GM 24277116 1-2-3-4-5-6-Reverse Clutch Piston Return Spring Allison 10 Speed 2020+

Its always best practice to replace the piston return springs when rebuilding your Allison 10L1000. Returning fluid out of the clutch stack quickly is just as important as applying fluid control. This return spring is used in the 1-2-3-4-5-6-Reverse clutch. 

Incorrect removal or installation of this spring may result in failure.