477901 Leak-Off Line | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta leak-off line from the Fuel System group, weighing 0.041 kg and listed for 16 applications across the TWD, TID, TD and TAD series.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD630ME
• Volvo Penta TWD710G
• Volvo Penta TWD710P
• Volvo Penta TWD710PB
• Volvo Penta TWD710V
• Volvo Penta TWD731VE
• Volvo Penta TID71A
• Volvo Penta TD730ME
• Volvo Penta TD730VE
• Volvo Penta TD710G
• Volvo Penta TD71A
• Volvo Penta TD630ME
• Volvo Penta TD610M
• Volvo Penta TAD730G
• Volvo Penta TAD730P
• Volvo Penta TAD730V

• Engine Family: TWD, TID, TD, TAD

⚙️ Key Features

• 0.041 kg
• 16 applications across the TWD, TID, TD and TAD series
• Fuel System return line
• Leak-off line 479690 is the other line in this range at 0.05 kg

🔌 Function

Returns the small volume of fuel that leaks past the injector needles back to the tank or return circuit.

⚠️ Common Signs of Failure

• Diesel weeping around the injector tops or under the rocker cover
• Fuel smell in the engine space after a run
• Hard starting or rough running as air enters the return circuit
• Line found cracked, chafed or hardened at a bend
• Sealing washers at the connections found flattened or leaking

🛠️ Service Notes

• Renew the sealing washers at every leak-off connection, as they are the usual source of the leak rather than the line itself
• Leak-off line 479690 covers a different set of applications at 0.05 kg, so check the fitment before ordering

📦 Condition

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