• 21666520 Plug | Genuine Volvo Penta Part
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21666520 Plug | Genuine Volvo Penta Part

21666520 Plug | Genuine Volvo Penta Part

$11.33 AUD
$11.33 AUD
Sale Sold out
Shipping calculated at checkout.

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 genuine threaded plug used in the coolant-duct and cylinder-block assembly on selected Volvo Penta D13, TAD13 and TWD16 engines. It closes a machined coolant or service passage and works with sealing ring 21024032.

🚤 Compatibility

  • Engine Family: D, TAD, TWD
  • HP Range: Approximately 0-500 HP
  • Year Range: Approximately 2009 - 2021

Full model list at the end of this description.

⚙️ Key Features

  • Genuine Volvo Penta coolant-passage plug
  • Used with sealing ring 21024032
  • Factory thread and seating profile
  • Direct replacement for a corroded or leaking original plug
  • Engine type: 12.8L inline six-cylinder turbocharged diesel

🔌 Function

Closes the specified coolant or machining passage and retains cooling-system pressure.

⚠️ Common Signs of Failure

  • Coolant seepage around the plug
  • Corroded or damaged threads
  • Plug loosening after incorrect installation
  • Seal hardening or extrusion
  • Coolant loss and overheating

🛠️ Service Notes

  • Clean the threads and the seating face before fitting, and make sure the opening itself is clear of old sealant, swarf and corrosion
  • Renew the sealing washer or O-ring where one is fitted rather than reusing a flattened one, and only use thread sealant where the workshop manual for your engine calls for it
  • Tighten to the figure given in the workshop manual for your engine — plugs in aluminium and other soft castings strip easily, and a plug pulled up hard to cure a leak usually distorts the seat and makes it worse
  • Where the plug closes an oil, fuel or coolant passage, run the engine up to temperature afterwards and check the joint under pressure before signing the job off
  • Keep removed plugs paired with the holes they came out of during a strip-down — plugs of very similar appearance often differ in thread, reach or sealing type

🔄 Supersession & Cross Reference

OEM / Related Numbers

  • 21024032 - sealing ring
  • 21677248 - coolant-duct cover
  • 21420523 - related cover
  • 20993042 - cylinder-block references
  • 23489240 - cylinder-block references
  • 21294062 - gasket
  • 20979871 - seal
  • 21046528 - clamp
  • 20532891 - gasket

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

  • Volvo Penta D16C1-E MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
  • Volvo Penta D13C4-B MH, D13C1-B MH, D13B-E MG, D13B-E MG (FE), D13B-N MH, D13B-N MH (FE)
  • Volvo Penta TAD1341-43GE-B, TAD1341VE, TAD1341GE
  • Volvo Penta TAD1344-45GE-B, TAD1344VE, TAD1344GE
  • Volvo Penta TAD1342VE, TAD1342GE
  • Volvo Penta TAD1343VE, TAD1343GE
  • Volvo Penta TAD1345GE, TAD1345VE
  • Volvo Penta TAD1350GE, TAD1350VE
  • Volvo Penta TAD1351GE, TAD1351-53VE
  • Volvo Penta TAD1340VE
  • Volvo Penta TAD1346GE
  • Volvo Penta TAD1352GE
  • Volvo Penta TAD1353GE
  • Volvo Penta TAD1354GE
  • Volvo Penta TAD1355GE
  • Volvo Penta TAD1360-62VE
  • Volvo Penta TAD1371-75VE
  • Volvo Penta TAD1643VE-B
  • Volvo Penta TAD1650VE-B/51VE
  • Volvo Penta TAD1670-72VE
  • Volvo Penta TWD1644-45GE
  • Volvo Penta TWD1672-1673GE
  • Volvo Penta TWD1682-83GE
  • Volvo Penta TWD1683VE

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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