If your Mercedes has developed a leak in the hydraulic actuator that locks your roof to the windshield, this is what you need to make a Long Lasting, Inexpensive and Easy repair. This 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. On a scale of 1-10, I would rate this task as a 4 being easy enough for DIYers. This is a guideline of how I completed the task. Fits the following vehicles built on the Mercedes R171: 2004-2008 Mercedes-Benz SLK200 Kompressor 2005-2009 Mercedes-Benz SLK280 2009- Mercedes-Benz SLK300 2004-2008 Mercedes-Benz SLK350 2004-2008 Mercedes-Benz SLK 55 AMG Item includes one Nitrile 70 rubber O-ring, a set of Picks and a Multi-page illustrated guideline. www..com | Cross Sell, Free Cross Sell, Cross promote, Marketing, listing Apps, Apps, Application PLEASE READ Shipping Alert Currently The United State Postal Service are experiencing delays with some mail deliveries, due to the current environmental situation, office closures, volume of mail and lack of transportation. Mainly associated with but not limited to First Class They have indicated to us that in some cases it's taking a minimum of 10 business days Please note if your package is delayed, which can be seen from the tracking number we provide, please be patient as it's not our fault. Also we advise you to use the tracking system on the USPS website as it's more accurate and up to date.