• 21661750 Expansion Tank | Genuine Volvo Penta Part
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21661750 Expansion Tank | Genuine Volvo Penta Part

21661750 Expansion Tank | Genuine Volvo Penta Part

$1,089.32 AUD
$1,089.32 AUD
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In stock — Australian warehouse

Typically reaches our store in 3–5 business days

Availability checked daily with Volvo Penta

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

🔧 Product Description

A pressurised coolant expansion tank used on Volvo Penta TAD5 and TAD7 industrial and generating-set engines.

🚤 Compatibility

Typically suits:

  • Volvo Penta TAD550GE
  • Volvo Penta TAD551GE
  • Volvo Penta TAD732GE EDC4
  • Volvo Penta TAD733GE EDC4
  • Volvo Penta TAD734GE
  • Volvo Penta TAD750GE
  • Volvo Penta TAD751GE
  • Volvo Penta TAD752GE
  • Volvo Penta TAD753GE
  • Volvo Penta TAD754GE
  • Volvo Penta TAD765VE
  • Volvo Penta TAD764VE
  • Volvo Penta TAD763VE
  • Volvo Penta TAD762VE
  • Volvo Penta TAD761VE
  • Engine Family: TAD

⚙️ Key Features

  • Coolant expansion and de-aeration tank
  • Integrated filler neck and level-sensor position
  • Designed for radiator-cooled engine packages
  • Correct hose and mounting connections
  • Used with cap 21661754 and cover 21661791

🔌 Function

The tank provides space for coolant expansion, separates trapped air and supplies coolant back to the engine as the system cools.

⚠️ Common Signs of Failure

  • Coolant leakage or staining
  • Cracked tank or mounting points
  • Repeated coolant loss
  • Air remaining in the cooling system
  • Damaged filler neck or level-sensor port

🛠️ Service Notes

  • Check the level cold with the engine stopped, and fill to between the level marks where the tank has them, or to the level given in the workshop manual for your engine — an overfilled system simply pushes coolant out past the cap as it warms
  • Use the coolant type and mix specified for your engine and top up with the same; mixing coolant types can destroy the corrosion protection the whole cooling system depends on
  • Inspect the tank for hairline cracks, crazing and staining around the seams and the hose spigots, and check the hoses and clips while you are there
  • Check the cap seal and that the cap both relieves and draws back properly — a cap that will not vent empties the tank, and one that will not let coolant return collapses a hose
  • Never release the cap on a hot pressurised system; let it cool first, and bleed and refill the system as the manual for your engine describes after any work

🔄 Supersession & Cross Reference

OEM / Related Numbers

  • 21661754 - Expansion-tank cap
  • 21661774 - Coolant level sensor
  • 21661791 - Tank cover
  • 21662524 - Related hoses
  • 21661157 - Related hoses
  • 21697494 - Related hoses
  • 21697495 - Related hoses
  • 21697516 - T-nipple

📦 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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