# 8194639 Timing Gear Casing | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta timing gear casing from the Engine group, weighing 21.062 kg and listed for 26 applications across the TAD, TD and TWD series engines. It supersedes part numbers 470646 and 479666, consolidating two earlier numbers into one. At over 21 kg it is the heaviest item listed here and needs proper handling and packing.

## 🚤 Compatibility

-   **Engine Family:** TAD, TD, TWD

Full model list at the end of this description.

## ⚙️ Key Features

-   21.062 kg
-   Supersedes 470646 and 479666
-   26 applications across TAD, TD and TWD engines
-   Engine group
-   Also supersedes Volvo part numbers 470147 and 470218

## 🔌 Function

Encloses the timing gear train, keeps its oil in and carries the seals and mountings for the drives at the front of the engine.

## ⚠️ Common Signs of Failure

-   Oil leak at the casing joint or around the front seal
-   Casing cracked or a mounting boss broken away
-   Sealing face damaged from a previous strip
-   Oil thrown around the front of the engine and onto the belt drive
-   Front seal running out of true because the casing is distorted

## 🛠️ Service Notes

-   Because it replaces two earlier numbers, check the mounting and seal arrangement against what is on the engine before fitting
-   Renew the front crankshaft seal and the casing gaskets while it is off, and check the timing marks before closing it up
-   The weight makes this a lifting job - plan handling and packing accordingly

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   8194639 → Supersedes 470646

### OEM / Related Numbers

-   479666 referenced in the part notes

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAD1030P, TAD1030G, TAD1030GE, TAD1030V
-   Volvo Penta TWD1210G, TWD1210P, TWD1210V
-   Volvo Penta TWD1211V, TWD1211P, TWD1211G
-   Volvo Penta TAD1031G, TAD1031GE
-   Volvo Penta TAD1230G, TAD1230V
-   Volvo Penta TD121G-87, TD121GP
-   Volvo Penta TWD1230ME, TWD1230VE
-   Volvo Penta TAD1032GE
-   Volvo Penta TAD1231GE
-   Volvo Penta TAD1232GE
-   Volvo Penta TD1030VE
-   Volvo Penta TD1210G
-   Volvo Penta TWD1030ME
-   Volvo Penta TWD1031VE
-   Volvo Penta TWD1231VE

## Details

- **Price:** 3050.08 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3050.08 AUD | In stock |

## Images

- 8194639 Timing Gear Casing | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8194639-timing-gear-casing-genuine-volvo-penta)
> Updated: 2026-09-06