# 20933359 Oil Separator | Genuine Volvo Penta Part

## 🔧 Product Description

Filtration or separation component used in the tad550 cylinder-head valve-cover and oil-separation assembly. It removes contaminants or separated fluid before the protected system components.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD550GE
-   Volvo Penta TAD551GE
-   Volvo Penta TAD650VE
-   Volvo Penta TAD750GE
-   Volvo Penta TAD751GE

-   **Engine Family:** TAD
-   **HP Range:** Approximately 220 HP
-   **Year Range:** Approximately 2000s-2010s

## ⚙️ Key Features

-   Oil separator in the cylinder-head valve-cover assembly on TAD550
-   0.054 kg
-   Listed for 5 applications on TAD-series engines
-   Supersedes 20840827

## 🔌 Function

Separates entrained oil or liquid from crankcase vapour or fuel before the cleaned flow continues through the system.

## ⚠️ Common Signs of Failure

-   Oil carry-over into the intake or breather hose
-   Oil weeping around the valve cover joint
-   Crankcase pressure raised enough to push oil past seals
-   Separator element found blocked or perished on removal

## 🛠️ Service Notes

-   Oil separator 20930510 at 0.293 kg is the separate crankcase-ventilation unit - this one belongs to the valve-cover assembly
-   Renew the valve-cover gasket or seal when the separator is changed

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   20933359 → Supersedes 20840827 → Supersedes 20794434 → Supersedes 20849906

### OEM / Related Numbers

-   20840827 earlier number superseded by this part
-   20794434 earlier number superseded by this part
-   20849906 earlier number superseded by this part
-   20970527 cylinder head
-   21455723 valve cover
-   20412589 filler cap
-   20972267 valve-cover gasket
-   20840801 gasket
-   20933362 separator seal
-   949556 flange screw
-   11700334 cylinder-head cover screw

## 📦 Condition

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

## Details

- **Price:** 35.61 AUD
- **Vendor:** Volvo Penta
- **Type:** Filters
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 35.61 AUD | In stock |

## Images

- 20933359 Oil Separator | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20933359-oil-separator-genuine-volvo-penta)
> Updated: 2026-10-08