Volvo Penta D4 Exhaust Elbow connector screw, Part Number 984728
This is the exhaust elbow or water injection elbow connector screw. Exhaust elbows are a common cause of overheating and poor exhaust flow of water into the exhaust.
The exhaust and connectors on a D4 should be checked at least every 5 years by removing it and checking for carbon build-up and corrosion.
Volvo Penta Part No: 984728
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