BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW E46 M3 S54 3.2L (1999-2005)

E46 M3 Rogue Engineering Diablo Exhaust

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T#:3428564

Part#: RE_DIABLO

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$ 1,394.99 USD

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Rogue Engineering is proud to introduce our E46 M3 El Diablo exhaust. A cursory glance at the exhaust easily shows how this exhaust excels in both performance while saving weight. However, a closer look will show the pure artistry of its construction and elements of unique design. Over a Decade of Legendary Performance It's not like Rogue Engineering to rest on its laurels when it comes to development of any performance product. In fact, we are typically the first to market of product in many instances. However, when it came to the E46 M3 exhaust, we were definitely NOT the first ones on the block. By last count, there were already over 20 different companies offering exhausts for the E46 M3. Some companies even offer multiple selections (as if they couldn't make up their mind which was best!). After listening and installing countless aftermarket exhausts in our own facility, we felt we had heard and seen enough of the good, bad and very cheezy. We recognized that most E46 M3 owners had very specific requirements to meet that they found in other exhausts out there. What you see here is the culmination is the best features of many of the exhaust systems found today, at an affordable price with the performance you come to expect from a Rogue Engineering product. El Diablo Features The RE El Diablo is made to fit exactly like factory. Improved, updated specs! Weighs only 30 lbs., 26 lbs. lighter than the factory muffler! (factory is 56 lbs.) 100% T-304 stainless steel construction and internals Fully mandrel bent tubing, no crimps or flattened areas Mil-finished pipes and muffler, mirror polished stainless steel quad 80mm Club Sport tips! Full TIG welded construction, no lock seams or pinch welds. Rogue Engineering logo tastefully stamped in the body of the muffler Flow-through design does not create muffler "hot spots" found on chambered mufflers Optimized tubing sizes and minimized bends maintain exhaust velocity without compromising necessary backpressure Deep, throaty tone, without the drone. ELIMINATE THE FACTORY RASP SOUND WITH THE ROGUE ENGINEERING RASP PIPE! Tuneable sound volume with the use of our EVC X-PIPE (SECTION 2)! Easy to install (compared to other systems in the market) Will not change ground clearance Will not void factory warranty Will not affect emissions No permanent modifications required for installation El Diablo Design; Daring to be Different Much development was spent to optimize the El Diablo exhaust system. To understand the improvements, it is important to see how a stock exhaust functions.

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Supersprint Partial-Stepped V2 Headers (Bolts to Euro Section 1 Exhau...

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T#:177998

Part#: 789801

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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

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Rogue Engineering E46 M3 X-Pipe V2 - Without EVC Valve

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T#:22163391

Part#: RE.XPIPE.E46M3

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$ 644.99 USD

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Replaces the factory section 2 mid pipe. Like all RE products, the section 2 x-pipe was designed to be both high quality as well as functional. Whereas the factory section 2 utilizes two 60mm diameter tubes, with a "H" crossover and small resonator, the RE X-pipe maximizes gas velocity by merging the two smaller tubes into one larger 76mm tube before splitting back into two before the rear muffler. This efficient system allows for gas velocity to equalize from cylinders 1-3 and 4-6, before entering the muffler chamber, improving sound as well as gas velocity. As an added feature, the incorporated external "dump" at the end of the X-pipe for total user controllable sound. The optional EVC valve allows the user to control the exhaust sound from stock (completely closed) to race-like loud (completely open) from within the inside of the vehicle. The user has the option of any variable position (partially open), controlling the exhaust volume and flow. It takes less than 3 seconds to fully open to fully closed. The RE X-Pipe is made to fit exactly like factory. Features include: Weighs only 12 lbs. with included blockoff plate (factory is 22 lbs.) Optional Electronic Valve Control (EVC) valve allows for user controlled exhaust sound levels with touch of a switch (designed to be mounted inside the cabin, with a discreet momentary switch) 100% T-304 stainless steel, full TIG welded construction. Version 2 now incorporates a 2-piece design allow for integration of the ROGUE ENGINEERING E46 M3 TRACK EXHAUST Includes all hardware require to mount to aftermarket exhausts. Will not change ground clearance Will not affect emissions No permanent modifications required for installation EVC Kit - ES3509316 The optional EVC sound control kit includes the following: US-made EVC Valve (6061-T6 Aluminum body and plate, stainless steel butterfly/shaft, High Temp Steel Gears) Custom wiring harness, specifically designed for internal console mounting in E46 M3. All you need is power and ground source for wiring. Custom momentary rocker switch Hardware and gaskets for mounting valve to RE X-Pipe. Stainless steel downturn exhaust tip (diverts exhaust gases towards the ground)

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Exhaust Support Bracket With Hardware

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T#:36981051

Part#: RE.309.NOKT

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$ 169.00 USD

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Note these are sold EACH. For an E46, you need to purchase two to replace both of them on the car. For E9X M3 and E88 128i/135i, they only use one bracket. Each order includes a pair of replacement exhaust hangers at NO CHARGE!

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Genuine BMW Exhaust Manifold Hex Nut - 11721437202

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T#:12554

Part#: 11721437202

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$ 1.96

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

$ 1.56 USD

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OE BMW exhaust manifold mounting hex nuts. Best to replace when installing new headers or removing the old exhaust headers for any reason. We also recommend replacing the exhaust studs as well do to corrosion often building up on the end, preventing them from being removed or installed easily.

COPPER HEX NUT - 7mm : 119500

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Elring Exhaust Gasket - S54

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T#:384318

Part#: 18307830674

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$ 13.99 USD

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Located between the downpipes and the center section of the exhaust. This seals off the connection between the exhaust pipes.

Fits the following BMW engines:
S54 3.2L

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ECS Exhaust Hanger Locking Collar - 10mm

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T#:40106222

Part#: 053563LA02

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Sale - Save 10% $ 16.99

This product was last offered at the strikethrough price on
06-14-2026

$ 15.29 USD

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$ 15.29 USD

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Achieving precise exhaust fitment can be tricky—especially when the exhaust hanger has room to slide. This movement can cause annoying rattles or even lead to contact with the underbody or rear bumper. The ECS Tuning Exhaust Locking Collar offers a simple and effective fix. Designed to clamp securely around the exhaust hanger, this collar keeps everything firmly in place, eliminating unwanted movement.

Crafted from high-strength 6031 billet aluminum and finished in a sleek black anodized coating, it delivers both durability and corrosion resistance. With this collar in place, your exhaust stays exactly where it should—no rattles, no surprises.

Product Design:

Made from precision machined 6061 aluminum Black anodized finish Stainless steel M5 X 0.8mm hardware Installation & Support:

Install the locking collar around your exhaust hanger, position the hanger in place, and snug the locking collar down in place against the hanger! ECS Exhaust Hanger Locking Collars are available for 10mm and 12mm exhaust hangers. Please measure your hangers before ordering. The 12mm locking collar can be found HERE.

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Rein Self-Locking Nut

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T#:12678

Part#: 18301737774

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$ 4.99 USD

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Be sure to install new hardware with your new parts to ensure proper tightening and fitment. This is an M10 self-locking nut, used in various locations in the vehicle. Be sure to check for proper size and application prior to ordering.

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Genuine BMW M8 Copper Exhaust Lock Nut - BMW

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T#:7032

Part#: 18307620549

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$ 1.99 USD

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Replaces your exhaust hardware every time it is taken apart to prevent seized nuts and bolts.

Downpipe To Catback Reducer - Priced Each

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T#:587348

Part#: 008709ECS03A

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Sale - Save 75% $ 38.99

This product was last offered at the strikethrough price on
05-03-2026

$ 9.79 USD

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$ 9.79 USD

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Embark on your custom exhaust project confidently with the ECS Tuning Universal Exhaust catalog, offering quality and price-friendly options. Crafted from T304 Stainless Steel for corrosion resistance, these items feature premium benefits akin to our In-House Engineered Exhaust Systems. With a 3.0" ID (Slip fit) X 65mm OD (Butt) connections, 1.5mm (.060") wall thickness tubing ensures durability. Length on the 65mm OD side is 2.25" while on the 3.0" ID side is 3.50". Ideal for fabricating your unique exhaust system, these universal parts guarantee top-tier quality and longevity.