Discovered an oil leak from this plug which looks to have a hairline crack in it. Trying to identify the correct part to purchase. I've checked a parts interchange list for the TR650 and BMW G650GS and the TR650 part is listed as the anthracite one. Online catalogue for BMW G650GS the plug shows two options (item #4 in diagram below). one is described as anthracite, the other apparently not. I'll also order the o-ring (part #5). Local BMW dealer (Perth, Western Australia) does not have the anthracite one (11 14 7 228 356) come up one their system but does have the other one available for order. Anyone know if it matters whether the plug is anthracite or not ?
