Knowledge Base
Engine Systems & Internals
Complete technical breakdowns of every BMW engine family — N20, N54, N55, B58, S55, S58, M50, M54, N52 and more. Architecture, specs, weak points, and how they work.
BMW Spark Plug Replacement Guide Spark plugs are one of the most overlooked maintenance items on BMWs. Here's everything you need to know. Replacement Intervals | Engine |…
4 months ago
BMW S55 Engine — The M3/M4 Powerplant Explained Overview The S55 is BMW M's 3.0-liter twin-turbocharged inline-six, powering the F80 M3 and F82/F83 M4 from 2014 to 2018. It's…
4 months ago
BMW B38 Three-Cylinder — The Tiny Turbo Overview The B38 is BMW's 1.5-liter turbocharged three-cylinder, part of the modular engine family. It shares the 500cc-per-cylinder…
4 months ago
BMW S58 Engine — The G80 M3/M4 Twin-Turbo Powerhouse Overview The S58 is BMW M's latest 3.0-liter twin-turbocharged inline-six, debuting in the X3M/X4M (2019) and then the G80…
4 months ago
BMW N20 Engine — Technical Guide & Timing Chain Issue Overview The N20 is BMW's 2.0-liter turbocharged four-cylinder, produced 2011-2017. It replaced the naturally aspirated N52…
4 months ago
BMW Engine Swaps — What Fits Where Engine swaps are a time-honored BMW tradition. The modular engine design and shared platforms make many swaps surprisingly straightforward…
4 months ago
BMW N47 Diesel Engine — Timing Chain Failure Explained Overview The N47 is BMW's 2.0-liter four-cylinder turbodiesel, produced 2007-2014. It's a capable and efficient engine, but…
4 months ago
BMW S54 Engine — The E46 M3 Legend Overview The S54 is BMW M's 3.2-liter naturally aspirated inline-six, powering the E46 M3 (2000-2006). It's widely considered one of the…
4 months ago
BMW S65 V8 — The Only V8 M3 Engine Ever Made Overview The S65 is a 4.0-liter naturally aspirated V8 that powered the E90/E92/E93 M3 from 2007-2013. It's the only V8 ever fitted…
4 months ago
Stage 1 vs Stage 2 vs Stage 3 — What's the Difference? You'll see these terms everywhere in the BMW tuning world, but they're not standardized — different tuners define them…
4 months ago
BMW N74 V12 — The Last Twelve-Cylinder Overview The N74 is BMW's 6.6-liter twin-turbocharged V12, used exclusively in the 7 Series and Rolls-Royce models. It's the last V12 BMW…
4 months ago