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jonboy99 · 10-14-2026, 04:03 PM

I guess supersession means a part has been superseded by another. But when the parts fiche says supersession:[part number] does that mean the part number is the old superceded part or the part number of the new replacement?

Just been given the wrong part number yet again by my local dealer, and I need to give them the number of the new part, and specify I want exactly that.

In this case I ordered a new serp belt tensioner, and asked for 23769AA110 as per this parts fiche:
https://parts.subaru.com/p/Subaru_20...3769AA040.html

But I got given part 23769AA111, which doesn't fit.

However if I look at the parts fiche for the forester, the 2 parts appear interchangeable:
https://parts.subaru.com/p/Subaru__/...3769AA111.html

So - when I see:
Part Number: 23769AA040
Supersession(s): 23769AA110

Does it mean the current part is 23769AA040, and the old part is23769AA110, or is it the other way around?

Thanks!

10-14-2026, 04:03 PM	#1
jonboy99 Senior Member Join Date: Apr 2013 Drives: Black Panda BRZ Location: Norf London, innit Posts: 162 Thanks: 60 Thanked 37 Times in 29 Posts Mentioned: 0 Post(s)	Subaru parts fiches - supersession? I guess supersession means a part has been superseded by another. But when the parts fiche says supersession:[part number] does that mean the part number is the old superceded part or the part number of the new replacement? Just been given the wrong part number yet again by my local dealer, and I need to give them the number of the new part, and specify I want exactly that. In this case I ordered a new serp belt tensioner, and asked for 23769AA110 as per this parts fiche: https://parts.subaru.com/p/Subaru_20...3769AA040.html But I got given part 23769AA111, which doesn't fit. However if I look at the parts fiche for the forester, the 2 parts appear interchangeable: https://parts.subaru.com/p/Subaru__/...3769AA111.html So - when I see: Part Number: 23769AA040 Supersession(s): 23769AA110 Does it mean the current part is 23769AA040, and the old part is23769AA110, or is it the other way around? Thanks! Last edited by jonboy99; 10-14-2026 at 06:22 PM. Reason: Over agressive bolding I just couldn't live with.