# 20460506 Nut | Genuine Volvo Penta Part

## 🔧 Product Description

Retaining nut used at the engine-driven hydraulic/servo-oil pump or drive-gear assembly.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D5A-B TA
-   Volvo Penta D5A-T
-   Volvo Penta D5A-TA
-   Volvo Penta D7A-T
-   Volvo Penta MD2010
-   Volvo Penta MD2010B

-   **Engine Family:** D, MD
-   **HP Range:** Approximately 130-160 HP
-   **Year Range:** Approximately 1998 - 2006

## ⚙️ Key Features

-   Genuine Volvo Penta hydraulic-pump retaining nut
-   Designed for the engine-driven servo-oil / hydraulic pump
-   Direct service replacement for Volvo Penta part number 20460506
-   Retaining nut used at the engine-driven hydraulic/servo-oil pump or drive-gear assembly
-   Engine type: 4.0-litre four-cylinder turbocharged industrial diesel

## 🔌 Function

Retains the drive gear or coupling on the engine-driven hydraulic and servo-oil pump, clamping the assembly onto its shaft so drive torque is carried through the key and taper without the parts working loose.

## ⚠️ Common Signs of Failure

-   Heavy or unresponsive steering, or hydraulic function that fades under load
-   Knocking or rattling from the pump drive at idle
-   Nut found slack, with the drive gear able to rock on the shaft
-   Keyway or shaft nose worn and burred where the gear has been moving
-   Damaged or stripped shaft thread found on removal

## 🛠️ Service Notes

-   Confirm thread, length, grade and any single-use restriction against the exact application
-   Clean the threads and use the specified torque, angle and locking method

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20460510 - servo-oil pump
-   20460511 - Woodruff key, nut retainer and washer
-   20460512 - Woodruff key, nut retainer and washer
-   20460513 - Woodruff key, nut retainer and washer
-   20460515 - pump camshaft seal
-   20460516 - mounting gasket
-   20460514 - related gasket / service kit
-   20512174 - application drive-gear references
-   20555182 - application drive-gear references
-   20940389 - application drive-gear references
-   20460508 - retaining nut and six-point socket screw

### Other-Brand OEM Numbers

-   VOE20460506 - Volvo Construction Equipment prefixed number format

## 📦 Condition

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

## Details

- **Price:** 432.59 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 432.59 AUD | In stock |

## Images

- 20460506 Nut | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20460506-nut-genuine-volvo-penta)
> Updated: 2026-10-08