sale - Save 10% $961.95
    $865.76
    Sale - Save 10% $961.95
    $865.76

    Free ground shipping!

    The cats in the stock US manifold are the biggest enemy in making more power from the S54. The cats as part of the stock header are a major blockage to airflow so removing them will unlock a lot of missing horsepower. Ideally, the best way to do this is with a set of Supersprint tubular headers. But if you want to keep your stock manifold and 'gut' the stock cats from them these pipes are the way to go. You can get a lot of the power gains of a true header system at a fraction of the cost. The stock cats are cut along an existing weld in each manifold and this piece is welded in place. Special software or modules will be required to keep fault codes and check engine lights from coming on. Bungs are preinstalled for the post cat O2 sensors. Any Supersprint section 1 piece will bolt on to these downpipes.

    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!

    Fitment note: welding is required to install these pipes on the stock manifold. Once the stock manifolds are removed, cut along the existing seams for the stock cat and remove them. Then re-weld these pipes onto the original manifold.

    section:manifold cat-delete pipes

    connects to:stock or Supersprint section 1

    material:T304 stainless steel

    This is a race exhaust system which alters or deletes the emissions equipment on your car, and may not meet emissions standards in all states. Because of this, we require a waiver of emissions compliance to be signed and sent in to TMS. You can download the waiver here.


    This item fits the following BMWs:
    2001-2006 E46 BMW M3
    2001-2002 Z3 BMW Z3 M Roadster M Coupe

    E46 M3 Supersprint Metallic Sport Cat Replacements for US M3 Header
    E46 M3 Supersprint Metallic Sport Cat Replacements for US M3 Header ...
    Free ground shipping!These HJS metallic sport cats for th...
    Supersprint - Corporate Logo
    T#:189829
    Part#: 044021
    Ships on Apr 19, 2019
    Sale - Save 15% $3,169.09
    $2,693.73
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    Free ground shipping!

    These HJS metallic sport cats for the E46 M3 fit in place of the stock US factory catalytic converters in the header. These are high-flow 100cpsi cats so you get a performance and horsepower improvement while still retaining a catalyst. This makes it perfect for race or track cars that require a 'factory-style' cat in the rules. This Supersprint metallic cat/header is welded to the stock manifold after cutting off the stock cat section.

    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:manifold downpipes with metallic sport cats

    connects to:stock manifold; Supersprint or stock 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:
    1999-2006 E46 BMW M3



    Active Autowerke Header Set - E46 M3
    Active Autowerke Header Set - E46 M3
    Race success is all about gaining fine edges wherever pos...
    Active Autowerke - Corporate Logo
    T#:397389
    Part#: 11-008
    Direct Ship
    $899.00
    $899.00