1664386 Hose | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta hose is a lubrication-system flexible hose used in the oil-cooler return hose. 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 returns engine oil between the oil cooler and adjoining lubrication-system pipework. Selection must be confirmed by OEM part number 1664386, the exact engine/product model, serial number and the installed assembly configuration.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD740GE
• Volvo Penta TWD740VE
• Volvo Penta TD640VE
• Volvo Penta TAD740GE
• Volvo Penta TAD741GE

• Engine Family: TWD, TD, TAD

⚙️ Key Features

• OEM Volvo Penta part number 1664386
• System group: Cooling System
• Net weight: 0.041 kg
• Fits TD640, TWD740, TAD740 and TAD741 series diesel engines
• Genuine Volvo Penta replacement component for the engine coolant circuit
• Quantity varies by assembly, most commonly one

🔌 Function

The hose transfers engine coolant between points in the cooling system, forming part of the sealed circuit that carries heat away from the engine. It maintains coolant flow and pressure containment along its section of the circuit.

⚠️ Common Signs of Failure

• Visible coolant seepage, drips or dried residue at the hose body or clamp joints
• Soft, spongy or swollen feel indicating internal degradation
• Cracking, hardening or surface crazing of the outer wall, particularly near the ends
• Collapsing or ballooning under operating pressure, restricting coolant flow
• Persistent low coolant level or engine running hotter than normal

🛠️ Service Notes

• Fit hoses only to clean, sound spigots — take off old rubber, scale and corrosion, and renew the spigot or pipe if it is pitted, because no clamp will seal a rough sealing face
• Push the hose fully home so the clamp sits behind the bead or barb rather than over the end of the spigot, and fit new clamps whenever a hose is renewed
• Let the hose follow its natural bend with no kinks and no tension on either connection, clear of hot surfaces and moving parts, with chafe protection wherever it passes a bracket, edge or bulkhead
• Use the correct grade of hose for the duty, and clamp to the standard the installation demands — twin clamps are normal practice on seawater and fuel connections below the waterline
• Refill, vent and run the engine, then check every joint hot and cold and recheck the clamps after the first running period as the hose beds down

🔄 Supersession & Cross Reference

OEM / Related Numbers

• Oil cooler 8192444
• Tube 3830180
• Tube 3830179

📦 Condition

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