# 946781 O-Ring | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta o-ring for the MD11C/100S, including specification 867322, and for the MD17C/110S, listed for 8 applications on MD and AQD series engines. The engine specification is what selects it.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta MD1B
-   Volvo Penta MD2B
-   Volvo Penta MD3B
-   Volvo Penta MD11C
-   Volvo Penta MD11D
-   Volvo Penta AQD2B
-   Volvo Penta MD17C
-   Volvo Penta MD17D

-   **Engine Family:** MD, AQD

## ⚙️ Key Features

-   For the MD11C/100S, including specification 867322
-   For the MD17C/110S
-   8 applications on MD and AQD series engines

## 🔌 Function

Seals a static or slow-moving joint by squeezing into its groove.

## ⚠️ Common Signs of Failure

-   Weeping or dripping at the joint
-   Ring flattened, hardened or taking a permanent set
-   Nicks or a twist from assembly
-   Ring swollen or gone soft from the wrong fluid

## 🛠️ Service Notes

-   Check your engine specification number before ordering — that is what separates this ring from 946742, 946743 and 947789
-   Lubricate the ring and lead-in chamfer so it rolls into the groove

## 📦 Condition

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

## Details

- **Price:** 10.89 AUD
- **Vendor:** Volvo Penta
- **Type:** Gaskets & Seals
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 10.89 AUD | In stock |

## Images

- 946781 O-Ring | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/946781-o-ring-genuine-volvo-penta)
> Updated: 2026-09-06