Alternator or Fuel pump: Which factory installed OEM part fails more often?

[idosubaru]

(Ignoring 00-04 fuel pump cap tab cracking and oring issues).  I’d guess alternator but have never kept track.  

Alternator sees more heat cycling, isn’t sitting in a “cooling fluid” (a tank of gas like a fuel pump), and it has more of a “computer” with the built in voltage regulator.  

I’ll ask my parts guy how many alternators vs fuel pumps are in the regional warehouse for fun. 

[Numbchux]

Alternator

 

 

In my years at Subaru dealerships, I can't remember the last time I've seen a fuel pump fail. There was a recall on them a few years ago. Sometimes we replace the whole assembly, but even that is usually due to rodent damage.

Alternators aren't exactly common either, but it happens.

 

 

Out of curiousity...I have a 2015 Outback VIN in my catalog right now. I have 2 alternators here, and there are 53 in the warehouses nationwide. I have zero fuel pumps or pump assemblies, and there are 4 assemblies in the warehouses nationwide. Now, that doesn't take into account fitment (if that part number for alternator fits a lot more cars than the fuel pump).

Edited June 10 by Numbchux

[idosubaru]

4 hours ago, Numbchux said:

Alternator

 

 

In my years at Subaru dealerships, I can't remember the last time I've seen a fuel pump fail. There was a recall on them a few years ago. Sometimes we replace the whole assembly, but even that is usually due to rodent damage.

Alternators aren't exactly common either, but it happens.

 

 

Out of curiousity...I have a 2015 Outback VIN in my catalog right now. I have 2 alternators here, and there are 53 in the warehouses nationwide. I have zero fuel pumps or pump assemblies, and there are 4 assemblies in the warehouses nationwide. Now, that doesn't take into account fitment (if that part number for alternator fits a lot more cars than the fuel pump).

Awesome. Thanks Chux, very much appreciated. 2016 is the year I’m currently thinking about so I might buy that same alt you looked up If I can’t find a low mileage used OEM. Currently 200,000 miles started life as a southern car, zero rust, in impeccable condition so there’s a decent chance of a lot more miles so I’ll likely replace the alt preemptively.