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Cheapest Online Prices for Second hand & Recon BMW 4 Series Automatic Gearboxes

BMW is the only auto manufacturer who uses the sophisticated automatic gearboxes in their vehicles. Some BMW 4 Series automatic gearboxes, due to many reasons, start malfunctioning and lead to several problems in the drive train system. If you are facing these kind of issues and after a replacement automatic gearbox for your BMW 4 Series then you are at right place. If your BMW 4 Series automatic transmission has given up on you and you are finding it hard to look for a quality gearbox. Don't worry, BM Engine Works are here to help. You can buy new, reconditioned and used BMW 4 Series automatic gearboxes from us at highly competitive prices and with standard guarantee.
We have the largest stock of BMW automatic gearboxes in place, ready to fit in your BMW 4 Series. We offer both supply and fitting services and delivery at very cheap prices. If you wish a delivery of your purchased transmission at your place, you can use our nationwide delivery service.

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BMW 420D N47D20C – Full Engine Replacement & Reconditioning

BMW 420D N47D20C – Full Engine Replacement & Reconditioning Vehicle In 10-Nov-2025 Vehicle Out 14-Nov-2025

Initial Diagnosis

Vehicle arrived with critical internal engine damage. Upon inspection, our team recommended a complete BMW 420d engine replacement using a high-quality N47 D20C engine.

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Project Name

BMW M4 S55B30A – Reconditioned Engine Installation

BMW M4 S55B30A – Reconditioned Engine Installation Vehicle In 20-Oct-2025 Vehicle Out 24-Oct-2025

Initial Diagnosis

Vehicle arrived with a knocking sound from the bottom end of the engine. Crankshaft and con rod bearing damage was found, requiring a complete BMW M4 engine Replacement.

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