I recently replaced my sump gasket as part of a bigger job on my 2001 Thor.
I gave the sump a good clean out while it was off and removed the two rubber plugs in the process.
When I tried to refit them, there was no way they were going back in, they had swelled due to 20 years of oil exposure.
When I got the new ones, at first I thought they may have been the wrong ones as they were so much smaller than the ones I pulled out.
But sure enough, they fitted perfectly.
It's hard to believe just how much the old ones had swelled, no wonder I couldn't get them back in!
Part number ERR7229G if you are looking for them.
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