Generally
A rear crankshaft seal, in modern 2 part rubber design. It replaces the old original felt cord.
One problem that can arise is that the machining in the engine block and the cover is not made for a rubber seal, it is made for a felt cord PAC-5974. Check that the rubber crankshaft seal is properly in the groove and seals with a little pressure against the crankshaft. If it does not, you must fill the groove in the block and the cover with silicone glue, e.g. KEM-2072 or KEM-1234. Or you must use the original felt cord PAC-5974. This problem is very rare, we have not encountered it yet, but the manufacturer Best Gasket in the USA has encountered the problem and of course wants to pass it on and point it out, even though it is a rare problem.
Tip!
When installing the new seal, run a bead of silicone glue into the groove where the crankshaft seal sits. The groove is a little wider than the new seal, so it will be a little more stable installation if you glue the crankshaft seal.
One problem that can arise is that the machining in the engine block and the cover is not made for a rubber seal, it is made for a felt cord PAC-5974. Check that the rubber crankshaft seal is properly in the groove and seals with a little pressure against the crankshaft. If it does not, you must fill the groove in the block and the cover with silicone glue, e.g. KEM-2072 or KEM-1234. Or you must use the original felt cord PAC-5974. This problem is very rare, we have not encountered it yet, but the manufacturer Best Gasket in the USA has encountered the problem and of course wants to pass it on and point it out, even though it is a rare problem.
