# 20460088 Hexagon Screw | Genuine Volvo Penta Part

## 🔧 Product Description

High-strength hexagon screw used to secure the flywheel in transmission installations including documented Clark, HP and Steyr drive arrangements.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TD420VE
-   Volvo Penta TAD620VE
-   Volvo Penta TAD720VE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD722VE
-   Volvo Penta TAD734GE
-   Volvo Penta TAD420VE
-   Volvo Penta TAD520VE

-   **Engine Family:** TD, TAD
-   **HP Range:** Approximately 174-280 HP
-   **Year Range:** Approximately 1998 - 2006
-   **Serial Range:** SN-5310860899

## ⚙️ Key Features

-   Genuine Volvo Penta flywheel hexagon screw
-   Designed for the flywheel and transmission-adapter assembly
-   Direct service replacement for Volvo Penta part number 20460088
-   High-strength hexagon screw used to secure the flywheel in transmission installations including documented Clark, HP and Steyr drive arrangements
-   Ten screws are used on the documented flywheel installation
-   Engine type: Four- or six-cylinder turbocharged industrial diesel, model dependent
-   10 used per assembly

## 🔌 Function

Secures the flywheel to the crankshaft flange, carrying the full drive torque through friction between the clamped faces and holding the flywheel true so the transmission or drive adapter runs without runout.

## ⚠️ Common Signs of Failure

-   A heavy knock or rumble from the flywheel housing that changes with load
-   Vibration through the boat that comes and goes as drive is taken up
-   Bright fretting powder or rust bloom on the flywheel-to-crankshaft joint face
-   Screws found slack, or holes in the flywheel elongated where it has moved
-   Stretched shanks and pulled threads on removal, showing the screws have yielded

## 🛠️ 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

-   HP500 and Steyr 420AP adapter arrangements
-   20460193 - heavy-duty transmission flywheel
-   20460194 - transmission-adapter flywheel
-   20460195 - crankshaft torsional vibration damper
-   20460196 - flywheel adapter flange
-   20460089 - flywheel bearing flange
-   20460090 - flywheel adapter support bracket
-   20460091 - adapter stud
-   20460087 - flywheel retaining washer and screw
-   20460192 - flywheel-housing lock nut

### Other-Brand OEM Numbers

-   VOE20460088 - Volvo Construction Equipment prefixed number format
-   Clark 18-32000 / 34-36000 transmission arrangements

## 📦 Condition

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

## Details

- **Price:** 5.9 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5.90 AUD | In stock |

## Images

- 20460088 Hexagon Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20460088-hexagon-screw-genuine-volvo-penta)
> Updated: 2026-10-21