BMW M850i xDrive, sunset orange, 2019, N55, N54, N63, S85, B58, S63, S63TU, Engine, Replace, Repair, Rebuild, BuyBMW M4 N55 N54 N63 S63 S65 S85 B58 Engine Replace Repair Rebuild Reman Racing Stock Buy Now
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Core Return Instructions
To send us back your core to be inspected for a core refund, please provide your project manager with a pickup shipping address and the best email to send the bill of lading to. We need the long block with no accessories
Remanufacturing Overview Process
Our process starts by taking your core or a core and disassembling the core down to the bare block. Next, we process all parts through a “high pressure hot parts” washer, then the parts get cleaned via our ultrasonic industrial machine.
Ghassan Automotive Recommended Engine Break-in Procedure
One of the most critical parts of installing a remanufactured or rebuilt engine is the engine break-in, if ignored or done incorrectly, the engine may sustain irreversible damage.


See what others are saying

Charlie Rose

4 Reviews

3 Months Ago

I purchased an N55 G600 package in July of last year and provided a review at 250km.

Since installed, I have put 10,000km on the new engine and my experience has been amazing. Running as well as it did on day one. The engine has given me no issues whatsoever through my time of ownership and I couldn’t be happier with the results.

Thank you Ghassan Automotive!

N54 G800
Linda Trapani
United States

3 Reviews

2 Months Ago

Last year, the motor in my 335xi breathed its last, and I was forced to find an alternative. After months of searching, I finally settled on Ghassan's N54 g800.

Ghassan sent it out to my shop in CT and it was installed. Following the break-in period, I finally had the chance to see what it could do. I was blown away. My car has never run this well, ever. Even though I get my work done at a BMW-specific shop, they are still amazed by the build we've created.

Ghassan is using this motor to set records left and right, and I feel honored to have this same motor breathing new life into my car. I've had nothing but a positive experience with their customer service, and he personally replies to messages with any questions I have in the evolution of this build.

Thank you, and I'll be hitting you guys up soon for the TH400 :)

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