BMW
Genuine BMW M Performance Carbon Fibre Rear Diffuser for 3 Series G20/G21 (2018+) | OEM 51192455819 | Fits 318d 320d 320i 330d 330e 330i
Genuine BMW M Performance Carbon Fibre Rear Diffuser for 3 Series G20/G21 (2018+) | OEM 51192455819 | Fits 318d 320d 320i 330d 330e 330i
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
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Factory Original Carbon Fibre Rear Valance for BMW 3 Series G20 G21
Give the back end of your BMW 3 Series a sharper, motorsport-inspired finish with this authentic factory rear valance in carbon fibre. Built by BMW for perfect panel alignment and a premium look, this OEM aero trim elevates the stance of your saloon or touring while keeping true to the original quality standard. We run this upgrade on our own cars and for customers, and the response has been consistently brilliant for fit, weave quality and overall appearance.
OEM Part Number: 51192455819
Why enthusiasts choose this OEM carbon fibre rear valance
- Authentic BMW part for precise fitment and factory-level finish.
- Real carbon fibre construction for a lightweight, high-end look.
- Transforms the rear profile with a purposeful, performance-led aesthetic.
- Seamless integration with other BMW exterior styling upgrades.
- Proven on our own builds and customer vehicles with excellent feedback.
Vehicle compatibility
BMW 3 Series G20 G21 (2018 onwards), including:
- 318d
- 320d
- 320i
- 330d
- 330e
- 330i
- xDrive variants where applicable
Important fitting note
This carbon fibre lower bumper insert requires the BMW High Gloss Black Rear Bumper Trim to be installed at the same time. This item is sold separately.
Installation
Professional fitting is recommended. For UK customers, book installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.
Compatibility check before dispatch
To ensure the correct part for your car, provide your UK registration or the last 7 characters of your VIN at checkout and we will verify compatibility before shipping.
Manufacturer
BMW. Original BMW Performance Parts.
Warranty
Two years manufacturer warranty for UK customers and one year for international customers when a VIN is supplied at checkout on compatible vehicles.
Search terms customers use
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