• 30777951 Main Bearing | Genuine Volvo Penta Part
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30777951 Main Bearing | Genuine Volvo Penta Part

30777951 Main Bearing | Genuine Volvo Penta Part

$38.20 AUD
$38.20 AUD
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Available from Volvo Penta international

Typically reaches our store in 10–14 business days

Availability checked daily with Volvo Penta

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

🔧 Product Description

Genuine Volvo Penta red-coded lower main bearing without flange, from the Engine group, weighing 0.045 kg and listed for 70 D series engine applications. It supersedes 31251378, and the workshop manual gives the selection procedure.

🚤 Compatibility

  • Engine Family: D
  • HP Range: 110-220 HP

Full model list at the end of this description.

⚙️ Key Features

  • Red colour code
  • Lower shell, without flange
  • 0.045 kg
  • Supersedes 31251378
  • 70 D series engine applications

🔌 Function

Provides the lower main bearing shell that carries the crankshaft in the block.

⚠️ Common Signs of Failure

  • Deep rumble from the bottom end under load
  • Low oil pressure, worst when hot
  • Overlay worn through to the shell backing
  • Metal debris in the oil and on the filter
  • Crankshaft main journals scored or out of round

🛠️ Service Notes

  • Four colour grades are catalogued here — red, yellow, blue and green — and the colour is the size grade, so the workshop manual selection procedure must be followed
  • These are lower shells without a flange; upper and flanged shells are separate parts
  • Main bearing failure usually points at oil supply, so find the cause before rebuilding

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 30777951 → Supersedes 31251378

OEM / Related Numbers

  • 31251378 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

  • Volvo Penta D3-110I-B, D3-110I-C, D3-130I-C, D3-220I-G, D3-130A-A, D3-160A-A, D3-130A-B, D3-160A-B, D3-130A-C, D3-160A-C, D3-140A-D, D3-170A-D, D3-200A-D, D3-220A-D, D3-140I-D, D3-140A-E, D3-170A-E, D3-200A-E, D3-220A-E, D3-140I-E, D3-140A-F, D3-170A-F, D3-200A-F, D3-220A-F, D3-140I-F, D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140I-G, D3-190A-B, D3-190A-C, D3-190I-A, D3-110I-A, D3-130I-A, D3-160I-A, D3-110I-D, D3-150I-D, D3-170I-D, D3-200I-D, D3-220I-D, D3-110I-E, D3-150I-E, D3-170I-E, D3-200I-E, D3-220I-E, D3-110I-F, D3-150I-F, D3-170I-F, D3-200I-F, D3-220I-F, D3-110I-G, D3-150I-G, D3-170I-G, D3-200I-G, D3-110I-H, D3-160I-C, D3-190I-B, D3-190I-C, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-130I-B, D3-160I-B, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H

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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