20729344 Hose | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta formed cooling-system hose used on selected TAD16 generator-set engines. Its moulded profile provides the correct routing between cooling-system components without kinking or contacting adjacent hot or moving parts.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD1643GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TAD1640-42GE-B
• Volvo Penta TAD1640GE
• Volvo Penta TAD1640VE-B
• Volvo Penta TAD1641VE-B
• Volvo Penta TAD1642VE-B
• Volvo Penta TAD1641GE
• Volvo Penta TAD1642GE
• Volvo Penta TAD1641VE
• Volvo Penta TAD1642VE
• Volvo Penta TAD1643VE
• Volvo Penta TAD1650GE
• Volvo Penta TAD1651GE
• Volvo Penta TAD1650VE
• Volvo Penta TWD1663GE

• Engine Family: TWD, TAD

⚙️ Key Features

• Genuine moulded Volvo Penta coolant hose
• Engine-specific bends and connection lengths
• Designed for pressurised heavy-duty cooling systems
• Correct routing helps prevent chafing and flow restriction
• Serial-number confirmation is required before installation
• Engine type: 16-litre inline-six turbocharged and charge-air-cooled diesel generator engine

🔌 Function

Carries engine coolant between specified cooling-system components while maintaining a sealed, unrestricted flow path.

⚠️ Common Signs of Failure

• Coolant seepage at hose ends
• Bulging, softening or cracking
• Abrasion or chafe damage
• Coolant loss and elevated engine temperature

🛠️ 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 Supersession Chain

• 20729344 → Supersedes 20450286

OEM / Related Numbers

• 20450286 earlier number superseded by this part

📦 Condition

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