Have you had a Leak in one of the Hydraulic Cylinders that Raise, Lower Lock your Roof into place? Then you are going to have to refill/top up your hydraulic pump! This kit is what you will need! Includes Illustrated guideline Transfer Device Kit Does Not Include Hydraulic Pump or Hydraulic Oil For Use With The Following Vehicles built on the Mercedes R129 chassis....1989 - 2002 300SL, 300SL-24, 500SL, 600SL, SL280, SL320, SL500 SL600 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.