21408944 Cooling Hose | Genuine Volvo Penta Part

🔧 Product Description

Moulded engine-coolant hose used in the turbocharger cooling circuit on specified Volvo Penta D13 marine propulsion, auxiliary and generating-set engines. It routes coolant through the water-cooled turbocharger installation and must be fitted in the correct orientation with the specified clamps.

🚤 Compatibility

• Engine Family: D

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta moulded turbocharger cooling hose
• Designed for the D13B and D13C cooling layout
• Carries engine coolant to or from the turbocharger circuit
• Correct bends prevent kinking and contact with hot exhaust components
• Engine type: Volvo Penta 12.8-litre inline six-cylinder marine diesel

🔌 Function

Circulates coolant through the turbocharger cooling connection to control bearing-housing and shutdown temperatures.

⚠️ Common Signs of Failure

• Coolant seepage around the hose or clamps
• Softening, swelling or surface cracking
• Coolant odour or unexplained coolant loss
• Localized overheating around the turbocharger
• Hose chafing or heat damage near exhaust components

🛠️ Service Notes

• Fit the hose dry onto clean, smooth stubs and push it fully onto the spigot so the clip lands behind the bead; do not use grease or sealant to help it on
• Keep the original routing and bend radius and use the correct clips, tightened evenly — a hose that is kinked, stretched or pulled to fit will fail early
• Check the stubs for corrosion, pitting and burrs while the hose is off, and clear any scale or debris out of the system
• Keep the hose away from hot surfaces and anything that can chafe it, and support long runs as they were originally clipped
• Refill, vent and run the engine to temperature, then re-check every joint and re-tighten the clips once the hose has bedded in

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21736501 - associated turbocharger
• 21514422 - associated turbocharger gasket references
• 22707542 - associated turbocharger gasket references
• 21160750 - associated pressure hose

OEM Reman Alternatives

• 3801374 - related remanufactured turbocharger references
• 3801495 - related remanufactured turbocharger references

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D13C3-B MH, D13C1-B MH, D13C4-B MH, D13C1-A MP, D13C3-A MP, D13B-E MG, D13B-E MG (FE), D13B-E MH, D13B-E MH (FE), D13B-F MG, D13B-F MG (FE), D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-M MP, D13C1-A MH, D13C2-A MH, D13C1-B MG, D13C3-B MG, D13C2-B MG, D13C4-B MG, D13C2-A MG, D13C1-A MG