vigil617
US Veteran
I recently added a 4553TSW to my collection of 3rd gen guns. I didn't know at the time that it used a nested pair of recoil springs that are now unavailable. It shoots fine but I would like to replace the recoil springs at some point. Wolff does not sell these. I suppose I could use the one they do sell for the 4516 in a pinch but would rather not. I called Wolff to ask whether they had any plans to expand spring support for the TSW lines or for 3rd gen guns in general and was told no. The lady I spoke to was a little testy on the phone. Maybe they are getting calls from us or maybe she was just having a bad day. Either way, I didn't get the impression that Wolff was real committed to the cause of keeping our pistols running. The lady didn't ask, but I for one would be willing to pay a premium for these springs. I definitely get the impression that a lot of other 3rd gen shooters would also pay for these increasingly hard to get items. Hope some enterprising spring maker, big or small, responds.
Mossy,
If the part numbers for your nested pair are as follows, they are the same ones spec'd for the 4516 and you should be able to use them in your 4553 TSW:
Factory spec'd nested dual counter wound spring set
pn: 108660000 outer 0.037wire x 22 coils
pn: 108670000 inner 0.032wire x 25 coils
These same springs are spec'd for 14 or so different models of compact .40 & .45 caliber pistols.
The italicized information has been provided by BMCM elsewhere regarding the 45xx series, and he's a pretty fair hand at these pistols, to understate it rather significantly.

Good luck with your springs. If you don't need any right away, keep watching the Semi-Autos section here for pending information from a spring supplier who is developing quotes on these springs right now. Hope we'll know something soon to be able to pass along.