855507 Tension Pulley | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta tension pulley from the Engine group, for engines up to serial number 2204208023, weighing 0.295 kg and listed for seven applications across AQ, KAD and KAMD series engines.

🚤 Compatibility

Typically suits:

• Volvo Penta AQ171A
• Volvo Penta AQ171C
• Volvo Penta 251A
• Volvo Penta KAD42A
• Volvo Penta KAD42B
• Volvo Penta KAMD42A
• Volvo Penta KAMD42B

• Engine Family: AQ, KAD, KAMD
• Serial Range: SN-2204208023

⚙️ Key Features

• For engines up to serial number 2204208023
• 0.295 kg
• Seven applications across AQ, KAD and KAMD series
• Belt tension pulley

🔌 Function

Runs against the belt to hold it at its set tension and to guide it around its path between the driven pulleys.

⚠️ Common Signs of Failure

• Rumbling or grinding from the belt run that changes with revs
• Roughness or play felt when the pulley is turned by hand
• Belt tracking off to one side or fraying at an edge
• Grease weeping from the bearing
• Belt tension falling away between checks

🛠️ Service Notes

• The serial number break is the ordering detail here - engines after 2204208023 take a different arrangement, so check the engine number first
• Renew the tooth belt at the same time; 855506 is the belt listed here for AQ engines
• Turn the new pulley by hand before fitting the belt - any notchiness now will be a failure later

📦 Condition

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