Crankshaft oil seal

[Foofighters 27]

Hi I've got a renault 4 tl 1975,would anybody be able to tell me what size it would be ?????,as I I've been looking on de franzone there seems to be a few different sizes ,any help would be appreciated .
Thanks mark

 

[angel]

There is no crankshaft oil seal on the small engines (no seals at all in fact!).

 

[Foofighters 27]

Hi it's an 845 cc.?....