# 20460308 Adapter | Genuine Volvo Penta Part

## 🔧 Product Description

Machined 63.5mm-long adapter that positions the viscous fan clutch at the correct distance from the engine.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TD420VE
-   Volvo Penta TAD720VE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD722VE
-   Volvo Penta TAD420VE
-   Volvo Penta TAD520VE

-   **Engine Family:** TD, TAD
-   **HP Range:** Approximately 174-280 HP
-   **Year Range:** Approximately 1998 - 2006

## ⚙️ Key Features

-   Genuine Volvo Penta fan-clutch adapter - 63.5mm
-   Designed for the cooling-fan viscous drive
-   Direct service replacement for Volvo Penta part number 20460308
-   Machined 63.5mm-long adapter that positions the viscous fan clutch at the correct distance from the engine
-   Overall application length approximately 63.5mm
-   Engine type: Four- or six-cylinder turbocharged industrial diesel, model dependent
-   L=63.5mm (Volvo assembly listing)

## 🔌 Function

Machined 63.5mm-long adapter that positions the viscous fan clutch at the correct distance from the engine.

## ⚠️ Common Signs of Failure

-   Fan running out of line with the radiator or shroud, with tip contact marks
-   Vibration from the fan drive that comes on at particular engine speeds
-   Belt wearing on one flank because pulley alignment has drifted
-   Adapter mounting face fretted, or its bolt holes elongated on removal
-   Cracks starting around the fixing holes where the joint has been moving

## 🛠️ Service Notes

-   Clean and inspect every connection, renew disturbed seals and ensure the pipe is not forced into alignment
-   Refit all support clamps and verify clearance from heat sources, moving parts and sharp edges

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20460305 - application-dependent fan clutches
-   20460306 - application-dependent fan clutches
-   20460307 - temperature-controlled fan hub, flange layout 1
-   20460308 - 63.5mm and 107.5mm adapter variants
-   20460309 - M10 x 45 adapter screw
-   20460319 - fan mounting washer
-   990940 - fan mounting flange nut
-   20850090 - later adapter and pulley references on TAD650VE/TAD660VE installations

### Other-Brand OEM Numbers

-   VOE20460308 - Volvo Construction Equipment prefixed number format

## 📦 Condition

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

## Details

- **Price:** 1070.15 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1070.15 AUD | In stock |

## Images

- 20460308 Adapter | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20460308-adapter-genuine-volvo-penta)
> Updated: 2026-10-07