Check the case pipe on your case to ensure it is the same as the pictures. If your watch has a male (external) thread on the case (old type), you will need a new crown & stem (the old type crowns are no longer available). If you need a new crown and stem to go with the middle case, follow the link below. If you need a new bezel follow the link below.Contact me for clarification if required. This is for a middle case, glass gasket & back cover o-ring. If you have any doubts contact me for clarification. The Watchmen is a watch sales and repair shop in Truro. The item "Genuine TAG Heuer Formula 1 WAC & CAC Models Middle Case, Watch Body, Brand New" is in sale since Monday, January 21, 2019. This item is in the category "Jewellery & Watches\Watches, Parts & Accessories\Parts, Tools & Guides\Parts\Other Watch Parts". The seller is "thewatchmen2015" and is located in Truro. This item can be shipped worldwide.