# 955883 Castle Nut | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta castle nut of the early type, used together with screw 955692 and cotter pin 907834, weighing 0.01 kg and listed for 153 applications across the MD, TMD, AQ, AD, TAMD and AQAD families. It supersedes 951775.

## 🚤 Compatibility

-   **Engine Family:** MD, TMD, AQ, AD, TAMD, AQAD, D, BB, MS, B, DP, SP, HS, AQD, MB, KAD, KAMD

Full model list at the end of this description.

## ⚙️ Key Features

-   Early type
-   Used with screw 955692 and cotter pin 907834
-   0.01 kg
-   Supersedes 951775

## 🔌 Function

Retains a pin or shaft and is locked in place by a cotter pin passed through its slots.

## ⚠️ Common Signs of Failure

-   Cotter pin sheared, bent or missing
-   Slots spread or damaged where the pin passes
-   Play at the joint the nut retains
-   Thread stretched or pulled
-   Nut turning past the slot that lines up with the hole

## 🛠️ Service Notes

-   Always fit a new cotter pin 907834 - it is a single-use item and the whole point of the castle nut is that the pin cannot back out
-   Screw 955692 is the mating part in this joint

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   955883 → Supersedes 951775

### OEM / Related Numbers

-   951775 earlier number superseded by this part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 100S, 110S, 740B, 500A, 501A, 501B, 570A, 572A, 740A, 430A, 430B, 431A, 431B, 432A, 434A, 280B, 290DP, 570, 500B, 500, 430
-   Volvo Penta AD41P-B, AD41B, AD41D, AD41, AD41A, AD41BJ
-   Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-A, DP-A2
-   Volvo Penta AD31, AD31B, AD31D, AD31D-A, AD31XD
-   Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
-   Volvo Penta BB225A, BB225AV, BB225B, BB225C
-   Volvo Penta TAMD31M, TAMD31A, TAMD31B, TAMD31D
-   Volvo Penta TAMD41B, TAMD41D, TAMD41M-A, TAMD41A
-   Volvo Penta TAMD70B, TAMD70E, TAMD70C, TAMD70D
-   Volvo Penta AQ170B, AQ170C, AQ170A
-   Volvo Penta AQ225D, AQ225E, AQ225F
-   Volvo Penta BB115A, BB115B, BB115C
-   Volvo Penta BB170B, BB170C, BB170A
-   Volvo Penta BB260AV, BB260B, BB260C
-   Volvo Penta D41, D41B, D41D
-   Volvo Penta KAMD42A, KAMD42B, KAMD42P-A
-   Volvo Penta MB20A, MB20B, MB20C
-   Volvo Penta MD100A, MD100B, MD100B-CC
-   Volvo Penta SP-C, SP-A2, SP-C1
-   Volvo Penta TAMD60A, TAMD60B, TAMD60C
-   Volvo Penta TAMD72A, TAMD72P-A, TAMD72WJ-A
-   Volvo Penta TMD31A, TMD31B, TMD31D
-   Volvo Penta TMD40A, TMD40B, TMD40C
-   Volvo Penta TMD41A, TMD41B, TMD41D
-   Volvo Penta AQ115A, AQ115B
-   Volvo Penta AQ260A, AQ260B
-   Volvo Penta AQAD40B, AQAD40A
-   Volvo Penta AQD21A, AQD21B
-   Volvo Penta KAD42B, KAD42P-A
-   Volvo Penta MD21B, MD21A
-   Volvo Penta MD70B, MD70C
-   Volvo Penta MS3B, MS3C
-   Volvo Penta MS4B, MS4A
-   Volvo Penta TAMD40A, TAMD40B
-   Volvo Penta TAMD71B, TAMD71A
-   Volvo Penta AD30A
-   Volvo Penta AD40B
-   Volvo Penta AQ120B
-   Volvo Penta AQ125A
-   Volvo Penta AQ140A
-   Volvo Penta AQ145A
-   Volvo Penta AQ165A
-   Volvo Penta AQAD30A
-   Volvo Penta AQD40A
-   Volvo Penta B20
-   Volvo Penta BB140A
-   Volvo Penta BB145A
-   Volvo Penta BB165A
-   Volvo Penta BB231A
-   Volvo Penta BB261A
-   Volvo Penta BB740A
-   Volvo Penta HS1A
-   Volvo Penta MD120A
-   Volvo Penta MD30A
-   Volvo Penta MD31A
-   Volvo Penta MD40A
-   Volvo Penta TAMD30A
-   Volvo Penta TAMD42B
-   Volvo Penta TAMD61A
-   Volvo Penta TMD100A
-   Volvo Penta TMD120A
-   Volvo Penta TMD30A
-   Volvo Penta TMD70C

## Details

- **Price:** 138.04 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 138.04 AUD | In stock |

## Images

- 955883 Castle Nut | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/955883-castle-nut-genuine-volvo-penta)
> Updated: 2026-09-06