• 21257393 Counterweight | Genuine Volvo Penta Part
  • 21257393 Counterweight | Genuine Volvo Penta Part - photo 2 of 2
1 2

21257393 Counterweight | Genuine Volvo Penta Part

21257393 Counterweight | Genuine Volvo Penta Part

$65.04 AUD
$65.04 AUD
Sale Sold out
Shipping calculated at checkout.

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 counterweight used in the balance-shaft assembly of Volvo Penta D4 marine diesel engines.

🚤 Compatibility

Typically suits:

  • Volvo Penta D4-260A-F
  • Volvo Penta D4-260D-F
  • Volvo Penta D4-260I-F
  • Volvo Penta D4-300A-F
  • Volvo Penta D4-300D-F
  • Volvo Penta D4-180I-F
  • Volvo Penta D4-225I-F
  • Volvo Penta D4-300I-F
  • Volvo Penta D4-225A-F
  • Volvo Penta D4-175I-G
  • Volvo Penta D4-230I-G
  • Volvo Penta D4-270I-G
  • Volvo Penta D4-320I-G
  • Volvo Penta D4-300I-G
  • Volvo Penta D4-150A-G
  • Volvo Penta D4-230A-G
  • Volvo Penta D4-270A-G
  • Volvo Penta D4-320A-G
  • Volvo Penta D4-300A-G
  • Volvo Penta D4-145I-G
  • Engine Family: D
  • HP Range: 145-320 HP

⚙️ Key Features

  • Genuine Volvo Penta counterweight
  • Precision-weighted engine balance component
  • Used with shaft 21511517
  • Reduces secondary engine vibration
  • Must be installed in the specified orientation
  • 4 used per assembly

🔌 Function

The counterweight rotates with the balance shaft to cancel vibration generated by the engine's reciprocating components.

⚠️ Common Signs of Failure

  • Increased engine vibration
  • Balance-shaft noise
  • Loose or damaged counterweight
  • Fretting around the mounting
  • Cracks
  • Incorrect installation timing or orientation

🛠️ Service Notes

  • Works with balance shaft 21511517 and is fitted four to an engine - keep the set matched and do not mix with another engine's parts
  • Fit in the specified orientation only; a reversed counterweight increases vibration instead of cancelling it
  • Note any timing or orientation marks before removal so the original position can be restored exactly

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 21257393 → Supersedes 3818297 → Supersedes 3582745

OEM / Related Numbers

  • 3818297 earlier number superseded by this part
  • 3582745 earlier number superseded by this part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