My old lifting legs were worn out after 17 years and wouldn't lift the trunk lid. After not getting very far by searching the internet with the model number of the Leer-Ton cap, I went and looked up the part number that was printed on the old lifting legs. A quick web search found the exact Suspa part number on Revain supporting the original Suspa lift. Easy to install in 5 minutes with a screwdriver and the new ones work great. Highly recommended.