# 946672 Lock Nut | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta lock nut weighing 0.011 kg and listed for 120 applications across the MD, TMD, AQ, AD, AQAD and D series. It shares its published weight with lock nut 945989, which covers only 2 AQAD applications, so weight does not separate the two — order by part number and application.

## 🚤 Compatibility

-   **Engine Family:** MD, TMD, AQ, AD, AQAD, D, TD, BB, TAMD, MS, B, DP, SP, AQD

Full model list at the end of this description.

## ⚙️ Key Features

-   0.011 kg
-   120 applications across MD, TMD, AQ, AD, AQAD and D series engines
-   Same published weight as lock nut 945989 — order by number
-   2 used per assembly

## 🔌 Function

Locks onto a stud or screw and resists loosening under vibration.

## ⚠️ Common Signs of Failure

-   Nut running freely down the thread — the locking action is spent
-   Joint found loose or the fastener backed out
-   Flats rounded from repeated removal
-   Thread galled or picked up

## 🛠️ Service Notes

-   Renew rather than reuse once the nut turns freely by hand
-   Check the stud thread for pick-up before fitting

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 740B, 500A, 501A, 501B, 570A, 572A, 740A, 430A, 430B, 431A, 431B, 432A, 434A, 230A, 230B, 231LB, 250A, 250B, 251A, 271LB, 275A, 280B, 285A, 290A, 290DP, 570, 500B, 500, 571A, 430
-   Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-A, DP-A2, DP-B, DP-B1
-   Volvo Penta B230, B230E, B230F, B230FB, B230FX
-   Volvo Penta SP-C, SP-A2, SP-C1, SP-A, SP-A1
-   Volvo Penta AQ131A, AQ131B, AQ131C, AQ131D
-   Volvo Penta AQ271A, AQ271C, AQ271B, AQ271D
-   Volvo Penta BB225A, BB225AV, BB225B, BB225C
-   Volvo Penta AQ151A, AQ151B, AQ151C
-   Volvo Penta AQ225D, AQ225E, AQ225F
-   Volvo Penta BB260AV, BB260B, BB260C
-   Volvo Penta TMD40A, TMD40B, TMD40C
-   Volvo Penta AD31, AD31B
-   Volvo Penta AD41B, AD41BJ
-   Volvo Penta AQ145B, AQ145A
-   Volvo Penta AQ171A, AQ171C
-   Volvo Penta AQ200D, AQ200F
-   Volvo Penta AQ205LB, AQ205A
-   Volvo Penta AQ231A, AQ231B
-   Volvo Penta AQ260A, AQ260B
-   Volvo Penta AQ311A, AQ311B
-   Volvo Penta AQAD40B, AQAD40A
-   Volvo Penta MS3B, MS3C
-   Volvo Penta MS4B, MS4A
-   Volvo Penta TAMD31A, TAMD31B
-   Volvo Penta TAMD40A, TAMD40B
-   Volvo Penta TMD31A, TMD31B
-   Volvo Penta AD30A
-   Volvo Penta AD40B
-   Volvo Penta AQ175A
-   Volvo Penta AQ211A
-   Volvo Penta AQ290A
-   Volvo Penta AQAD30A
-   Volvo Penta AQD40A
-   Volvo Penta BB145A
-   Volvo Penta BB740A
-   Volvo Penta D41B
-   Volvo Penta MD30A
-   Volvo Penta MD31A
-   Volvo Penta MD40A
-   Volvo Penta TAMD30A
-   Volvo Penta TAMD41B
-   Volvo Penta TD31ACE
-   Volvo Penta TMD30A
-   Volvo Penta TMD41B

## Details

- **Price:** 3.49 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3.49 AUD | In stock |

## Images

- 946672 Lock Nut | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/946672-lock-nut-genuine-volvo-penta)
> Updated: 2026-09-06