what is the distributor o ring, and rear main seal on 1995 Honda Civic

on estimate it says "Distributor cap leaking rear main seal. I couldn't find those parts in the description section

by in Westbrook, CT on June 02, 2009
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1 answer
ANSWER by , June 03, 2009
The distributor o ring is described here http://hondaswap.com/general-tech-maintenance/how-change-distributor-o-ring-81866/. The rear main seal is at the rear of the engine , where the crankshaft couples to the transmission. Incidentally a badly leaking distributor o ring can appear to be a leaking rear main seal since the distributor is located directly above the rear main seal.