🔥 Premium Engine Rebuild Kit for BMW N63B44 4.4L V8 Twin Turbo
Restore the power and reliability of your BMW V8 engine! This comprehensive overhaul kit is specifically engineered for the N63B44 (4395cc) and its variants (S63B44A, N63M20A). It addresses common failure points including oil consumption, oil leaks, bearing wear, and timing chain issues.
✅ Vehicle Compatibility
Please verify your engine code and VIN before purchasing. This kit fits:
-
X5 50i / xDrive50i: 2009-2018 (Chassis: E70, F15)
-
X6 50i / xDrive50i: 2007-2018 (Chassis: E71, F16)
-
550i / xDrive550i: 2010-2017 (Chassis: F10, F11)
-
650i / xDrive650i: 2011-2017 (Chassis: F06, F12)
-
750i / xDrive750i / 750Li: 2008-2015 (Chassis: F01, F02, F03)
📦 Package Includes (Complete Overhaul Set)
-
1 Set x Pistons & Piston Rings: High-strength aluminum alloy with optimized ring tension for superior compression and oil control.
-
1 Set x Overhaul Gasket Kit: Full set including head gaskets, valve cover gaskets, and oil pan gaskets. Upgraded materials to prevent common N63 oil leaks.
-
1 Set x Main & Connecting Rod Bearings: Precision-engineered bearings with enhanced oil film retention to prevent bearing failure and knocking.
-
1 Set x Timing Chain Kit w/ VVT Gears: Reinforced chains and improved VVT gears to eliminate timing rattle, stretch, and phase deviation.
🔧 OE Part Number Reference
Compatible with original part numbers:
11147574373, 11257556955, 11317567503, 11217576760, 11217576763, 11217576766, 11240150237
⚠️ Important Notes
-
Engine Variants: This kit is designed for N63B44A, S63B44A, and N63M20A engines. The N63 engine has undergone several revisions (TU). Please double-check your engine code to ensure 100% fitment.
-
Professional Installation: Engine rebuilding is a complex task. We strongly recommend installation by a certified mechanic experienced with BMW V8 engines. Follow BMW torque specifications strictly.
-
Cleanliness: Ensure the engine block and all mating surfaces are thoroughly cleaned before installation.
🛡️ Warranty & Support
-
1-Year Warranty: We stand behind our quality. Covers manufacturing defects (non-human damage).
-
Fitment Check: Unsure about compatibility? Send us your VIN (Vehicle Identification Number) via chat before ordering, and our team will verify it for you!
🚚 Shipping
- Fast & Secure Packaging
- Please allow 1-2 business days for order processing
| Year |
Make |
Model |
Engine |
| 2009-2018 |
BMW |
50iX (E70 F15) |
4.4L V8 Twin Turbo (N63B44) |
| 2007-2018 |
BMW |
50iX (E71 F16) |
4.4L V8 Twin Turbo (N63B44) |
| 2010-2017 |
BMW |
550i / 550iX (F10 F11) |
4.4L V8 Twin Turbo (N63B44) |
| 2011-2017 |
BMW |
650i / 650iX (F06 F12) |
4.4L V8 Twin Turbo (N63B44) |
| 2008-2015 |
BMW |
750i / 750Li (F01 F02 F03) |
4.4L V8 Twin Turbo (N63B44) |