# 424920 Reducing Valve | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta reducing valve for the DH10A and THD102KD, from the Lubricating and Oil System group, weighing 0.524 kg and listed for 4 applications across the THD and DH engine series.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta THD102KB
-   Volvo Penta THD102KD
-   Volvo Penta THD102K-KB
-   Volvo Penta DH10A

-   **Engine Family:** THD, DH

## ⚙️ Key Features

-   For the DH10A and THD102KD
-   0.524 kg
-   4 applications on THD and DH engines

## 🔌 Function

Caps the pressure in its oil circuit by bleeding surplus flow away once the set pressure is reached.

## ⚠️ Common Signs of Failure

-   Oil pressure high when cold or low when hot
-   Gauge sitting steady at the wrong value
-   Valve seized, sticking or with a broken spring
-   Seat scored or debris trapped under the valve

## 🛠️ Service Notes

-   Listed for the DH10A and THD102KD
-   Check the pressure reading against the manual before condemning the valve, since a worn pump or bearing gives the same low reading

## 📦 Condition

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

## Details

- **Price:** 2032.23 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2032.23 AUD | In stock |

## Images

- 424920 Reducing Valve | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/424920-reducing-valve-genuine-volvo-penta)
> Updated: 2026-08-22