Guangzhou Honghui Auto Parts Co., Ltd.
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B-M-W S63B44 engine X5M X6M M5 M6 4.4E71 V8 engine New remanufactured
| Parameter | Details |
|---|---|
| Displacement | 4,395 cc (4.4L V8) |
| Bore x Stroke | 89.0 mm x 88.3 mm |
| Compression Ratio | 10.0:1 |
| Power Output | 555–600+ hp (408–441 kW) – matches or exceeds original specs post-rebuild. |
| Torque | 680–750+ Nm (502–553 lb-ft) at 1,500–5,750 rpm. |
| Turbochargers | Rebuilt or upgraded twin twin-scroll turbos (1.2–1.5 bar boost). |
| Cooling System | Upgraded intercoolers, thermal management, and coolant lines. |
| Weight | ~205 kg (engine only). |
| Fluid Requirements | B-M-W-approved 5W-30/5W-40 synthetic oil and LL-01 coolant. |
| Category | Details |
|---|---|
| OEM+ Rebuild Standards | Rebuilt to exceed factory specs with upgraded components for enhanced durability. |
| Cost Savings | 40–60% cheaper than a brand-new B-M-W S63B44 engine. |
| Performance Restoration | Eliminates common issues (oil leaks, timing chain wear, turbo failure) for like-new power delivery. |
| Compatibility | Direct replacement for B-M-W M models using the S63B44 engine (2010–2018). |
| Precision Testing | Dyno-tested and calibrated to ensure OEM-level power, torque, and emissions compliance. |
| Sustainability | Eco-friendly remanufacturing process reduces waste vs. new production. |
| Plug-and-Play Fitment | Matches factory mounts, wiring, and connections; no modifications needed. |
| Tuning Readiness | Built to handle stage 1/2 tuning upgrades (e.g., ECU remaps, increased boost). |
BMW X5 M (F85): 2013–2018
BMW X6 M (F86): 2014–2019
BMW M5 (F10): 2011–2016
BMW M6 (F12/F13): 2012–2018
Engine Codes: S63B44 (N63-based, but with M-specific upgrades).
Description
Please note that all items labeled "used" have been used and may bear minor scratches and scuff marks. However,
they are fully functional and functional. We recommend viewing the pictures provided before purchasing to make sure
you are happy with the condition of the item.
All components are tested before or after they are removed from the vehicle. Please note that this part is a previously
installed second hand item. The items shown in the image are accurate items provided in this list, unless otherwise
stated in the item description.
Before making a purchase, make sure that the part codes and body panels you purchase match the parts of the vehicle
you are trying to repair.
Most electronic parts (ECUs, modules, headlights, etc.) may require coding/programming
If you need any additional parts, please contact us before placing your order. We will be more than happy to check if we
have any other items you may need. Discounts are available for multiple purchases.