# 849912 Hexagon Screw | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta hexagon screw for flywheel 3825678, weighing 0.132 kg and listed for 23 applications across TWD, TID, TAMD and TAD series engines. The flywheel it belongs to is the ordering detail.

## 🚤 Compatibility

-   **Engine Family:** TWD, TID, TAMD, TAD

Full model list at the end of this description.

## ⚙️ Key Features

-   For flywheel 3825678
-   0.132 kg
-   23 applications across four engine series
-   Flywheel fixing
-   14 used per assembly

## 🔌 Function

Clamps the flywheel to the crankshaft flange and carries the drive torque through its clamping force.

## ⚠️ Common Signs of Failure

-   Knock or rumble from the flywheel end that changes with load
-   Fretting rust or polished witness marks on the flange face
-   Screw threads stretched, necked or pulled
-   Head or drive faces rounded off
-   Flywheel run-out or wobble on strip-down

## 🛠️ Service Notes

-   Confirm the flywheel is 3825678 before ordering, as flywheel screws are specific to the assembly
-   Flywheel screws are highly stressed, so renew them as a full set rather than singly and tighten to the correct figure in the correct sequence
-   Check the crankshaft flange and flywheel faces are clean, dry and unmarked before assembly

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
-   Volvo Penta TID162AG, TID162AGP, TID162AP, TID162APB
-   Volvo Penta TAD1630G, TAD1630GE, TAD1630P
-   Volvo Penta TAMD165A, TAMD165C, TAMD165P
-   Volvo Penta TWD1630G, TWD1630P, TWD1630V
-   Volvo Penta TAD1631GE, TAD1631G
-   Volvo Penta TAMD163A-A, TAMD163P-A
-   Volvo Penta TWD1620G

## Details

- **Price:** 135.95 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 135.95 AUD | In stock |

## Images

- 849912 Hexagon Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/849912-hexagon-screw-genuine-volvo-penta)
> Updated: 2026-08-22