Does anyone know the difference in the in-line fuel filter both listed for
the 83.5 watercooled Vanagon?

The one in the bus now is a square plastic filter just before the the fuel
pump. (The 83.5 does not have a metal filter after the pump like the  84-85.)

ETKA shows 2 filters:

1HO 201 511-A
133 133 511

And there doesn't seem to be any distinction listed. Will they both work,  or
are they for two different set ups?

Thanks
Jeff
83.5 Westy
LA,CA