• 78490804 Valve Cover | Genuine Volvo Penta Part
1 1

78490804 Valve Cover | Genuine Volvo Penta Part

78490804 Valve Cover | Genuine Volvo Penta Part

$1,918.94 AUD
$1,918.94 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

Genuine Volvo Penta valve cover from the Engine group, weighing 10.886 kg and listed for 18 applications in the D series. It supersedes part number 21454063. Valve cover 78490819 is the lighter alternative at 7.257 kg on 21 D series applications, so check which one your engine takes.

🚤 Compatibility

Typically suits:

  • Volvo Penta D6-340I-G
  • Volvo Penta D6-380I-G
  • Volvo Penta D6-440I-G
  • Volvo Penta D6-480I-G
  • Volvo Penta D6-300A-G
  • Volvo Penta D6-340A-G
  • Volvo Penta D6-380A-G
  • Volvo Penta D6-440I-WJ-G
  • Volvo Penta D6-480I-WJ-G
  • Volvo Penta D6-300D-G
  • Volvo Penta D6-340D-G
  • Volvo Penta D6-380D-G
  • Volvo Penta D6-440D-G
  • Volvo Penta D6-480D-G
  • Volvo Penta D6-400A-G
  • Volvo Penta D6-440A-G
  • Volvo Penta D6-300I-G
  • Volvo Penta D6-480A-G
  • Engine Family: D
  • HP Range: 300-480 HP

⚙️ Key Features

  • 10.886 kg
  • 18 D series applications
  • Supersedes 21454063
  • Heavier of a pair with valve cover 78490819 at 7.257 kg
  • Also supersedes Volvo part number 3583873

🔌 Function

Closes the top of the cylinder head over the valve gear, keeping oil in and dirt out.

⚠️ Common Signs of Failure

  • Oil weeping down the side of the cylinder head from the cover joint
  • Oil pooling in the gallery around the cover
  • Cover cracked, or a fixing boss broken
  • Sealing face distorted from over-tightening
  • Smell of hot oil after a run

🛠️ Service Notes

  • 78490819 is the other valve cover in this range and they are not interchangeable, so order by part number
  • Renew the cover gasket and any sealing washers, and tighten evenly to the specified figure rather than hard
  • Clean the crankcase breather path while the cover is off, as pressure behind a blocked breather pushes oil out at this joint

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 78490804 → Supersedes 21454063 → Supersedes 40005656 → Supersedes 3842801

OEM / Related Numbers

  • 21454063 earlier number superseded by this part
  • 40005656 earlier number superseded by this part

📦 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.

View full details