MT Auto Parts Blog | Expert Tips for BMW enthusiasts on BMW Parts, Accessories, Engines and More

  Image: BMW N63B44C complete engine, for 750I, 4.4L V8 engine power with just 30K miles on it. Check it out at MT Auto Parts.  If you’ve ever searched for BMW engines , you’ll have come across engine codes that look like this: N47D20, B48B20, S55B30, M57D30 and so on. At first glance, they seem cryptic, just a string of letters and numbers. In reality, BMW engine codes follow a structured system. Once you understand what the first letter means, N, B, S or M, the rest begins to make sense. And if you’re researching BMW engine parts or looking to buy a BMW engine, understanding these codes is essential. Why BMW Engine Codes Matter BMW does not identify engines purely by model name. A “320d” or “330i” badge tells you the market designation, not necessarily the exact internal engine variant. The engine code is the technical identity. It determines: Compatibility of BMW engine parts Fitment for engine replacements Emissions specification Turbo configuration Power output variants T...

  Image: BMW S63B44B Complete Engine, available at MT Auto Parts for £9,999.99 If you drive a BMW, one of the most important things to know is exactly which engine is under the bonnet. If you’re sourcing replacement parts, checking compatibility, or simply learning more about your car, identifying your engine code gives you the confidence to find the right components quickly and accurately. In this guide, we’ll show you simple, practical ways to check your BMW engine, including how to identify it by registration number (reg) and explain how this helps you choose the correct used BMW parts with ease. Why It Matters When Buying BMW Parts When you’re buying BMW parts, one of the first things to check is whether they match your engine type. Even models that look similar on the outside can have very different engines inside. If the part isn’t built for your exact setup, it may not fit or work correctly. That’s why knowing your engine code is so useful; it helps you: Find parts that are...