3 Series G20/G21 - Gloss Black Rear Bumper Diffuser | 2019-2022
Notified by email when this product becomes available
Description
Why Choose This Product?
- 🏁 Sporty Upgrade: M Performance-style rear diffuser adds aggressive, race-inspired styling.
- 🚗 Perfect Fit: Designed for BMW 3 Series G20 & G21 M Sport models (2019–2022, Pre-LCI only).
- 🎨 Gloss Black Finish: Sleek high-gloss look that blends with factory trim.
- 🛡️ Built to Last: Made from premium ABS plastic – lightweight, weatherproof, and impact-resistant.
- 💦 Tested: Maintains secure fit and factory-fresh finish – even after 100+ car washes.
- 🛠️ Easy Installation: Bolt-on fitting with included hardware – no custom modifications required.
- 📦 Complete Kit: Includes rear diffuser and mounting kit.
⚠️ Important Note:
This diffuser is compatible only with M Sport rear bumpers on BMW 3 Series G20/G21 models (2019–2022, Pre-LCI only). It fits both xDrive and rear-wheel-drive variants.
Compatible models include:
• 320i / 330i / 330e / 330d / M340i / M340d (Sedan & Touring)
It is not suitable for SE, Sport Line, Luxury Line, or LCI (facelifted) versions. Please check your rear bumper and exhaust layout carefully or message us with your Model / Year / Trim and a clear rear photo for confirmation before purchasing.
Additional Information
This rear diffuser is precision-moulded from automotive-grade ABS plastic – the same material used in OEM exterior trims. It offers long-lasting durability and resistance against cracking, fading, and weather damage.
The gloss black finish offers a sharp contrast against body colours while enhancing your car’s rear stance and giving it a more muscular, high-performance appearance.
Installation is straightforward with the included mounting kit. We recommend professional fitting to ensure perfect alignment and secure attachment to the factory bumper.
Estimated installation time: 30–45 minutes. Ensure the vehicle is clean and dry before beginning installation.
Have a question?
Not your model? Find Your BMW

Premium Quality

100% Satisfaction

Easy Installation
Feature | CarFitZone | Others |
---|---|---|
Premium Quality | ✔ | ✘ |
Easy Installation | ✔ | ✘ |
Perfect Fit & Compatibility | ✔ | ✘ |
Great Customer Support | ✔ | ✘ |
Enhanced Style & Functionality | ✔ | ✘ |
🛒 Orders & Payments
No. You can check out as a guest, but creating an account lets you track orders and manage your details more easily.
We accept Visa, Mastercard, American Express, PayPal, Apple Pay, and Google Pay. All payments are 100% secure.
If your order hasn’t shipped yet, contact us ASAP. Once dispatched, changes or cancellations aren’t possible.
🚚 Shipping & Delivery
Orders are usually processed within 1 to 3 business day. UK delivery takes 3–5 business days via tracked courier.
Once your order is shipped, you’ll receive a tracking number and link via email.
↩️ Returns & Refunds
You have 30 days from delivery to request a return. Items must be unused, in original packaging. Buyer pays return shipping unless item is faulty.
Contact us within 48 hours of delivery with photos. We'll resolve it quickly – either a replacement or refund.
🚘 Product Compatibility & Warranty
Please double-check your vehicle’s year, model, and trim. Still unsure? Just message us – we’ll confirm compatibility for you.
No – we sell premium-quality aftermarket parts. They’re designed for compatibility, aesthetics, and easy installation.
Not always. Many customers install parts themselves. But for the best fit and finish, we recommend professional fitting.