2 Pcs Bonnet Gas Strut Lift Springs fits Mercedes Benz S SLK Class W221 R117

United Autoparts Gas Struts are the market' s premium replacement product.All products are 100% Tested, easy to fit with the use of simple hand tools and restore peace of mind and personal safety within minutes.

Turn off ignition. If old lift support has a window demister electrical connection, carefully disconnect the fittings.

Temperature Compensation Module Valve - Ensures consistent operation even in extreme weather conditions by compensating for normal gas pressure changes caused by temperature variations (not required in all units).

Have someone hold the hatch, bonnet, boot or rear window open while replacing the lift supports.(WARNING:DO NOT USE A PROP STICK).

The new lift support must be installed in the same position as the old one which was removed. Do not scratch the chrome rod.

Do not remove both lift supports at the same time. Replace one, then close and open the hatch/boot/bonnet and then remove and replace the second support.