21903541 Shutter | Genuine Volvo Penta Part

🔧 Product Description

Actuated shutter assembly used in a Volvo Penta marine propulsion airflow or exhaust-control system. The blade, shaft and housing are calibrated for the original actuator and control strategy; the complete engine product number determines fitment.

🚤 Compatibility

Typically suits:

• Volvo Penta IPS15-C
• Volvo Penta D8A2-A MP
• Volvo Penta D8A4-A MP
• Volvo Penta IPS15-B
• Volvo Penta IPS15-A
• Volvo Penta D8A8-A MP

• Engine Family: IPS, D

⚙️ Key Features

• Application-specific blade and housing
• Matched actuator / shaft interface
• Controls airflow or exhaust flow
• Designed for engine-control strategy
• Calibration and

🔌 Function

Regulates or closes an air/exhaust passage as commanded for engine control, shutdown, warm-up or emissions operation.

⚠️ Common Signs of Failure

• Sticking or restricted blade movement
• Actuator overload or position fault
• Reduced power or abnormal airflow
• Soot/oil deposits causing binding
• Air or exhaust leakage around the shaft and housing

🛠️ Service Notes

• This shutter's fitment spans both D8A-A MP engines and the matched IPS drive (IPS15-A/B/C) — confirm which one the boat has before ordering, since the same "shutter" description covers different actuator and housing combinations across this item type
• Check the pivot and any return spring or seal while it is apart, and confirm smooth full-travel movement of the blade before closing up

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 3887077 - separate Volvo Penta shutter reference
• 21416775 - other air-shutter references, not automatically interchangeable
• 22901159 - other air-shutter references, not automatically interchangeable
• 22853275 - other air-shutter references, not automatically interchangeable
• 22906604 - shutter-shaft reference

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging