# 3807909 Hydraulic Unit | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta hydraulic unit from the Starting System group, weighing 14.568 kg and listed for 9 applications across D and MD series engines. Hydraulic unit 3807910 carries the same name and the same applications but weighs 47 kg, so check the weight of what you are replacing.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D5A-B TA
-   Volvo Penta D5A-T
-   Volvo Penta D5A-TA
-   Volvo Penta D7A-B TA
-   Volvo Penta D7A-T
-   Volvo Penta D7A-TA
-   Volvo Penta D7C-TA
-   Volvo Penta MD2010
-   Volvo Penta MD2010B

-   **Engine Family:** D, MD

## ⚙️ Key Features

-   14.568 kg
-   9 applications across D and MD series engines
-   The lighter of the two hydraulic units, against 47 kg for 3807910

## 🔌 Function

Stores and delivers hydraulic pressure to crank the engine on a hydraulic starting system.

## ⚠️ Common Signs of Failure

-   Engine cranking slowly or not at all
-   Stored pressure bleeding away between starts
-   Hydraulic oil weeping from the unit or its hoses
-   Pressure not building while the charging pump runs
-   Groaning or knocking from the unit as it charges

## 🛠️ Service Notes

-   Discharge the stored pressure before disconnecting anything — the unit holds energy with the engine stopped
-   Check charge pressure and the hoses before condemning the unit
-   At 14.568 kg it needs proper support when it is handled

## 📦 Condition

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

## Details

- **Price:** 20304.8 AUD
- **Vendor:** Volvo Penta
- **Type:** Starters & Starting
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 20304.80 AUD | In stock |

## Images

- 3807909 Hydraulic Unit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3807909-hydraulic-unit-genuine-volvo-penta)
> Updated: 2026-10-10