Genuine BMW M Performance Rear Diffuser Matte Black for 3 Series F30/F31 (2012-2019) Single Left Exit Exhaust | OEM Rear Bumper Insert/Valance/Splitter | Part 51192291417 | Saloon/Touring Sedan Estate | Fits 316d 318d 320d 320i 328d pre-LCI/LCI

Original BMW F30 F31 Back Bumper Diffuser Insert - Matte Black - Left Side Single Outlet - PN 51192291417

Give your 3 Series rear end a sharper, sport-focused look with this authentic BMW lower bumper diffuser insert. Part number 51192291417 is the official BMW component for left-hand single tailpipe layouts on F30 Saloon and F31 Touring models. Finished in matte black and moulded from premium PUR, it delivers that factory upgrade feel with precision fit and long-term durability.

What makes it a great upgrade

• Authentic BMW part for OE fit and finish
• Matte black textured surface for a purposeful, stealth aesthetic
• Finned lower section enhances the stance and frames the left-side tailpipe
• High quality PUR construction for strength and an exact contour match
• Direct swap for the standard lower bumper trim on single outlet cars
• No coding required - designed to clip to the factory rear bumper

Fitment guide

For BMW 3 Series F30 F31 with a single tailpipe on the left. Suitable for:

• F30 Saloon pre-LCI and LCI - 2012 to 2019
  • 316d, 316i, 318d, 318d xDrive, 320d, 320d xDrive, 320i, 320i xDrive, 328d, 328d xDrive
• F31 Touring pre-LCI and LCI - 2012 to 2019
  • 316d, 316i, 318d, 318d xDrive, 318i, 320d, 320d EfficientDynamics, 320d xDrive, 320i, 320i xDrive, 328d xDrive

Important: for single exit left-hand exhaust vehicles only. Not for twin outlet or dual side configurations.

Part number

51192291417

Real-world results

We have installed this diffuser on multiple customer builds and our own cars. Feedback is consistently positive regarding the fit, the quality of the PUR moulding and how the matte finish instantly modernises the back bumper. If you want an OEM upgrade that looks like it came on the car, this is the one to choose.

Professional installation

Prefer a hassle-free fitment service? Book expert installation with MJ Modifications in Warwickshire. Request a fitting quote via info@mjmodifications.co.uk.

Compatibility check

We can confirm fit before dispatch. Add your UK registration or last 7 of your VIN at checkout for peace of mind.

Warranty

Genuine BMW M Performance Part. Two years manufacturer warranty for UK customers and one year for international customers when a valid VIN is provided at checkout on compatible vehicles.

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