3838220 Pulley | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta pulley measuring 120 mm in diameter and fitted to engines from serial number 2160021109 onwards, from the Cooling System group. It weighs 6.97 kg, is listed for 4 applications across the TWD and TAD series, and supersedes part number 3825328.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD1620G
• Volvo Penta TWD1630G
• Volvo Penta TAD1630G
• Volvo Penta TAD1630GE

• Engine Family: TWD, TAD
• Serial Range: D=120mm, SN2160021109-

⚙️ Key Features

• 120 mm in diameter
• For engines from serial number 2160021109 onwards
• Supersedes 3825328
• 6.97 kg
• 4 applications across TWD and TAD series
• 120mm (Volvo assembly listing)

🔌 Function

Transmits belt drive to or from a cooling system component, holding the belt at the correct diameter and alignment.

⚠️ Common Signs of Failure

• Belt squeal or chirp that changes with engine speed
• Black belt dust collecting below the pulley
• Grooves worn shiny, glazed or stepped
• Visible wobble or run-out as the pulley turns
• Belt edges frayed, or the belt repeatedly thrown

🛠️ Service Notes

• Check the serial number of your engine before ordering — this diameter is listed from serial number 2160021109 onwards and the earlier build used a different pulley
• Renew the belt with the pulley and check alignment across the whole drive, or the new pulley will wear the same way
• Look for play in the bearing or shaft the pulley runs on before condemning the pulley itself

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3838220 → Supersedes 3825328

OEM / Related Numbers

• 3825328 earlier number superseded by this part

📦 Condition

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