[petebert]

Have a 2010 N51 Sulev.

Bosch website says 4470 for N51 "with Bosch unit".

4800 for N52 "with Delphi unit".

Realoem says Delphi 12138616153 which from what I can tell cross references to the 4800.

So which one do we go with?

[F806speed]

Originally Posted by petebert

Have a 2010 N51 Sulev.

Bosch website says 4470 for N51 "with Bosch unit".

4800 for N52 "with Delphi unit".

Realoem says Delphi 12138616153 which from what I can tell cross references to the 4800.

So which one do we go with?

Both look like they will work on your car according to fcp.

https://www.fcpeuro.com/BMW-parts/32...;d=1051&v=

[petebert]

So looks like Bosch and FCP Euro say to get the 4470. FCP Euro also lists that Delphi unit listed on realoem but from what I can see that part number cross references to the 4800.

I'd make it simple and just order the Delphi one but I'm trying to get it done today so I'm limited to what's available locally.

[bluewater328]

Delphi is what most recommend. Eldor is out there, but for the forced induction crowd.

[petebert]

Update: Pulled a coil pack, based on the date code it's original to the car. It was a Bosch 4470.