• 11031769 Lock Washer | Genuine Volvo Penta Part
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11031769 Lock Washer | Genuine Volvo Penta Part

11031769 Lock Washer | Genuine Volvo Penta Part

$56.77 AUD
$56.77 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 lock washer from the Engine system group, used to secure a threaded fastener against loosening under vibration and thermal cycling. It is a service replacement item for D13 marine propulsion engines and TAD-series industrial and genset engines. Supplied as a single washer with a net weight of 0.064 kg.

🚤 Compatibility

  • Engine Family: D, TAD, TWD
  • Year Range: Approximately 1990s - 2010s

Full model list at the end of this description.

⚙️ Key Features

  • OEM Volvo Penta part number 11031769
  • System group: Engine
  • Net weight: 0.064 kg
  • Fits D13 marine engines plus TAD1200, TAD1300, TAD1600 and TWD1200 series industrial and genset engines
  • Supplied as an individual lock washer for fastener retention
  • Engine type: Volvo inline 6-cylinder turbo-diesel

🔌 Function

A lock washer sits under a nut or bolt head to maintain clamping tension and prevent the fastener from backing off under engine vibration and load cycling. Replacing it whenever the joint is disturbed helps preserve correct torque retention.

⚠️ Common Signs of Failure

  • Fastener found loose or backed off during inspection
  • Flattened, deformed or fatigued washer that no longer provides spring tension
  • Corrosion, pitting or scaling on the washer surface
  • Cracking or breakage of the washer, sometimes with fragments in the surrounding area
  • Fretting or wear marks on the mating surface indicating joint movement

🛠️ Service Notes

  • Lock washers are single-use: the spring or the lock is set by the first tightening, so fit a new one whenever the fastener is disturbed
  • Refit in the same arrangement as the parts came off, with the washer bearing on a clean, flat, undamaged seat
  • Where the washer is a tab or bent type, bend the tab firmly against a flat of the fastener after final tightening, and never bend the same tab back and forth twice
  • Tighten the fastener to the figure in the workshop manual for your engine — a lock washer secures a correctly tightened fastener, it does not compensate for a slack one

🔄 Supersession & Cross Reference

OEM / Related Numbers

  • 11031785 related flywheel-housing plug

Aftermarket / Verified Equivalents

  • SRP: LW-31769

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

  • Volvo Penta D13C2-B MP, D13C4-B MP, D13C5-B MP, D13C7-B MP, D13C8-B MP
  • Volvo Penta TAD1241GE, TAD1241VE, TAD1241-42VE
  • Volvo Penta TAD1242GE, TAD1242VE
  • Volvo Penta TAD1250VE, TAD1250-52VE
  • Volvo Penta TAD1643VE-B, TAD1643VE
  • Volvo Penta TAD1650VE-B/51VE, TAD1650VE
  • Volvo Penta TAD1240GE
  • Volvo Penta TAD1251VE
  • Volvo Penta TAD1252VE
  • Volvo Penta TAD1340VE
  • Volvo Penta TAD1341VE
  • Volvo Penta TAD1342VE
  • Volvo Penta TAD1343VE
  • Volvo Penta TAD1344VE
  • Volvo Penta TAD1345VE
  • Volvo Penta TAD1350VE
  • Volvo Penta TAD1351-53VE
  • Volvo Penta TAD1360-62VE
  • Volvo Penta TAD1363-65VE
  • Volvo Penta TAD1371-75VE
  • Volvo Penta TAD1380-82GE
  • Volvo Penta TAD1381-85VE
  • Volvo Penta TAD1384-85VE-IWP
  • Volvo Penta TAD1641VE
  • Volvo Penta TAD1642VE
  • Volvo Penta TAD1660-62VE
  • Volvo Penta TAD1662VE EU5
  • Volvo Penta TAD1670-72VE
  • Volvo Penta TWD1240VE

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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