If it actually works, YES, save it. Even if it doesn't, YES, save it. According to Jay Leno's 3.5 video, MB actually rebuilds them. Unsure how accurate that is, but I am sure other companies do.

__________________
Current:
2021 Charger Scat Pack Widebody "Sinabee"
2018 Durango R/T

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
1999 Chrysler 300M - RIP @ 221k