# 993664 O-Ring | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta O-ring weighing 0.007 kg and listed for 31 applications across the TAD, D and TADH engine series. O-ring 994041 covers the same three engine families on 21 applications, so where two O-rings could fit the same area, check the number against the position you are working on.

## 🚤 Compatibility

-   **Engine Family:** TAD, D, TADH

Full model list at the end of this description.

## ⚙️ Key Features

-   0.007 kg
-   Listed for 31 applications
-   Fits TAD, D and TADH series engines
-   Quantity varies by assembly, most commonly six

## 🔌 Function

Seals a joint by being compressed into its groove, closing the path between the two components.

## ⚠️ Common Signs of Failure

-   Seepage or a persistent damp film at the joint
-   Ring found flattened, nicked or twisted on removal
-   Rubber gone hard, chalky or swollen
-   Pressure bleeding away slowly with no other fault found

## 🛠️ Service Notes

-   Lubricate the ring and the lead-in chamfer before assembly so it does not shear or roll as it goes home
-   Inspect the groove and bore for scoring - a scratch across the sealing face will beat a new ring

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A1-A MP, D8A3-A MP
-   Volvo Penta TAD840GE, TAD840-43VE, TAD840GE-B
-   Volvo Penta TAD570-72VE, TAD570-71VE-B
-   Volvo Penta TAD880-82GE, TAD880-84VE
-   Volvo Penta TADH880-82GE, TADH880-84VE
-   Volvo Penta TAD1140-42VE
-   Volvo Penta TAD1150-52VE
-   Volvo Penta TAD1170-72VE
-   Volvo Penta TAD1180-83VE
-   Volvo Penta TAD540-42VE
-   Volvo Penta TAD550-51VE
-   Volvo Penta TAD552VE
-   Volvo Penta TAD580-83VE
-   Volvo Penta TAD841-43GE
-   Volvo Penta TAD850-52VE
-   Volvo Penta TAD851-53GE
-   Volvo Penta TAD852VE-B
-   Volvo Penta TAD853VE
-   Volvo Penta TAD870-73VE

## Details

- **Price:** 4.69 AUD
- **Vendor:** Volvo Penta
- **Type:** Gaskets & Seals
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4.69 AUD | In stock |

## Images

- 993664 O-Ring | Genuine Volvo Penta Part
- 993664 O-Ring | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/993664-o-ring-genuine-volvo-penta)
> Updated: 2026-10-08