You may've seen this but here's an ETKA or similar drawing for a US
market 1981 2.0:

image link: https://volkswagen.7zap.com/ImgsWatermark/images//Bilder/004/004010000.png

page with part numbers etc:

https://volkswagen.7zap.com/en/usa/vanagon/va/1981-4/1/115-10000/

Long shot theory: a poorly installed O ring at a push rod tube came
loose and fell into sump?

Or, O ring was installed at drain plug to help quell a leak? I'd
inspect the drain hole threads at case regardless.

Neil.

On 10/23/20, Geoffrey Toye <geoffreytoye@gmail.com> wrote:

> I am cleaning the oil strainer on a 2L Type IV motor in my 1981 Westie for
> the first time (under my ownership).  I bought a gasket set that includes
> the two large paper gaskets and the aluminum crush washer.  However, when I
> took the strainer off, in addition to the three gaskets I have in the kit a
> fourth rubber washer came out?  I am not sure where it came from but it
> came out with the strainer itself.  Also, it's split and I assume it should
> be replaced. Looking at the parts catalog I have I see no mention of it.
> Any
> ideas guys and girls where this goes?
>

-- 
Neil n

VE7TBN

1988 Westy 50º ABA swap: https://tinyurl.com/yap5hpwt

1981 Westy 15º ABA swap: https://tinyurl.com/y9n4xob8

VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>