Plunger used on Data East, Sega, & Stern up/down post assemblies & lock assemblies.
Various Stern manuals show conflicting documentation for this part. Some manuals refer to it as 515-6119-04, others do not.
The important thing to note is the total length of the plunger; it is 5.53" long.
Please measure your plunger to insure this is the length you need.
DE/Sega/Stern #515-6119-03.