22821859 Starter Switch | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta starter switch weighing 0.118 kg, superseding part number 837437 and covering its 68 applications across MD, TMD, AQD, TD, D and TAMD series engines. Broad fitment makes it a practical stock item.

⚙️ Key Features

• Starter switch from the Starting System group
• 0.118 kg
• Supersedes part number 837437, catalogued earlier as a switch and as spare part references
• Covers the 68 applications recorded against the superseded number, across MD, TMD, AQD, TD, D and TAMD series engines
• Broad fitment across six engine series makes it a practical shelf item

🔌 Function

Makes and breaks the low-current circuit that energises the starter solenoid, so turning the key or pressing the button engages the starter without running the full starting current through the control.

⚠️ Common Signs of Failure

• Nothing happens on the key or button, with no click from the solenoid
• Starting works only if the key is jiggled or held at a particular point
• Hot or melted smell around the switch after repeated attempts
• Contacts burnt, pitted or welded when the switch is opened
• Terminals corroded or the switch body cracked so water has entered

🛠️ Service Notes

• Check the battery, main earth and solenoid feed before condemning the switch, since a flat battery gives the same silence
• Clean and protect the terminals on refitting, as damp is the usual cause of a switch that has failed early

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 22821859 → Supersedes 837437 → Supersedes 238762

OEM / Related Numbers

• 837437 earlier number superseded by this part
• 76533 earlier number superseded by this part
• 795118 earlier number superseded by this part
• 93589 earlier number superseded by this part
• 238762 earlier number superseded by this part

📦 Condition

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