# 20556016 Control Valve | Genuine Volvo Penta Part

## 🔧 Product Description

A genuine engine-brake control valve used on compatible Volvo D12-based installations. It controls the pneumatic or oil-actuated engine-brake circuit and must match the exact engine-brake configuration.

## ⚙️ Key Features

-   Calibrated for the documented rated-speed or engine-control configuration
-   Cross-referenced to Volvo 20508910/20564732 and Renault Group 7420913287/7424426572
-   Maintains commanded speed as engine load changes
-   Mechanical interfaces match the specified linkage and fuel-control travel
-   Engine type, serial number, rated power and governed rpm are required for correct selection
-   Final adjustment must follow the Volvo Penta governing procedure
-   Inspect linkage freedom, return springs and fuel-system condition before replacement
-   Engine type: Volvo Penta D12 inline-six industrial diesel

## 🔌 Function

Controls flow or pressure in the engine-brake or related control circuit.

## ⚠️ Common Signs of Failure

-   The engine brake weak, slow to apply, or not working at all
-   The brake staying partly applied, giving a rough idle and lost power
-   Hissing or an audible leak from the valve when the brake is commanded
-   A fault code raised against the engine-brake circuit
-   On strip-down, a sticking spool, perished seals or a blocked control drilling

## 🛠️ Service Notes

-   Supersedes 20450036
-   Check the control supply and the wiring before condemning the valve - a low supply pressure gives identical symptoms
-   Engine-brake configuration varies within the family, so confirm the valve against the engine number rather than by appearance

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   20556016 → Supersedes 20450036

### OEM / Related Numbers

-   20450036 earlier number superseded by this part
-   24426572 - Related exhaust-brake valve-block reference
-   20556032 - Related Bracket
-   20556179 - Related Shim
-   20556241 - Related Oil Pan
-   20508910 - Related Volvo exhaust-brake valve references
-   20564732 - Related Volvo exhaust-brake valve references
-   7420913287 - Related Renault/Volvo Group references
-   7424426572 - Related Renault/Volvo Group references

### Aftermarket / Verified Equivalents

-   DT Spare Parts: 2.14652

## 📦 Condition

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

## Details

- **Price:** 611.24 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Controls
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 611.24 AUD | In stock |

## Images

- 20556016 Control Valve | Genuine Volvo Penta Part
- 20556016 Control Valve | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20556016-control-valve-genuine-volvo-penta)
> Updated: 2026-10-10