How to read Briggs Parts List with Code Date?

[SnapperOwner]

B&S Vanguard V-Twin 23hp
Model 386777
Type 0111-E1
Code 0705241
Part 2690752
Purchased February 2009
Snapper YT2350 YT400 Series 50" Lawn Tractor (aka Riding Mower)

The Briggs Parts List shows a number of my parts as "Used After Code Date 09122300". How do I interpret that? Obviously, my engine is older than that. So, does it mean that the parts numbers are only for engines produced after Dec 2009?

 

[SnapperOwner]

The answer is "yes". Just went to the Briggs site and found an explanation. If the list says that the parts are only for engines produced after a certain date, then those parts will not work in your older model. Sorry to bother you, but maybe someone else will have the same question later.