# 400797 O-Ring | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta O-ring weighing 9.1 grams and listed for 15 applications across the MD, TMD, TD, D and TAMD series engines. No system group, size or material is published against it, so match it by part number.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta MD100A
-   Volvo Penta MD100B
-   Volvo Penta TMD100A
-   Volvo Penta TD100AHC
-   Volvo Penta TD100ARC
-   Volvo Penta TMD100C
-   Volvo Penta TMD102A
-   Volvo Penta TD100CHC
-   Volvo Penta D100BHC
-   Volvo Penta D100BRC
-   Volvo Penta TD100CRC
-   Volvo Penta TAMD102A
-   Volvo Penta TAMD102D
-   Volvo Penta TAMD103A
-   Volvo Penta MD100B-CC

-   **Engine Family:** MD, TMD, TD, D, TAMD

## ⚙️ Key Features

-   9.1 grams
-   Listed for 15 applications across MD, TMD, TD, D and TAMD series engines
-   4 used per assembly

## 🔌 Function

Seals a joint between two parts by being squeezed into its groove, blocking the leak path.

## ⚠️ Common Signs of Failure

-   Weeping or seepage at the sealed joint
-   Ring flattened, nibbled or cut on one side
-   Ring hardened and taking a permanent set
-   Pressure or level loss from the assembly it seals

## 🛠️ Service Notes

-   O-rings are single-use, so fit a new one whenever the joint is broken
-   Lubricate the ring and check the groove for burrs that would nick it on assembly

## 📦 Condition

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

## Details

- **Price:** 40.08 AUD
- **Vendor:** Volvo Penta
- **Type:** Gaskets & Seals
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 40.08 AUD | In stock |

## Images

- 400797 O-Ring | Genuine Volvo Penta Part
- 400797 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/400797-o-ring-genuine-volvo-penta)
> Updated: 2026-10-07