When I check Fast Lane and a couple of other WEB sellers who source thru World Pac, I see that 126 270 57 79 is not in stock.
Your old part 126 270 43 79 and the part on the box you received 126 270 91 79 both bring up the same photo with the same World Pac part # - J5020-102311, so one might be inclined to believe they are interchangeable. Parts get updated, but.....
The area around the base of the stem, the base itself and vacuum port design/location appear different. Is this a problem?
Hopefully M.B.Doc will drop in and confirm yea or nay.
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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"
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