21177136 Hot Water Outlet | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta hot water outlet listed for the D9 and D11, weighing 1.81 kg - the heaviest of the twelve hot water outlets listed here. The connection is made into the engine's cooling system so hot coolant can circulate through a water heater and provide a domestic hot water supply. The recommended hose between engine and water heater is 952969, the 16 mm bore, with stainless steel clips 961665, and the recommended domestic supply hose is 952968 at 12.7 mm with the same clips.

⚙️ Key Features

• Listed for D9 and D11 engines
• Recommended engine to heater hose 952969 with clips 961665
• Recommended domestic supply hose 952968 with clips 961665
• 1.81 kg
• Outlet only - hoses, vacuum valve and heater are separate
• Uses engine coolant heat to supply domestic hot water through a calorifier
• Fits: D9, D11

🔌 Function

Diverts a controlled portion of hot engine coolant through a domestic water heater and returns it to the cooling circuit.

⚠️ Common Signs of Failure

• Coolant leaking at the outlet connection
• No circulation through the water heater
• Air lock in the heater loop after filling
• Outlet fitting corroded or seized
• Coolant level falling as the heater circuit takes up or loses fluid

🛠️ Service Notes

• Order the hoses and clips separately - the outlet is listed on its own
• Bleed the heater loop after filling; the take-off sits high enough on most installations to trap air
• Recommended hose between engine and water heater is 952969, internal diameter 16 mm, with stainless steel hose clips 961665
• Recommended hose for the domestic supply is 952968, internal diameter 12.7 mm, with the same clips 961665

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21177136 → Supersedes 3817444

OEM / Related Numbers

• 3817444 earlier number superseded by this part

Other-Brand OEM Numbers

• VOE21177136

📦 Condition

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