Volvo Penta exhaust elbow connector, Part Number 859836
This is the exhaust elbow or water injection elbow side connector. Exhaust elbows are a common cause of overheating and poor exhaust flow of water out of the transom. The elbow should be removed and checked for carbon build-up and rust every few years.
It is not uncommon for aftermarket non-genuine elbows to corrode quickly and in some cases, stainless ones can explode, due to poor casting.
Volvo Penta Part No: 859836
For: D2-50F, D2-55C, D2-55D, D2-55E, D2-55F, D2-60F
Exhaust elbow required, see part number 21424345