Look at the driver side of the windshield and the vin# will be there. Post a photo.

 

 

Here are the parts you must order from a M/B dealer.

 

UPDATE ON THE SOLUTION OF MY CASE

FINALLY TRY OTHER ALTERNATORS SAME PROBLEM. CHANGE ALL POSITIVE BATTERY CABLES TO ALTERNATOR, ALSO TO STARTER. VERIFY REGULATOR ETC A COMPLETE ASSESMENT OF THE CURRENT FLOW EVERITHING SEEMS TO BE WORKING AS IT SUPPOSE TO BE, BUT THE VOLTAGE CONTINUE TO DROP DOWN AND BATTERY DRAIN OUT.

UNTIL FINALLY WE VERIFY WITH MULTIMETER THE GROUND AND GUESS WHAT?....THE CABLE WAS DAMAGE AT SOME POINT. sO THE CABLE FABRICATED CUSTOM FOR THIS ISSUE. AND NOW VOLTAGE RUNS STABLE AT 14.6v WITHOUT DROPPING AND EVERITHING WORKING RIGTH.

THANKS A LOT TO EVERYONE ON THIS ISSUE.