• 21261350 Relay | Genuine Volvo Penta Part
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21261350 Relay | Genuine Volvo Penta Part

21261350 Relay | Genuine Volvo Penta Part

$567.67 AUD
$567.67 AUD
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Available from Volvo Penta international

Typically reaches our store in 10–14 business days

Availability checked daily with Volvo Penta

✓ Authorised Volvo Penta Dealer · Genuine Volvo Penta parts · Ships Australia-wide

🔧 Product Description

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.

🚤 Compatibility

Typically suits:

  • Volvo Penta TD520GE
  • Volvo Penta TAD720GE
  • Volvo Penta TAD720VE
  • Volvo Penta TAD721GE
  • Volvo Penta TAD721VE
  • Volvo Penta TAD722GE
  • Volvo Penta TAD722VE
  • Volvo Penta TAD731GE MECH
  • Volvo Penta TAD731GE EDC4
  • Volvo Penta TAD732GE EDC4
  • Volvo Penta TAD733GE EDC4
  • Volvo Penta TAD734GE
  • Volvo Penta TAD520GE
  • Volvo Penta TAD520VE
  • Volvo Penta TAD530GE MECH
  • Volvo Penta TAD530GE EDC4
  • Volvo Penta TAD531GE MECH
  • Volvo Penta TAD531GE EDC4
  • Volvo Penta TAD532GE EDC4
  • Engine Family: TD, TAD

⚙️ 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

🔌 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

🛠️ Service Notes

  • Isolate the batteries before removing or fitting a relay, and note the connections as they come off
  • Fit like for like — coil voltage, contact rating, pin layout and any diode or resistor built across the coil must match the original, since a relay that plugs in is not necessarily the correct one
  • Check the base, socket and terminals for corrosion, spread or burnt contacts and confirm the supply and earth paths before condemning a relay; damp connections and poor earths cause more of these faults than the contacts themselves
  • Mount the relay in its original clip or holder so it stays secure and as dry as possible — vibration and moisture are the usual killers in a marine installation
  • On petrol installations, only ignition-protected electrical devices should be fitted in the engine space or fuel tank compartment, so use parts approved for that use

🔄 Supersession & Cross Reference

OEM / Related Numbers

  • 20998739 - 12V alternative; not interchangeable
  • 21261444 - Thermostat switch
  • 20998736 - Cable set
  • 20796993 - Related cable sets
  • 20796994 - Related cable sets
  • 947628 - Gasket
  • 20998750 - Adapter
  • 969011 - Gasket
  • 20573949 → 22288340 - Engine-heater reference chain
  • 20405599 - O-ring

📦 Condition

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

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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