Rear Diffuser for BMW 3 Series E46 (1999-2005)

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Adding a more aggressive rear diffuser to your BMW can offer some performance benefits, but is primarily an aesthetic upgrade. BMWs naturally look great from the rear, why not make yours look even better?
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E46 M3 ABS High Kick Rear Spoiler & ABS Diffuser
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Enthusiast Bundles - Corporate Logo
T#:25042503
Part#: 028979TMS01EBKT
In Stock
Sale - Save 35% $ 579.87

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

$ 376.68 USD
Free Shipping on orders $49 and up
Sale - Save 35%
$ 579.87

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

$ 376.68 USD
Free Shipping on orders $49 and up

Upgrade your BMW E46 M3's exterior with the Turner Motorsport In-House designed Gloss Black ABS Diffuser. Turner Motorsport's engineers were dissatisfied with existing options, so they crafted a new, affordable solution. This direct bolt-on upgrade, mirroring the style of the Turner Carbon Diffuser, boasts a deep profile, aggressive fin design, and full-width coverage on the rear bumper. Easily installed in minutes using factory mounting locations, this exclusive design promises to turn heads and make a bold statement. Stand out with the Turner ABS Diffuser and enhance your BMW's aesthetic.

  • Curvature designed around E46 M3 body lines
  • In-house design using 3D laser scanning and CAD technology for precision fitment
  • Mounts to existing bumper insert locations with OE hardware
  • Lightweight, vacuum-formed ABS polymer in UV-stabilized gloss black
  • Mimics lower bumper section and OE diffuser lines for accentuating OEM features

E46 M3 Gloss Black ABS High Kick Rear Spoiler

Elevate the appearance of your E46 Coupe with the Turner Motorsport ABS High Kick Trunk Spoiler. Crafted to enhance style while considering budget constraints, this spoiler transforms your vehicle without the high cost of a carbon fiber equivalent. Made from impact and UV-resistant ABS plastic, this light and durable spoiler offers a sporty look that sets your vehicle apart. Installation is a breeze with no drilling or cutting; simply use the pre-mounted double-sided adhesive strips provided. Clean the trunk surface, apply the tape, align, and press down for a secure fit.

  • Designed and engineered by Turner Motorsport in-house using 3D laser scanning and CAD technology
  • Mimics the design of the carbon fiber version for similar styling
  • Accentuates OE body lines along the outer edge of the spoiler
  • Uses 3M double-sided tape for a strong bond to the body
  • Lightweight, vacuum-formed gloss black ABS polymer with UV stabilizer
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Seibon carbon fiber rear diffuser - E46 M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Seibon - Corporate Logo
T#:397114
Part#: RD0105BMWE46M3
Special Order: No Guaranteed ETA
$ 720.00 USD
$ 720.00 USD

Founded in 2003 Seibon Carbon excels in delivering premium quality carbon fiber products to those with discerning tastes. The process begins with the best carbon raw material manufactured in either USA or France; in fact it is the same stock that can be found on high performance racecars, battleships and satellites. Supporting race teams is one of Seibons' specialties and you will see their work in many different platforms and racing types. Drivers such as Michele Abbate in her Scion FRS racecar, Fredric Aasbo in his Formula D Scion tC and even team RS-R in Asian Formula D all rely solely on Seibon to get them to the podium.

Using single piece construction, the carbon is laid inside of a mold instead of being wrapped around it. This allows for a much stronger piece in the end and allows much greater control when the resin is applied. Areas such as door hinges, hood latches and window regulator mounting points are reinforced so as to add strength and longevity through repeated use. Application of the resin is then accomplished using proprietary techniques that allow for a much more uniform coating than most competitors and yields a product that is lighter, since there is no excess.

Finally the product is finished with a glossy clear coat this resists chipping and cracking and gives a glossy wet look. Inspection of the finished product is then performed to ensure there is no weave distortion in tight corners or complex bends.

Features:

  • Proprietary methods to lay wet carbon for a stronger and lighter product
  • UV resistant resins, even a weathered part can be wet sanded and brought back to original finish
  • Panels are 70% lighter than stock as opposed to competitors which come in around 50% lighter than stock.
  • No black paint is used to hide imperfections along detail edges and creases.
  • Partnered with SCCA and Formula Drift bringing their top quality fit and finish to the competition environment.

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

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Street Flow Rear Diffuser & ABS High-Kick Trunk Spoiler - E46 M3 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Enthusiast Bundles - Corporate Logo
T#:37419766
Part#: 047616LA01EBKT
In Stock
Sale - Save 35% $ 764.98

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

$ 499.00 USD
Free Shipping on orders $49 and up
Sale - Save 35%
$ 764.98

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

$ 499.00 USD
Free Shipping on orders $49 and up

Give your E46 M3 a serious rear-end makeover! With this special Enthusiast Bundle, you'll amp up exterior styling, balance out the car’s look, and get a bold, aggressive finish.

E46 M3 Street Flow Rear Diffuser

While the E46 M3 is a visual icon, many enthusiasts feel that the factory rear bumper sits too high, creating an unbalanced appearance—especially for lowered models. Our Street Flow Rear Diffuser is here to address this. Inspired by BMW’s iconic front-to-rear styling mismatch, this diffuser aligns your rear bumper’s profile with the lower front bumper, giving your M3 a more cohesive and grounded look.

This add-on diffuser, with its satin-black powder coat, offers an aggressive, head-turning look while blending seamlessly with the factory styling. It fits directly beneath the stock rear diffuser and around your exhaust, creating a full-bodied, assertive profile that’s guaranteed to stand out. Perfect for enthusiasts seeking a bolder appearance without compromising factory fitment, the Street Flow Diffuser is the first release in our all-new series of add-on diffusers. Be on the lookout for future designs for the E36 and E92 M3 models!

Key Features:

Bold Styling: Enhances the stock diffuser for a more aggressive rear end Durable Construction: Made from lightweight yet strong 10-gauge 5052 aluminum Satin-Black Finish: Powder-coated for corrosion resistance and a factory-like appearance Precision Fitment: Adjustable installation slots for a perfect fit Seamless Aesthetics: Comes with hidden color-matched hardware and a laser-cut ECS logo for a premium look Specifications:

Material: 10-gauge 5052 aluminum Design: 5-piece construction for ease of installation and durability Mounting: Slotted mounting points for easy adjustments ABS High-Kick Rear Trunk Spoiler

Looking to bring more edge to your E46 coupe? The Turner Motorsport ABS High-Kick Trunk Spoiler adds that perfect sporty touch—without the high cost of carbon fiber. Designed for easy, drill-free installation, this spoiler transforms your trunk lid’s look with its high-kick style that complements the E46’s original body lines. Crafted from impact-resistant, UV-protected ABS plastic, this spoiler provides durability along with a polished, gloss black finish that catches the eye.

Using precision 3D laser scanning and CAD technology, Turner Motorsport developed this spoiler for a perfect fit that mirrors our premium carbon fiber version. With pre-installed double-sided 3M adhesive strips, you can apply this spoiler in minutes—simply clean, align, and press down for a secure fit that’ll turn heads.

Key Features:

Sporty Look: Enhances the E46’s lines with an aggressive, high-kick style Easy Installation: No drilling or permanent modifications required; mounts with 3M double-sided tape High-Quality Build: Made from lightweight, UV-resistant ABS for long-lasting looks Precision Fit: Designed using 3D scanning and CAD for factory-like fitment Specifications:

Material: Gloss black ABS plastic with UV stabilizer Installation Method: Pre-mounted 3M adhesive strips for secure mounting

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