►The death of BMW's normally aspirated straight six is somewhat of a travesty, but the newest turbocharged BMW four-cylinders make a compelling case for the modern generation of engines. Although it's missing the sound of old, the twin-power turbocharger makes the B48 engine far more potent in its original state, with plenty of room for improvement through tuning. It's found in every sedan chassis up to the 7-series and in smaller SUVs like the X3 and X1, making it the most popular BMW engine offered today. After nearly a decade of use, the B48 is considered one of the most reliable modern BMW engines, but it still needs careful attention in a few areas.
Follow along with FCP Euro's Automotive Design Engineer, Alex Nelson, as he dives into the BMW B48 engine to explain everything you need to know about ownership and servicing.
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00:00 - Intro
00:32 - What does the B48 Engine Look Like?
02:28 - What is the BMW B48
04:04 - BMW Engine Code Naming
06:52 - Same Parts between B46 and B48
08:04 - Differences Between the B46 and B48
09:35 - B48 VS B48TU
12:30 - B48 Valve Cover and PCV System
14:24 - B48 Injectors
15:28 - B48 Plastic Oil Filter Housing
17:56 - B48 Heat Management Module (SCV)
19:40 - Inside the B48 Heat Management Module
21:43 - B48 Waterpump
22:25 - B48 Heat Expansion Pipe
23:06 - B48 Fuel Tank Breather Valve
23:50 - B48 Coolant Expansion Tank
24:54 - B48 Improvements over the N20
25:00 - Start/Stop and IROX Coating
26:05 - B48 Second Balance Shaft
28:14 - B48 Fuel Economy - VANOS
30:05 - B48 Engine Conclusion
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