This comprehensive kit is what you need to undertake the job from start to finish. Inlcudes: O-ring to rebuild the Vario Roof FRONT LOCK CYLINDER.....ROD SEAL A very useful Pick Set Tool Kit, for removing the old worn seals Hydraulic oil pump refill kit...for replacing lost fluid after you complete the installation in a clean very easy way 1 Liter of ZH-M......, 000 989 91 03 10.....Hydraulic Oil Installation instructions, guidelines links to online useful resources for every portion of the job The o-ring in the kit is an upgrade to the OEM seal, which is not capable of withstanding the aggressive/corrosive hydraulic fluids. The Nitrile Rubber compound used in this seal is exceptionally resistant to petroleum based oils, found in hydraulic fluids used in the Mercedes Benz convertible top hydraulic system. Fits the following vehicles built on the Mercedes R171 chassis: SLK200 Kompressor 2004 - 2008 SLK280 2005 - 2009 SLK300 2009 - 2011 SLK350 2004 - 2011 SLK55 AMG 2004 - 2011 A Comprehensive Multipage/Illustrated set of instructions are included. For repair of Mercedes Benz part numbers: 1718000072 Front Lock Cylinder) Please note returns are not accepted on opened bottles of oil...The cap seal must still be intact and not tampered with for a return to be accepted NOTE: THE SEALS IN THIS KIT ARE O-RING SEALS. Additional Details ------------------------------ Is autographed: false Is memorabilia: false Package quantity: 1