2012-2015 BMW 6 Series 4.4 Fuel Rail
Specifications
Donor year
2015
Fuel
Gas
Engine size
4.4 L
Engine code
N63TU
Engine type
4.4L V8 Twin-Turbo
Transmission
Automatic
Drivetrain
AWD
About this part
Also known as
Fuel Injection Rail
Injector Rail
High Pressure Fuel Rail
Fuel Delivery Pipe
Direct Injection Fuel Rail
What this part does
The fuel rail acts as a manifold to distribute high-pressure fuel from the high-pressure fuel pumps to the individual direct injectors. Mounted directly to the cylinder head of the engine, it ensures each injector receives a consistent volume of fuel at the exact pressure required for proper atomization. If a high pressure fuel rail develops a crack or a damaged fitting, it will cause a severe fuel leak, a noticeable smell of raw gas in the engine bay, sudden loss of fuel pressure, and multiple cylinder misfires.
Fits these vehicles
| Make | Model | Years | Engine |
|---|---|---|---|
| BMW | 650i, 650i xDrive (F06, F12, F13) | 2013-2018 | 4.4L V8 |
| BMW | 550i, 550i xDrive (F10) | 2014-2016 | 4.4L V8 |
| BMW | 750i, 750Li (F01, F02) | 2013-2015 | 4.4L V8 |
| BMW | X5 xDrive50i (F15) | 2014-2018 | 4.4L V8 |
| BMW | X6 xDrive50i (F16) | 2015-2019 | 4.4L V8 |
Before you order
The V8 engine utilizes two separate fuel rails—one for Bank 1 (passenger side, cylinders 1-4) and one for Bank 2 (driver side, cylinders 5-8). They have different shapes and line routing, so you must verify which side you are replacing. Inspect the threaded fittings on your high-pressure lines before installation, as cross-threading will ruin the rail. Always use new O-rings and hardware when reinstalling fuel system components to prevent dangerous high-pressure leaks.
