2014-2016 BMW 550i Engine (4.4L) For Sale

Up for sale is a high-performance 4.4-litre V8 engine compatible with the 2014–2016 BMW 550i models, using the N63B44O1 (or variant) twin-turbo design.
Key Specifications:

Engine Code (BMW twin-turbo V8 variant): N63B44O1.
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Displacement: 4.4 litres.
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Engine type: Twin-turbocharged Premium Unleaded V8.
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Power Output: Approximately 445 hp (for 2014 model) and around 480 lb-ft (≈650 Nm) of torque.
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Configuration: Suitable for 2014-2016 BMW 550i (F10/F11 generation) and other BMW models using the N63B44O1 engine.
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Condition Options:

Remanufactured long block: This unit has been re-machined or rebuilt to OEM standards with new components (pistons, rings, bearings, turbochargers, gaskets) and may include water pump, timing chain & tensioner installed.

Used / Core engine: Available as a used core with fewer guarantees but reduced cost.

Included / Not Included:

Included (depending on listing): Engine block + heads + internal components (crankshaft, rods, pistons, rings) — if remanufactured.

Not included (in many listings): Turbos (unless specified), flywheel/flexplate, external accessories (alternator, power-steering pump, AC compressor) depending on condition.

Please confirm what exactly is included in the sale to avoid surprises.

Warranty / Return Terms:

Many remanufactured engine sellers offer warranties (e.g., 12 months or more)—check the specific terms.

Core return may be required (if buying used) to validate warranty or get a discount.

Compatibility / Fitment Notes:

Intended primarily for the BMW 550i models from 2014-2016 with the 4.4 L N63 engine.

Ensure your vehicle’s chassis code (F10 sedan or F11 wagon) and engine code match this variant (N63B44O1) to guarantee correct fitment.

Verify mounts, wiring harness connectors, ECU compatibility, turbo accessory routing, as BMW twin-turbo V8s can have specific plumbing and electronics.

If you purchase a used engine, expect to inspect for condition of turbos, signs of carbon build-up, vacuum lines, oil leaks, and possibly replace timing chain kit and turbos for reliability.