# 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

## Details

- **Price:** 567.67 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 567.67 AUD | In stock |

## Images

- 21261350 Relay | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21261350-relay-genuine-volvo-penta)
> Updated: 2026-08-02