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Cheapest BMW 4 Series DPFs for Sale, Reconditioned and Second Hand

Almost all BMW Diesel Engines now have a diesel particulate filter (DPF) to shrink the 'black smoke' emissions. These filters catch the soot particles produced from the burning of diesel which is normally burnt in the filters when become hot enough. However, with the passage of time, filters become clogged. They also clogged when used in unfavourable conditions or during the ECU remapping process. Clogged diesel particulate filters can certainly decrease the engine performance and cause several faults.
BM Engine Works supply all kind of diesel particulate filters at highly competitive prices. Simply enter your vehicle registration number and we will do the rest for you. We offer supply services across the UK, however, you can save much in terms of money and time if you bring your vehicle at our garage. Our engine experts will fit your DPF and after fitting will test for utmost performance.

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Daily Updates and Fixed Price
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Reliable Service, Quick Service, Quick Turnaround
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Brilliant. No Crazy Surprises
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It's all fixed, thank you
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Thankful for all the work that BM Engine Work has done

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BMW Restoration Stories

Project Name

BMW 428i N20B20B – Reconditioned Engine Installed

BMW 428i N20B20B – Reconditioned Engine Installed Vehicle In 15-Dec-2025 Vehicle Out 19-Dec-2025

Initial Diagnosis

This BMW 428i came in with engine-related faults and was upgraded with a fully reconditioned N20B20B engine from our stock, restoring smooth performance and reliability.

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Project Name

BMW M4 3.0 S55B30A – Low Mileage Engine Upgrade

BMW M4 3.0 S55B30A – Low Mileage Engine Upgrade Vehicle In 01-Dec-2025 Vehicle Out 05-Dec-2025

Initial Diagnosis

This track ready BMW M4 required an engine upgrade instead of factory unit. We provided S55B30A engine and fitted it perfectly,ensuring stronger Performance.

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Project Name

BMW 428i N20B20 – Engine Replacement Completed

BMW 428i N20B20 – Engine Replacement Completed Vehicle In 24-Nov-2025 Vehicle Out 28-Nov-2025

Initial Diagnosis

The vehicle was fitted with a replacement N20B20 engine, restoring full performance and reliability to the BMW 428i engine after internal engine failure.

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Project Name

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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