1674165 Hub | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta hub is a machined fan-drive hub used in the rigid-fan hub assembly. It is manufactured to the original Volvo dimensional, material and interface requirements so the serviced assembly retains its designed alignment, sealing, load capacity and operating reliability. In service, it centres and transmits drive to the rigid cooling fan. Selection must be confirmed by OEM part number 1674165, the exact engine/product model, serial number and the installed assembly configuration.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD630ME
• Volvo Penta TWD730ME
• Volvo Penta TWD731VE
• Volvo Penta TID71A
• Volvo Penta TD730ME
• Volvo Penta TD730VE
• Volvo Penta TD71A
• Volvo Penta TD71AW
• Volvo Penta TD61A
• Volvo Penta TD61AW
• Volvo Penta TD630ME
• Volvo Penta TD630VE
• Volvo Penta TWD630VE
• Volvo Penta TD610M
• Volvo Penta TD610V

• Engine Family: TWD, TID, TD

⚙️ Key Features

• OEM Volvo Penta part number 1674165
• Late type M12 configuration
• System group: Cooling System
• Net weight 3.176 kg
• Supersedes earlier part numbers 1661997 and 1664000 (early type M10)
• Late-type update comprises this hub plus lever 1674166 and 3x screw 946473
• Fits TD, TID, TWD 61, 71, 610, 630 and 730 series marine diesel engines
• Also supersedes Volvo part number 476823

🔌 Function

The fan hub mounts and supports the cooling fan, allowing it to rotate on its bearing while being driven by the engine belt. It maintains correct fan alignment and running position so airflow through the radiator or heat exchanger remains effective.

⚠️ Common Signs of Failure

• Bearing noise, rumbling or squealing from the fan area while the engine is running
• Excessive play or wobble when the fan is moved by hand
• Fan runout causing belt misalignment, rapid belt wear or belt throwing
• Rising coolant temperatures due to reduced or unsteady fan speed
• Visible cracks, elongated bolt holes or damage at the mounting face

🛠️ Service Notes

• Get the hub off with the correct puller rather than levering or hammering it; a hub driven off or on is enough to damage the shaft, the bearing behind it and the hub itself
• Clean and inspect the shaft, keyway or taper and check for scoring, wear steps and fretting; a hub will not run true on a damaged seat and the fault will come straight back
• Inspect and renew the seal that runs on or behind the hub while access is good, and check the sealing surface for a wear groove
• Draw the hub on square, fully home to the position the workshop manual for your engine gives, and tighten the retaining fastener to the manual figure with any specified locking method
• Check the drive belt alignment and run-out after fitting, then run the engine and watch for wobble, noise or a belt tracking off to one side

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 1674165 → Supersedes 1661997

OEM / Related Numbers

• 1664000 earlier number superseded by this part
• 1661997 earlier number superseded by this part
• Rigid fan 3828620
• Spacer 1661363
• Pulley 466493
• Fan ring 6778467
• Sealing strip 1676375
• Washer 1674166

📦 Condition

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