Genuine BMW M Performance Rear Silencer/Muffler Exhaust - F30 F31 F32 F33 F36 328i 428i (incl xDrive) - 3 & 4 Series - Stainless Steel Axle-Back | OEM 18302293771

OEM BMW Sports Backbox Rear Section for F30 F31 F32 F33 F36 328i and 428i, including xDrive

Unlock a richer soundtrack and sharper response with BMW’s factory-engineered sports rear section. This stainless steel rear box is a direct-replacement axle-back that brings a deeper tone, tasteful crackle on lift-off and superb day-to-day refinement. Built by BMW for perfect alignment and long-term durability, it is the ideal OEM-plus exhaust upgrade for 3 Series and 4 Series petrol 328i and 428i models.

Expect precise fitment, high corrosion resistance and an unmistakably premium note without unwanted drone. We have installed this system on numerous customer cars and the feedback is consistently positive for quality, sound and value. If you want authentic BMW sound and an easy bolt-on rear section, this is the one to choose.

• Factory performance rear box and tail silencer for F3x 328i and 428i
• Stainless steel construction with OEM finish for longevity
• Deeper, sportier tone while remaining civilised on the motorway
• Improved flow characteristics for a more responsive feel
• Direct-fit axle-back rear section with no compromise on fit or alignment
• Designed and validated by BMW for quality, sound and reliability

Fitment and compatibility

For petrol 328i and 428i models only, including xDrive all-wheel drive. Compatible with the following F-series vehicles:

• 3 Series F30 Saloon 328i(x) pre-LCI 02/2011 to 07/2015
• 3 Series F30 LCI Saloon 328i(x) 10/2014 to 07/2016
• 3 Series F31 Touring 328i(x) 07/2011 to 06/2015
• 3 Series F31 LCI Touring 328i(x) 12/2014 to 06/2016
• 4 Series F32 Coupe 428i(x) 11/2012 to 01/2017
• 4 Series F33 Convertible 428i(x) 03/2013 to 02/2017
• 4 Series F36 Gran Coupe 428i(x) 07/2013 to 07/2016

Notes: petrol 328i and 428i only. If you are unsure, request a compatibility check below.

Part number

BMW OEM Part Number: 18302293771

Why this OEM rear box is a brilliant upgrade

• Authentic BMW accessory with perfect fit and finish
• Sportier exhaust note without harshness inside the cabin
• OEM-plus look for a subtle factory performance feel
• Back pressure reduction and smoother exhaust gas flow
• Built to withstand UK weather and road salt
• Trusted by our customers and fitted by us regularly

Compatibility check

We verify fitment before dispatch. Add your UK registration or last 7 of your VIN at checkout and we will confirm suitability for your F30 F31 F32 F33 F36 328i or 428i, including xDrive models.

Fitting and installation

Professional installation recommended. MJ Modifications, based in Warwickshire, can supply and fit this rear section. For a tailored installation quote and lead time, email info@mjmodifications.co.uk.

Warranty

Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers when a VIN is provided at checkout on compatible vehicles.

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