21615269 Voltage Regulator | Genuine Volvo Penta Part

🔧 Product Description

A compact electronic voltage regulator used in the designated Volvo Penta alternator to control charging-system output.

⚙️ Key Features

• Alternator field-current regulation
• Maintains stable battery-charging voltage
• Approximate component weight: 0.068kg
• Protects batteries and electrical equipment
• Alternator-specific connector and mounting profile

🔌 Function

The regulator adjusts alternator field current so charging voltage remains within specification as engine speed and electrical load change.

⚠️ Common Signs of Failure

• Low or excessive charging voltage
• Battery warning alarm
• Batteries overcharging or remaining discharged
• Intermittent output
• Burnt or corroded regulator terminals

🛠️ Service Notes

• Isolate the batteries at the main switch and disconnect the negative lead before working on the charging circuit, and never disconnect a battery while the engine is running
• Rule out the simple causes before condemning a regulator — a slack or glazed drive belt, corroded or loose battery and alternator connections, a poor engine-to-battery earth, or a tired battery all produce the same symptoms
• Check the brushes and slip rings while the regulator is off; a worn brush set gives the same low or erratic output
• Fit clean and dry, seat any insulating washers and bushes in their original order so nothing bridges across them, and tighten the terminals firmly without crushing them
• Measure charging voltage at the battery with the engine running once the regulator is fitted, and compare it with the value specified for your engine and battery type

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21615269 → Supersedes 21184083 → Supersedes 20798462

OEM / Related Numbers

• 21184083 earlier number superseded by this part
• 20798462 earlier number superseded by this part

📦 Condition

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