Exterior Components› Body Panels and Components

BMW

M Performance Rear Diffuser Insert

$465.00

SKU: 51192455821

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The BMW M Performance Rear Diffuser Insert is a high-gloss black, lower center insert designed for the M Sport rear diffuser on G20 330i and M340i models. It enhances the vehicle's masculine appearance with its distinctive design.
Show original supplier description
The BMW M Performance Rear Diffuser Center Insert is a genuine BMW accessory designed to upgrade the rear aesthetics of your G20 3 Series. Finished in high-gloss black, this center insert specifically complements the M Sport rear bumper and diffuser. This component is designed to be a direct fit for the M Sport rear bumper insert, (#51192455859). It is important to note that this diffuser insert will not fit with the stock rear bumper. It is sold separately from the complete M Performance rear bumper diffuser. Compatibility is specific to the BMW 3 Series G20 chassis, including models such as the 330e, 330e xDrive, 330i (B46D), 330i xDrive (B46D), M340i (B58D), and M340iX (B58D) from 2019 onwards. For exact fitment verification, providing your VIN is recommended before ordering. The product comes with a two-year warranty.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandBMW
Part Number51192455821
CategoryExterior Components

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy