21261350 Relay | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 24V Engine-Heater Control Relay - Part Number: 21261350

Genuine 24-volt relay used in thermostatically controlled Volvo Penta engine-heater installations. It switches the high-current heater circuit in response to the thermostat switch and is used with the specified heater, cable sets, adapter and sealing components.

⚙️ Key Features

• 24V engine-heater switching relay

• Used with thermostat switch 21261444

• Designed for high-current heater loads

• Documented across TD5/TAD5 and TD7/TAD7 industrial engines

• 12V relay 20998739 is a different voltage version

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21261350 - Current 24V OEM relay reference

OEM / Related Numbers:

• 21261350

• 20998739 - 12V alternative; not interchangeable

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

Associated Service Parts:

• 21261444 - Thermostat switch

• 20998736 - Cable set

• 20796993 / 20796994 - Related cable sets

• 947628 - Gasket

• 20998750 - Adapter

• 969011 - Gasket

• 20573949 → 22288340 - Engine-heater reference chain

• 20405599 - O-ring

🚤 Compatibility

Documented applications include:

• TD520GE

• TAD520VE

• TAD530GE

• TAD531GE

• TAD532GE

• TD720GE

• TAD720GE

• TAD720VE

• TAD721VE

• TAD722VE

• TAD730GE

• TAD731GE

• TAD732GE

• TAD733GE

• TAD734GE

• TAD750GE

• TAD751GE

• TAD752GE

• TAD753GE

• TAD754GE

• System Voltage: 24V

• System: Thermostatically controlled engine coolant heater

• Confirm heater wattage, relay circuit and engine serial number

🔌 Function

The relay allows the low-current thermostat switch to control the high-current engine-heater circuit safely.

Common signs of failure:

• Engine heater not energising

• Heater remaining on continuously

• Relay clicking without supplying output

• Burnt or overheated terminals

• Voltage drop across closed relay contacts

• Blown fuse or melted wiring

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging