# 20793394 O-Ring | Genuine Volvo Penta Part

## 🔧 Product Description

Application-specific o-ring used in the piston, connecting-rod and crankshaft assembly on the listed Volvo Penta engines. Seals the specified piston, oil-nozzle or connecting-rod-related passage against oil leakage.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD560VE
-   Volvo Penta TAD561VE
-   Volvo Penta TAD750VE
-   Volvo Penta TAD752GE
-   Volvo Penta TAD753GE
-   Volvo Penta TAD760VE
-   Volvo Penta TAD765VE
-   Volvo Penta TAD764VE
-   Volvo Penta TAD763VE
-   Volvo Penta TAD762VE
-   Volvo Penta TAD761VE

-   **Engine Family:** TAD
-   **HP Range:** Approximately 180-320 HP
-   **Year Range:** Approximately 2004 - 2016

## ⚙️ Key Features

-   Genuine Volvo Penta o-ring
-   Seals the specified piston, oil-nozzle or connecting-rod-related passage against oil leakage
-   Connecting rod 20793636 is documented through engine serial 10564690; later production from serial 10564691 uses 21191452.
-   Engine type: 7-litre inline-six turbocharged industrial diesel

## 🔌 Function

Seals the specified piston, oil-nozzle or connecting-rod-related passage against oil leakage.

## ⚠️ Common Signs of Failure

-   Oil weeping from the sealed passage with staining inside the crankcase or on the block
-   Oil consumption rising or pressure dropping if oil escapes the intended passage
-   Piston-cooling performance falling away, showing as heat-related running complaints
-   On strip-down the ring is flattened, hardened or squared off in section
-   A cut, nick or twist mark showing the ring was pinched on assembly

## 🛠️ Service Notes

-   Use a new seal whenever the joint is disturbed.
-   Clean and inspect the mating surfaces and use only the specified lubricant or sealant.

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   20793394 → Supersedes 21003838

### OEM / Related Numbers

-   21003838 earlier number superseded by this part
-   20585982 - connecting rod
-   21191452 - later connecting-rod reference
-   11700325 - small-end bushing
-   11700326 - connecting-rod screws
-   20405577 - piston pin
-   20766790 - standard big-end bearing
-   20717211 - 0.25mm undersize big-end bearing
-   20565188 - 0.50mm undersize big-end bearing
-   20793531 - piston-ring set
-   20793619 - piston-cooling oil nozzle
-   20790423 - oversize big-end bearing kits
-   20790428 - oversize big-end bearing kits

### Other-Brand OEM Numbers

-   VOE20793394 - Volvo Construction Equipment prefixed number format

## 📦 Condition

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

## Details

- **Price:** 65.87 AUD
- **Vendor:** Volvo Penta
- **Type:** Gaskets & Seals
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 65.87 AUD | In stock |

## Images

- 20793394 O-Ring | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20793394-o-ring-genuine-volvo-penta)
> Updated: 2026-09-19