Hi, I'm new to RS turbos!
What's the difference between a standard actuator, a -31, and a -34? How do you tell the difference?
Mine's knackered but I have a spare to go on, I was told the 1 fitted is -31 and the spare looks the same!
Thanks for any help.

 

"-31" is just the final part of the Garrett part number and it should read on the actuator. The one ending with -34 is rated for a slighty higher opening pressure.