22850980 Heat Exchanger | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta shell-and-tube heat exchanger from the Cooling System group, weighing 5.162 kg and listed for three D series engine applications. It is within 5 grams of exchanger 22850982, so weight cannot separate them. It supersedes part number 21847335.

🚤 Compatibility

Typically suits:

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

• Engine Family: D
• HP Range: 20 HP

⚙️ Key Features

• Heat exchanger from the Cooling System group
• Shell-and-tube construction
• 5.162 kg
• Listed for three D series engine applications
• Within 5 grams of exchanger 22850982, so weight cannot separate them
• Supersedes part number 21847335

🔌 Function

Transfers heat from the engine coolant into the raw water passing through it, holding the engine at its working temperature while keeping the two circuits separate.

⚠️ Common Signs of Failure

• Temperature climbing under load and slow to come back down
• Coolant level dropping with no visible external leak
• Salt crust or weeping at the end cap joints
• Raw water side found packed with scale, weed or impeller debris
• Tubes perforated, letting sea water into the coolant side

🛠️ Service Notes

• 22850982 is within 5 grams of this and covers the same three engines - check parts list for your engine and order by number, not by weight
• Inspect the impeller and strainer whenever the stack is found blocked, and account for any missing impeller vanes
• Fit new end cap seals and O-rings when it goes back together

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 22850980 → Supersedes 21847335 → Supersedes 3840128

OEM / Related Numbers

• 21847335 earlier number superseded by this part
• 3840128 earlier number superseded by this part

📦 Condition

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