21165582 Adjusting Screw | Genuine Volvo Penta Part

🔧 Product Description

The internal retaining/adjusting screw for the eccentric cam inside the D13 flexible-impeller seawater pump. The cam bends the impeller vanes to create suction and discharge, so the screw must secure the cam without protruding into the rotating impeller path.

🚤 Compatibility

Typically suits:

• Volvo Penta D13C3-B MH
• Volvo Penta D13C1-B MH
• Volvo Penta D13B-E MG
• Volvo Penta D13B-E MG (FE)
• Volvo Penta D13B-E MH
• Volvo Penta D13B-E MH (FE)
• Volvo Penta D13B-N MH
• Volvo Penta D13B-N MH (FE)
• Volvo Penta D13C1-A MH
• Volvo Penta D13C1-B MG
• Volvo Penta D13C3-B MG
• Volvo Penta D13C1-A MG

• Engine Family: D

⚙️ Key Features

• Internal seawater-pump cam screw
• Works with cam 21165572
• Corrosion-resistant for seawater exposure
• Head and thread clear the rotating impeller
• Included in documented D13 seawater-pump wear-part sets
• Engine type: D13 seawater-pump assembly

🔌 Function

Secures and positions the pump cam that compresses the flexible impeller vanes and creates pumping action.

⚠️ Common Signs of Failure

• Loss of alignment or retention
• Abnormal noise, vibration or movement
• Leakage or damage at adjoining parts

🛠️ Service Notes

• Note and record the existing setting before disturbing anything, so you have a reference to return to if needed
• Release the lock nut fully before turning the screw, then reset the lock nut and re-check the setting — tightening the lock nut usually moves the adjustment
• Set to the clearance or position given in the workshop manual for your engine using the correct feeler or gauge; do not judge the setting by feel
• Inspect the tip and the threads and renew any screw with a worn, mushroomed or picked-up tip, because a worn tip makes the setting drift in service
• Never use an adjusting screw to force a component into position, and carry out a hot re-check after running if the manual for your engine calls for one

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21347696 - seawater-pump wear-part set references
• 23537699 - seawater-pump wear-part set references
• 21165572 - cam
• 3830663 - impeller references
• 3830459 - impeller references
• 21633538 - pump body
• 3829315 - shaft seal
• 925259 - O-ring
• 21541791 - end cover

📦 Condition

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