Stop in for a cup of coffee

OK my slant oil pump has a long tube into the filter, all I see are ones with the shorter tube whats the difference?
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Dropped mine and cracked it looking for a new one.
Ouch!
Unscrew the fitting. The tube is pressed in.
Threads for the /6 nipples are not interchangle with the v-8s.

Long tube has a something to do with something or another.

Some marine v-8s have a tube length inbetween, and some have a spring loaded one way valve in them.