# 20511492 Hexagon Screw | Genuine Volvo Penta Part

## 🔧 Product Description

This genuine Volvo Penta hexagon screw is an OEM service component used in the Cylinder-Block Mounting Screw. It is manufactured to the original Volvo Penta dimensional, material and interface requirements for the documented Volvo D7A industrial diesel application. Technical identification: Structural hexagon screw used in the D7 crankcase/cylinder-block assembly; Volvo function group 2129. In service, it provides the specified clamp load and mechanical retention for the associated assembly. Selection must be confirmed by OEM part number 20511492, the exact model/product number, serial number and installed assembly configuration.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TD420VE
-   Volvo Penta TAD420VE

-   **Engine Family:** TD, TAD

## ⚙️ Key Features

-   OEM part number 20511492
-   Technical distinction: Structural hexagon screw used in the D7 crankcase/cylinder-block assembly; Volvo function group 2129
-   2 used per assembly

## 🔌 Function

Provides the clamp load at its bolted joint on the D7 crankcase and cylinder block assembly.

## ⚠️ Common Signs of Failure

-   The joint the screw secures working loose or weeping
-   Screw found finger-slack on a routine check
-   Head corroded or rounded so a spanner will not bite
-   Stretched shank or a pulled thread found on removal

## 🛠️ Service Notes

-   Check the block thread for pulled or damaged threads before refitting

## 📦 Condition

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

## Details

- **Price:** 3.5 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3.50 AUD | In stock |

## Images

- 20511492 Hexagon Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20511492-hexagon-screw-genuine-volvo-penta)
> Updated: 2026-09-06