21872119 Level Sensor | Genuine Volvo Penta Part

🔧 Product Description

A genuine coolant level sensor installed in the expansion tank on Volvo Penta D13 and D16 diesel engines. The sensor monitors coolant level and provides a warning signal to the engine-control system. Requires conversion kit 21989777 when fitted.

🚤 Compatibility

• Engine Family: D
• HP Range: Approximately 0-500 HP
• Year Range: Approximately 2009 - 2021

Full model list at the end of this description.

⚙️ Key Features

• Factory-calibrated electrical characteristics
• Sealed engine-grade connector or housing
• Supports control, monitoring and protection functions
• Model- and software-specific operation where applicable
• Engine type: 12.8L inline six-cylinder turbocharged diesel

📋 Kit Contents

• Conversion kit 21989777 is needed

🔌 Function

Converts the assigned operating condition into an electrical signal or processes that signal for the engine-control, display and protection system.

⚠️ Common Signs of Failure

• Incorrect, unstable or missing data
• Implausible-signal or communication fault code
• Engine warning, derate or shutdown
• Open circuit, short circuit or internal electronic failure

🛠️ Service Notes

• Note the wiring and the sensor's orientation before removal, and isolate the circuit so nothing is live while the sender is out
• Check the float or probe moves freely through its full travel before fitting, and that nothing inside the tank or reservoir can foul it
• Seal the thread or flange as the installation specifies, and be sparing with sealant on a sender that earths through its body — an insulated sender reads nothing at all
• Do not over-tighten; these are thin-walled sensor bodies going into thin-walled tanks and housings
• Prove the installation end to end afterwards, confirming the gauge or alarm responds correctly at both ends of the range rather than assuming a new part must be good

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21872119 → Supersedes 23329793

OEM / Related Numbers

• 23329793 earlier number superseded by this part
• 21989777 - sensor conversion kit
• 3588990 - earlier coolant-level sensor references
• 21416784 - earlier coolant-level sensor references
• 21920930 - related expansion tanks
• 23127056 - related expansion tanks
• 23360152 - related expansion tanks
• 1674083 - pressure caps
• 23321023 - pressure caps

📦 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, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-A MP, D13B-H MP, D13B-G MP, D13B-L MP, D13B-E MG, D13B-E MG (FE), D13B-E MH, D13B-E MH (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-M MP, D13B-C MP, D13C4-B MP, D13C5-B MP, D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C1-B MG, D13C3-B MG, D13C5-A MP, D13C2-A MG, D13C1-A MG, D13C7-B MP, D13C8-B MP
• Volvo Penta D9A2J, D9A2G, D9A2L MH, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2M MP, D9A2A, D9A2C, D9A2E
• Volvo Penta D11B3-A MP, D11B4-A MP, D11A-A, D11A-B, D11A-C, D11A-E, D11B2-A MP, D11A-C MP, D11A-D MP, D11B1-A MP
• Volvo Penta D16C-A MG, D16C-A MH, D16C-B MH, D16C-C MH, D16C1-E MG, D16C1-F MG, D16C2-F MG, D16C-D MH, D16C1-E MH, D16C1-F MH