Click to enlarge

6837090 Engine rebuilt kit Zundapp KS125 AC type 521-01 L0 15 HP

This kit is for engine type 285-10 L0 up to nr 4635164
without the extra ballbearing 6303 C3
The crankshaft bearing are the L20 type

The kit includes:

Ball bearingset, 6 pcs including 2 pcs L20 (20x47x12)
Oilsealset of 4 pcs
Gasketset complete
500ml original Zundapp gear oil