CSL Style Carbon Fiber Diffuser - E46 M3
/ PRODUCT ·DIFFUSER

CSL Style Carbon Fiber Diffuser

[ VERIFIED FITMENT ]
E46 M3
€348,95
/
Shipping calculated at checkout.
  • Shipped from USA
/ 0.5 · PAIR WITH

Additions
/ 01 · OVERVIEW

Inspired by the iconic M3 CSL, this CSL Style Carbon Fiber Rear Diffuser brings a bold motorsport look and improved aerodynamic performance to your E46 M3. Designed to closely match the OEM CSL lines, this diffuser is a direct fit for the factory M3 rear bumper and adds aggressive styling with real functional benefits.

Crafted from high-quality 2x2 weave carbon fiber, the diffuser offers a lightweight yet durable construction with a UV-resistant clear coat for long-lasting gloss and protection against fading or yellowing.

Key Features:

  • CSL-inspired design for a clean, aggressive rear profile

  • Made from premium 2x2 carbon fiber weave

  • UV-resistant gloss finish for long-term durability

  • Lightweight construction helps reduce rear-end weight

  • Direct fit for OEM E46 M3 rear bumper (no cutting required)

  • Compatible with most aftermarket exhaust systems

Vehicle Fitment:

  • BMW E46 M3 Coupe & Convertible (2001–2006)

Whether you're building a CSL tribute or simply upgrading the rear aesthetics of your M3, this carbon fiber diffuser is a perfect finishing touch that combines style, performance, and quality craftsmanship.

Please note this is not an OEM BMW part.

/03·SHIPPING
Ships in 1-3 Days
Flat Rate Shipping
Fully Insured

Processing: In-stock items typically ship within 1–3 business days. We do our best to get every order out as quickly as possible. All orders are quality-checked and ship with full insurance coverage. If an item is out of stock, we'll reach out ASAP with an ETA.

Carriers: Carbon fiber and performance parts ship via UPS. Smaller items ship via USPS.

Tracking: You'll receive a confirmation email when your order ships with a tracking link — you can also track it anytime from the order page linked in that email. Allow 1–3 business days for tracking to update.

International: We ship worldwide. Contact us at sales@horizonmotorsport.com for international shipping quotes.

Signature: We may require a signature for high-value orders. Please be available during your estimated delivery window.

/ 04 · CUSTOMER BUILDS

Built by Our Customers

Customer-built. Running HM parts.
FEATURED BUILD
G80 M3 Competition
OWNER

AP2 Performance

Orange County, CA
SPEC SHEET
VR1 FRONT GRILLSP2 FRONT LIPPERFORMANCE V1 SIDE SKIRTSPERFORMANCE V1 DIFFUSERPERFORMANCE V1 INLETS
@ap2.performance
F80 M3
OWNER

Brian

Los Angeles, CA
SPEC SHEET
CS V2 FRONT LIPPERFORMANCE V1 SIDE SKIRTSV STYLE DIFFUSERPERFORMANCE V2 MIRROR CAPSGTS STYLE HOOD
@bbriaann_
A90 Supra
OWNER

Danny

Orange County, CA
SPEC SHEET
AG1 FRONT LIPAG1 SIDE SKIRTSAG1 REAR SPATS
OWNER

Brandon

Irvine, CA
SPEC SHEET
VR1 FRONT LIPCSL V1 FRONT GRILLPERFORMANCE V1 INLETSPERFORMANCE V1 MIRROR CAPSHM S58 CATBACK EXHAUST
Horizon Motorsport - Est. 2019

Built for BMW Enthusiasts

We specialize in quality aftermarket parts for BMW M-cars. Every part we carry is selected, inspected, and shipped with the same care you'd give your own build. Our goal: help you get your car looking and performing exactly how you envisioned it.

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/ ? · ASK A QUESTION

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Fitment uncertainty, install details, compatibility with other mods — whatever it is, our team replies personally, usually within 24 hours.

We read every message. Usually respond within 24 hrs.

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