I need to replace the gas spring in my arm rest. A search on the internet shows that this gas spring is an odd size (too small), and no one seems to stock it. The original spring was supplied by Lift-O-Mat. Here are the specs:

Extended: 11.0 cm (4-1/4") between hole centers
Retracted: 8.1 cm (3-1/8") between hole centers
Cylinder diameter: 12 mm (1/2")

Does anyone have a good source for this odd (small) sized spring?

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95 E320 Cabriolet, 159K