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New engine intake flat seals suitable for motorcycle 50cc Derbi, Gilera, Aprilia, Cagiva motor Derbi Euro1, Euro2, Euro3 and Euro4 all years.
Technical characteristics and dimensions of the valve box seals
Wide fixing center distance: 60 mm
Fixing center distance height: 39 mm
Upper and lower seal
More details on engine reed valve seals Derbi
Engine valve gaskets Derbi Euro1, Euro2, Euro3 and Euro4 must be replaced when you change the valves of your 50cc motorcycle. These joints make your valves waterproof. You will have to install one before putting your valves then one after.
Assembly advice: Place the joints correctly. All holes must be in front of the crankcase threads. Tighten the valve screws enough to properly seal the seals.