How To Replace A BMW Engine | Start To Finish

This is the complete engine replacement from my 2008 BMW E90 335i... from the very first bolt to the final installation. What started as a catastrophic N54 engine failure turned into the biggest project I've ever tackled on this channel. Instead of pulling the engine out from the top like most people do, I removed the entire drivetrain from underneath using a hydraulic lift table—engine, transmission, and front subframe all at once. Over the course of this project, I document every major step of replacing a BMW N54 engine, including drivetrain removal, engine teardown, transferring reusable components, installing brand new OE Mitsubishi turbochargers, replacing the rear main seal, verifying engine timing, refreshing Index 12 injectors with new Teflon seals, replacing the valve cover gasket, installing the water pump and thermostat, repairing the engine wiring harness, assembling the drivetrain, and finally reinstalling everything back into the car. This isn't a highlight reel or a time-lapse. It's the complete process—including the setbacks, specialty tools, torque procedures, and countless small details that most videos leave out. Whether you're replacing your own BMW engine, tackling an N54 project, or just enjoy watching massive automotive repairs, I hope this video helps you along the way. If you enjoy the video, consider subscribing and let me know what project you'd like to see next! BMW E46 GIVEAWAY SERIES PLAYLIST!!!    • Fix & Give Series - 2002 BMW 325CI   If you'd like to support the channel, consider becoming a member!    / @dayoffdiy   Or if Patreon is more your speed, we have one of those too!   / dayoffdiy   Venmo Donations https://account.venmo.com/u/dayoffdiy Cash App Donations https://cash.app/$DayOffDIY DAY OFF DIY Discord Link!   / discord   TOOLS USED Fluid Extractor https://amzn.to/4nkR081 Hydraulic Lift Table https://amzn.to/4nhjgrY Articulating Borescope https://amzn.to/42C9eIH Air Hammer Set https://amzn.to/42YVUhu 3/8" Digital Angle Torque Wrench https://amzn.to/4wypisy 1/2" Torque Wrench https://amzn.to/4vfDUvg 3/8" Angle Torque Wrench https://amzn.to/3PzPrqq 1/4" Torque Wrench https://amzn.to/4vcMs69 Wobble E-Torx Socket Set https://amzn.to/4uTbUxz N-Series Injector Slide Hammer https://amzn.to/4fvwZJM N-Series Injector Remover & Seal Compression Sleeves https://amzn.to/49sABsp Bore Brush Kit https://amzn.to/4dERwKX CTA Tools N-Series Crank Seal Tool (Front & Rear) https://amzn.to/43BpiKX CTA Tools N-Series Timing Tool Kit https://amzn.to/4u3o1qQ 1/4" Ball Torx Socket Set https://amzn.to/43Emi0o CTA Tools Extra Long 10mm Valve Cover Socket https://amzn.to/4dESczZ Crush Washer Metric Assortment https://amzn.to/4dVuU9a Vehicle: 2008 BMW E90 335i Engine: BMW N54 Twin Turbo Inline-6 #BMW #335i #N54 #E90 #EngineReplacement #DIY #BMWRepair