# 346918 Castle Nut | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta castle nut weighing 0.045 kg and listed for 143 applications across AQ, AQD, TD, TWD, TID and TMD series engines. It supersedes 343796, and the catalogue notes the split pin is not included.

## 🚤 Compatibility

-   **Engine Family:** AQ, AQD, TD, TWD, TID, TMD, BB, TAMD, D, THAMD, B, TAD, MD, MB

Full model list at the end of this description.

## ⚙️ Key Features

-   0.045 kg
-   Supersedes 343796
-   Split pin not included
-   143 applications across six engine series

## 🔌 Function

Clamps a joint and is locked in position by a split pin through its castellations.

## ⚠️ Common Signs of Failure

-   Split pin missing so the nut has worked loose
-   Castellations damaged or worn
-   Thread damage or corrosion
-   Joint working loose in service

## 🛠️ Service Notes

-   The split pin is NOT included, so order one separately — a castle nut without its pin is not secured
-   Always fit a new split pin; never reuse a removed one

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   346918 → Supersedes 343796

### OEM / Related Numbers

-   343796 earlier number superseded by this part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 TD61A, TD61ACE, TD61AG, TD61AGP, TD61AP, TD61APB, TD61AW
-   Volvo Penta TD70G, TD70B, TD70G-83, TD70GG, TD70GG-83, TD70GPP, TD70GPP-83
-   Volvo Penta TD71A, TD71ACE, TD71AG, TD71AGP, TD71AP, TD71APB, TD71AW
-   Volvo Penta TD60D-83, TD60A, TD60B, TD60D, TD60G, TD60DG-83
-   Volvo Penta AQD70B, AQD70BL, AQD70CL, AQD70D, AQD70C
-   Volvo Penta TD120A, TD120GG, TD120AG, TD120AG PP, TD120AK
-   Volvo Penta TID71A, TID71AG, TID71AGP, TID71AP, TID71APB
-   Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
-   Volvo Penta TAMD122A, TAMD122A/C, TAMD122D, TAMD122P-A
-   Volvo Penta TAMD70B, TAMD70E, TAMD70C, TAMD70D
-   Volvo Penta TD100G-85, TD100A, TD100AG, TD100G
-   Volvo Penta TWD1210G, TWD1210P, TWD1210PB, TWD1210V
-   Volvo Penta AQ170B, AQ170C, AQ170A
-   Volvo Penta BB115A, BB115B, BB115C
-   Volvo Penta BB170B, BB170C, BB170A
-   Volvo Penta D70B, D70B K, D70B PP
-   Volvo Penta MB20A, MB20B, MB20C
-   Volvo Penta TD121G-87, TD121GP, TD121GPB
-   Volvo Penta TID70G, TID70GG, TID70GPP
-   Volvo Penta TWD1211V, TWD1211P, TWD1211G
-   Volvo Penta TWD610P, TWD610PB, TWD610V
-   Volvo Penta TWD710P, TWD710PB, TWD710V
-   Volvo Penta AQ115A, AQ115B
-   Volvo Penta D100A, D100B
-   Volvo Penta D120A, D120AK
-   Volvo Penta 100S, 110S
-   Volvo Penta TAD730P, TAD730V
-   Volvo Penta TAMD102A, TAMD102D
-   Volvo Penta TD610M, TD610V
-   Volvo Penta TD630ME, TD630VE
-   Volvo Penta TD730ME, TD730VE
-   Volvo Penta THAMD70C, THAMD70B
-   Volvo Penta TID100K, TID100K-87
-   Volvo Penta TID60DG, TID60D
-   Volvo Penta TID61AG, TID61AGP
-   Volvo Penta TWD1230ME, TWD1230VE
-   Volvo Penta TWD630ME, TWD630VE
-   Volvo Penta AQ165A
-   Volvo Penta AQD21A
-   Volvo Penta B20
-   Volvo Penta BB165A
-   Volvo Penta MD21A
-   Volvo Penta TAD1230V
-   Volvo Penta TAMD103A
-   Volvo Penta TAMD121D
-   Volvo Penta TD1030VE
-   Volvo Penta TD1210G
-   Volvo Penta TD640VE
-   Volvo Penta TMD100C
-   Volvo Penta TMD102A
-   Volvo Penta TMD121C
-   Volvo Penta TMD122A
-   Volvo Penta TWD1030ME
-   Volvo Penta TWD1031VE
-   Volvo Penta TWD1231VE
-   Volvo Penta TWD730ME
-   Volvo Penta TWD731VE
-   Volvo Penta TWD740VE

## Details

- **Price:** 36.15 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 36.15 AUD | In stock |

## Images

- 346918 Castle Nut | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/346918-castle-nut-genuine-volvo-penta)
> Updated: 2026-09-18