# 20405896 Compression Spring | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Engine Oil Pressure Regulating Valve Spring - Part Number: 20405896

  

Genuine Volvo Penta compression spring used in the cylinder-block lubricating-oil pressure-control valve on TAD530GE and TAD531GE engines. It works with valve 20405936, sleeve 20405937, ring 20405904 and delivery valve 11700271.

  

⚙️ Key Features

  

• Calibrated oil-pressure control spring

• Installed in the cylinder-block pressure-regulating valve assembly

• Controls the opening force of valve 20405936

• Works with guide sleeve 20405937 and retaining ring 20405904

• Spring free length and load must meet the workshop specification

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20405896 - current Volvo Penta pressure-control spring reference

  

OEM / Related Numbers:

  

• 11700271 - delivery valve

• 20405904 - retaining ring

• 20405936 - regulating valve

• 20405937 - guide sleeve

• 20412745 - related cap plug

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta TAD5 engine-oil pressure regulating systems

  

Typically suits:

  

• Engine / equipment models:

• TAD530GE

• TAD531GE

  

• Engine Type: Volvo Penta 5-litre four-cylinder industrial diesel

• Year / Serial Range: Cylinder-block oil-control arrangement dependent

  

🔌 Function

  

Applies the calibrated closing force to the oil-pressure regulating valve so engine-oil pressure remains within specification.

  

Common signs of failure:

  

• Low or excessive engine-oil pressure

• Oil-pressure fluctuation

• Spring broken, distorted or weakened

• Valve opening at the wrong pressure

• Bearing damage caused by pressure-control failure

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 9.45 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 9.45 AUD | In stock |

## Images

- 20405896 Compression Spring | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20405896-compression-spring-genuine-volvo-penta)
> Updated: 2026-07-29