ML320 CDI Rear Sam knackered

[Mandymoo1968]

Hi All
Ok so I am no mechanic, I fact I am far from it, a middle aged woman that struggles to know where the fuel tank is when it needs fuel.....
So I need to buy a replacement rear SAM, as mine has drowned (sent off to be diagnosed). The unit is too damaged to be repaired.
I have looked at the usual eBay etc, they look the Same but appently Not compatible.
So my question is does the part number have to be identical ?
Any help really would be gratefully accepted.
I have attached a photo....I know right I even shocked myself...

 

[AMGeed]

This has matching Part # .
I have no idea if this is overpriced or not though?

MERCEDES BENZ W164 Ml Class Sam Engine Control Unit Rear A1649005101 for sale online | eBay

Find many great new & used options and get the best deals for MERCEDES BENZ W164 Ml Class Sam Engine Control Unit Rear A1649005101 at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

Edit. This one has the same part# if you scroll down and is cheaper.

Sam MODULE REAR FOR MERCEDES W164 X164 W251 ML Class 1649005401 High Quality | eBay

Code 848: Elektrische Fensterheber. Wenn der Fehlercode nach der Beseitigung gelöscht wird, kann er normal verwendet werden. Dieses Gerät muss mit dem installierten Diagnosegerät gemäß den Anweisungen auf dem Diagnosegerät codiert werden.

www.ebay.co.uk

It may be worth ringing Mercedes breakers like Dronsfields with the part number A164 900 51 01 to see if they have one.