• 20366642 Plug | Genuine Volvo Penta Part
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20366642 Plug | Genuine Volvo Penta Part

20366642 Plug | Genuine Volvo Penta Part

$34.39 AUD
$34.39 AUD
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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

Genuine Volvo heavy-duty threaded plug used in shared Volvo transmission housings. The M26 × 1.5 plug closes a gearbox oil drain, fill or service opening and is used on AT, ATO and VTO transmission families rather than as a general engine-block plug.

🚤 Compatibility

Typically suits:

  • Volvo Penta EPT802
  • Engine Family: EPT

⚙️ Key Features

  • M26 × 1.5 transmission-housing plug
  • Heavy-duty machined steel construction
  • Used on Volvo AT, ATO and VTO gearbox families
  • Shared Renault Trucks reference 74 20 366 642
  • Engine type: Transmission component; not engine-specific

🔌 Function

Closes and seals the assigned gearbox oil drain, fill or service port.

⚠️ Common Signs of Failure

  • Transmission-oil leakage around the plug
  • Damaged or stripped M26 × 1.5 threads
  • Rounded plug head
  • Plug loosening in service
  • Damaged sealing face or washer

🛠️ 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

  • 74 20 366 642 - Renault Trucks reference
  • 88530903 - EuroRicambi reference
  • 88001764 - Eurotec reference
  • ZG.30486-0008 - related cross-reference

Aftermarket / Verified Equivalents

  • DT Spare Parts: 2.32316
  • EuroRicambi: 88530903
  • Eurotec: 88001764
  • Auger: 101652

📦 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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