3842034 Hose | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta hose for the run between the expansion tank and the coolant pump, from the Cooling System group, weighing 0.184 kg and listed for 6 applications on D series engines. It supersedes part number 3817253.

🚤 Compatibility

Typically suits:

• Volvo Penta D1-13
• Volvo Penta D1-13B
• Volvo Penta D1-13F
• Volvo Penta D1-20
• Volvo Penta D1-20B
• Volvo Penta D1-20F

• Engine Family: D
• HP Range: 13-20 HP

⚙️ Key Features

• Expansion tank to coolant pump hose
• 0.184 kg
• 6 applications on D series engines
• Supersedes 3817253

🔌 Function

Carries coolant between the expansion tank and the coolant pump inlet, keeping the pump fed and the system topped up.

⚠️ Common Signs of Failure

• Coolant level dropping with no obvious external leak
• Damp or crusted residue at either hose end
• Hose gone soft, spongy or swollen when squeezed
• Cracks in the rubber at the bends or clip positions
• Air drawn into the pump, giving noisy running and overheating

🛠️ Service Notes

• Renew the hose clips with the hose, since old clips rarely reseal on new rubber
• Check the expansion tank cap and its seal while the system is open
• Pressure test after refilling and bleed the system

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3842034 → Supersedes 3817253

OEM / Related Numbers

• 3817253 earlier number superseded by this part

📦 Condition

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