• 3978768 Inlet Valve | Genuine Volvo Penta Part
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3978768 Inlet Valve | Genuine Volvo Penta Part

3978768 Inlet Valve | Genuine Volvo Penta Part

$116.78 AUD
$116.78 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

Genuine Volvo Penta inlet valve from the Engine group, weighing 0.118 kg and listed for 15 applications across the TWD, TID, TD and TAD series. It supersedes part number 477447. The listing notes it is included in the exchange unit cylinder head. Exhaust valve 3978766 is the companion listing and is 23 grams heavier.

🚤 Compatibility

Typically suits:

  • Volvo Penta TWD710G
  • Volvo Penta TWD730ME
  • Volvo Penta TWD731VE
  • Volvo Penta TWD740GE
  • Volvo Penta TWD740VE
  • Volvo Penta TID71A
  • Volvo Penta TD730VE
  • Volvo Penta TD710G
  • Volvo Penta TD71A
  • Volvo Penta TD71ACE
  • Volvo Penta TD71AW
  • Volvo Penta TAD730G
  • Volvo Penta TAD730V
  • Volvo Penta TAD740GE
  • Volvo Penta TAD741GE
  • Engine Family: TWD, TID, TD, TAD

⚙️ Key Features

  • 0.118 kg
  • Supersedes 477447
  • Included in the exchange unit cylinder head
  • 15 applications across the TWD, TID, TD and TAD series
  • Companion exhaust valve is 3978766

🔌 Function

Seals the inlet port during compression and combustion, then opens to admit the incoming charge.

⚠️ Common Signs of Failure

  • Uneven idle and lower compression on one cylinder
  • Carbon build-up or a witness mark across the seating face
  • Stem worn or scored, with visible guide play
  • Bent stem after belt or timing trouble
  • Valve clearance drifting out of specification

🛠️ Service Notes

  • Not needed if an exchange cylinder head is being fitted — the note states the valve comes with it
  • Check the guide and seat with the valve, and reset clearances after assembly

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 3978768 → Supersedes 477447

OEM / Related Numbers

  • 477447 earlier number superseded by this part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.

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