ECS BMW Aero & Body for BMW E46 M3 S54 (1999-2005)

Clear BMW chassis

Please ensure your correct model is selected

Body kits include front, side, rear, and other components to completely alter or update the appearance of your BMW. These may not be wild and attention-getting add-ons. We offer many pieces that replicate factory bodywork from M3, M5, M Sport and other BMW factory aero kits. Updating the trim and appearance is a great way to add value and refresh your car's ordinary looks. We also have several OE replacements to refresh the exterior of your car. Can't find what you need? Give us a call, we can get anything you need for your BMW.

Sub-Categories

Sort By:

Replica E46 M3 "CSL Inspired" Front Bumper Spoiler
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:374882
Part#: CSLE46M3FT
In Stock
$ 735.99 USD
$ 735.99 USD

This is a high quality reproduction of the Euro-only model E46 M3 CSL style front bumper cover spoiler. Unlike the stock E46 M3 style bumper, this CSL style has no fog light openings, and a single duct on the driver's side that can be made to function as a cold air intake inlet/duct. The bumper is made of polypropylene (PP) plastic, just like a factory BMW bumper covers. It also features pre-installed carbon fiber lips, very much in keeping with the factory CSL part. Best of all, this CSL-inspired bumper is available for only a fraction of what a real CSL bumper would sell for -- the BMW dealers themselves are forbidden from ordering genuine CSL parts anymore, making the "real thing" even harder to come by. This bumper comes as shown, primed ready to prep and paint. Includes US license plate mount (bumper is pre-drilled to accpet the license plate mount). The screen for the intake hole is not included but can be added from the options below. Professional paint and installation is highly recommended.

This M3 CSL style bumper can be used on the following BMWs:

2001-2006 E46 M3

Show More Show Less
ECS - Corporate Logo
T#:8138616
Part#: 013903LA
In Stock
Sale - Save 7% $ 1,874.99

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

Starting at $ 1,736.48 USD
Free Shipping
Sale - Save 7%
$ 1,874.99

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

Starting at $ 1,736.48 USD
Free Shipping
Maximize rear tire contact with our in-house engineered, adjustable Carbon Fiber Rear Wing
ECS Tuning CSL Carbon Fiber Front Lip - E46 M3
10X Entries Into Our F80 M3 Sweepstakes
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:394379
Part#: CARB-FL-04C
Back Ordered
Sale - Save 3% $ 651.99

This product was last offered at the strikethrough price on
06-13-2026

$ 632.43 USD
Free Shipping
Sale - Save 3%
$ 651.99

This product was last offered at the strikethrough price on
06-13-2026

$ 632.43 USD
Free Shipping
ECS Tuning's E46 M3 CSL One Piece front lip gives you the look of a true CSL M3 without the high cost. This piece is made from full carbon fiber and will fit OEM M3 and exact replica front bumpers.
Show More Show Less

CSL Style Carbon Fiber Diffuser
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:391782
Part#: E46CSLCFDIFF
Back Ordered
Sale - Save 5% $ 515.99

This product was last offered at the strikethrough price on
06-13-2026

$ 490.19 USD
Free Shipping
Sale - Save 5%
$ 515.99

This product was last offered at the strikethrough price on
06-13-2026

$ 490.19 USD
Free Shipping
Half carbon diffuser to complete your CSL look

ECS Street Flow Rear Diffuser - E46 M3
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:20815172
Part#: 047616LA01KT
In Stock
Sale - Save 15% $ 520.99

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

$ 442.84 USD
Free Shipping
Sale - Save 15%
$ 520.99

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

$ 442.84 USD
Free Shipping

ECS Exclusive Proudly Offered at Turner Motorsport!

Add-on diffuser to deliver a true motorsport look to your M3. Fastened seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E46.

The E46 M3 is an amazing looking car right out of the box but a common BMW issue is the height of the front vs rear bumpers. As far back as the E30, the front bumper is much lower than the rear bumper and the E46 M3 faces the same issue. With this problem the front bumper is always super low to the ground and the rear bumper looks in-complete. The ECS add-on diffuser is a unique option for balancing out the rear bumper with the height of the front bumper for a full and complete look.

Give your M3 that wild style that stands out from the crowd, and obtain a nice balanced look. This is just the start of a new line of Street Flow Diffusers diffusers that are a must have extension of your awesome ride. The diffusers come powder coated in a sleek satin-black finish, are a blast to install and fit seamlessly against the rear bumper for a professional looking install every time. The Street Flow diffuser attaches below your factory rear diffuser and exhaust of your choosing to fill out the rear end for a nice full and aggressive styling profile.

Lets take a trip together down a new and unique path. Over the years ECS has designed factory replacement ABS and Carbon Fiber diffusers for all different models of BMW's. For the factory replacements ECS focus was to take the oem characteristics and add a twist and really bring out a more aggressive look with a direct replacement diffuser. For their new line of diffusers, us as car enthusiasts wanted to design a set of diffusers that really pushed the envelope and stepped outside of our comfort zone. Our new line of add-on diffusers is a result of our engineering team and fellow enthusiasts spending time study the M3 chassis, modeling different designs, testing prototypes and making changes to get a final product that we are extremely excited to offer. The E46 M3 Street Flow Diffuser is the first in our line of new diffusers. Stay tuned for the E36 M3 and the E92 M3 diffusers next!

Features:

Adds an aggressive aesthetic in addition to the subtle factory rear diffuser
Lightweight and durable 10ga aluminum in satin black powder coat to blend with the factory trim color
Installation is secure and simple with ample adjustability built in for perfect fitment
Design:

10 ga 5052 aluminum construction
Black satin powder coat for long term corrosion resistance
5 piece design to simplify installation
Slotted mounting locations to allow for mounting adjustment
Laser cut ECS logo pre powder coat for a smooth finish
Hidden hardware for better aesthetic

Show More Show Less
Carbon Fiber Trunk Lid - E46 Convertible
For Convertible models only - Not for Coupes
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:389591
Part#: 008002ECS01
Ships in 5 Business Days
$ 1,125.99 USD
Free Shipping
$ 1,125.99 USD
Free Shipping
This CSL inspired trunk lid for 1999-2006 E46 3 series Convertibles and saves precious weight over the heavy steel stock BMW trunk lid. It also looks great, especially if you are into the naked carbon fiber look. This particular trunk lid's styling has a slightly swept up rear edge, reminiscent of the E46 M3 CSL -- which also had a carbon fiber trunk lid with an integral "spoiler" edge built into it. 

We were pleasantly surprised by the fit and finish of this trunk lid, particularly at this price. The trunk lid fits as good as any other carbon fiber lid we've come across. Some modifications and provisions need to be made to fit all trunk auxiliary components, such as lighting, trunk latch, hood shocks, emblems and interior trunk trim -- which is why we highly recommend professional installation on these (even if you're not having it painted). As with any carbon fiber or fiberglass body panel, extra time and preparation will be required to ensure the best fitment and installation. While no aftermarket body panels fit as perfectly as original OEM BMW panels, we were very satisfied with the overall quality and fit of these trunk lids. If you are mounting it unpainted to keep the carbon fiber visble, this trunk lid already comes with a clear gelcoat finish so that it is already exactly how you'd want it. 

Professional installation highly recommended. 

This carbon fiber trunk lid fits the following BMWs:  
1999-2006  E46 BMW   Convertibles 323Ci 325Ci 328Ci 330Ci 
Show More Show Less

Carbon Fiber Front Lip Spoiler
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:370810
Part#: CARB-FL-04
Ships in 5 Business Days
$ 390.99 USD
$ 390.99 USD
Give the front of your BMW a much more aggressive look while adding a touch of style with this carbon fiber front lip spoiler from ECS Tuning. Like all pieces manufactured by ECS Tuning, this carbon fiber lip spoiler has been developed and tested for fitment by our own research and development department. By doing all testing on the vehicle instead of a mold or unmounted bumper, the fitment of this part will be fantastic. And because there are no middle-man costs, ECS passes along all of those savings to you, making this lip spoiler a fantastic bargain. Upgrade the style of your from bumper on your M3 or M3 replica bumper with this carbon fiber lip spoiler from ECS Tuning. Professional installation recommended. Give the front of your BMW a much more aggressive look while adding a touch of style with this carbon fiber front lip spoiler from ECS Tuning. Like all pieces manufactured by ECS Tuning, this carbon fiber lip spoiler has been developed and tested for fitment by our own research and development department. By doing all testing on the vehicle instead of a mold or unmounted bumper, the fitment of this part will be fantastic. And because there are no middle-man costs, ECS passes along all of those savings to you, making this lip spoiler a fantastic bargain. Upgrade the style of your from bumper on your M3 or M3 replica bumper with this carbon fiber lip spoiler from ECS Tuning. Professional installation recommended.
Show More Show Less
E46 M3 Carbon Fiber Front Fender Set
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:583181
Part#: 024942ECS028
In Stock
Sale - Save 10% $ 899.99

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

$ 809.99 USD
Sale - Save 10%
$ 899.99

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

$ 809.99 USD

Increased aesthetics to turn heads and set yourself apart from the crow. Featuring lightweight carbon fiber weave with a high-gloss, uv protected finish.

Drop weight and increase the style rating on your E46 M3 with new light-weight carbon fiber fenders. Includes mounting locations for both trim and grills. Packaged securely with foam on the edges to ensure your fenders arrive glossy and problem free!

Show More Show Less