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This may have cropped up before, but just in case:
There are rubber doughnut couplings for sale on ebay, which although looking identical to the LR part, and also made by GKN, are not correct for the Discovery.
The items for sale are 5mm thicker than the genuine part and have a different part number moulded in the rubber.
Anyone trying to use these will run the risk of the bolt thread being too short to properly engage the locking section of the nuts, which may lead to the nuts coming off, with possibly damage or even an accident.
The new thicker one is 35mm thick and the part number is 249537. The old one is 30mm thick with a part number of 249782.
There is a mechanical solution, and that is to fit M12 X 70 bolts instead of the original M12 X 65 bolts. They must be High tensile and preferably Zinc Plated. A new set of locking nuts would be a good idea as well.
The thicker coupling will fit, and apart from a slight issue with the longer bolts and getting them in from the diff end, it all goes together OK. The propshaft has sufficient spare fore and aft movement to absorb the extra thickness, and probably 3/4" on top of that is available.
I have fitted one today, and it performs as expected and cured a vibration that we had at about 65mph.
Peter
There are rubber doughnut couplings for sale on ebay, which although looking identical to the LR part, and also made by GKN, are not correct for the Discovery.
The items for sale are 5mm thicker than the genuine part and have a different part number moulded in the rubber.
Anyone trying to use these will run the risk of the bolt thread being too short to properly engage the locking section of the nuts, which may lead to the nuts coming off, with possibly damage or even an accident.
The new thicker one is 35mm thick and the part number is 249537. The old one is 30mm thick with a part number of 249782.
There is a mechanical solution, and that is to fit M12 X 70 bolts instead of the original M12 X 65 bolts. They must be High tensile and preferably Zinc Plated. A new set of locking nuts would be a good idea as well.
The thicker coupling will fit, and apart from a slight issue with the longer bolts and getting them in from the diff end, it all goes together OK. The propshaft has sufficient spare fore and aft movement to absorb the extra thickness, and probably 3/4" on top of that is available.
I have fitted one today, and it performs as expected and cured a vibration that we had at about 65mph.
Peter
