# 3850601 Spanner Wrench | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta spanner wrench, published at 0.696 kg. Volvo's own special tools listing gives it a named job: removing and installing the vertical shaft bearing nut. It is classed as an overhaul tool. No jaw size or radius is published. The other hook spanner in our range, 3850604, weighs 1.819 kg, so the two are clearly different sizes even though neither size is published.

## ⚙️ Key Features

-   Listed by Volvo for removing and installing the vertical shaft bearing nut
-   Overhaul class tool
-   0.696 kg
-   The other hook spanner, 3850604, weighs 1.819 kg
-   No jaw size or radius published

## 🔌 Function

Engages the slot or notch in the vertical shaft bearing nut so it can be turned to torque without damaging the nut.

## ⚠️ Common Signs of Failure

-   Hook tip worn round so it jumps out of the slot
-   Bent or sprung shank
-   Cracks where the hook joins the body
-   Slots in the bearing nut chewed by a worn tool

## 🛠️ Service Notes

-   If the hook no longer sits square in the slot, replace it before it damages the bearing nut
-   Splined socket 884830 is the listed tool for turning the vertical shaft itself, which is a different job

## 📦 Condition

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

## Details

- **Price:** 700.23 AUD
- **Vendor:** Volvo Penta
- **Type:** Workshop Tools
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 700.23 AUD | In stock |

## Images

- 3850601 Spanner Wrench | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3850601-hook-spanner-genuine-volvo-penta)
> Updated: 2026-10-08