# 21757071 Valve Spring | Genuine Volvo Penta Part

## 🔧 Product Description

Cylinder-head valve spring used for the inlet and exhaust valves on Volvo Penta D8 marine and TAD8 industrial engines. Twenty-four springs are normally used on a complete six-cylinder, four-valve-per-cylinder engine.

## 🚤 Compatibility

-   **Engine Family:** TAD, D, TADH

Full model list at the end of this description.

## ⚙️ Key Features

-   Valve spring from the Engine group
-   0.068 kg
-   Listed for 27 applications across TAD, D and TADH series engines

## 🔌 Function

Closes the inlet or exhaust valve and maintains contact between the valvetrain components.

## ⚠️ Common Signs of Failure

-   Reduced spring force
-   Broken coil
-   Valve float at high speed
-   Uneven valve clearance
-   Misfire or low compression

## 🛠️ Service Notes

-   Replace springs as a full set rather than singly, so that closing force stays even across the head
-   Check the valve stem seal and the collets while the spring is off, and renew the seal at the same time

## 🔄 Supersession & Cross Reference

### Other-Brand OEM Numbers

-   VOE21757071

### Aftermarket / Verified Equivalents

-   Inlet valve: 21528642
-   Marine inlet valve: 21614038 → 23038919
-   Exhaust valve: 21528644
-   Exhaust valve: 21528645

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A1-A MP, D8A3-A MP
-   Volvo Penta TAD840GE, TAD840-43VE, TAD840GE-B
-   Volvo Penta TAD570-72VE, TAD570-71VE-B
-   Volvo Penta TAD880-82GE, TAD880-84VE
-   Volvo Penta TADH880-82GE, TADH880-84VE
-   Volvo Penta TAD540-42VE
-   Volvo Penta TAD550-51VE
-   Volvo Penta TAD552VE
-   Volvo Penta TAD580-83VE
-   Volvo Penta TAD841-43GE
-   Volvo Penta TAD850-52VE
-   Volvo Penta TAD851-53GE
-   Volvo Penta TAD852VE-B
-   Volvo Penta TAD853VE
-   Volvo Penta TAD870-73VE

## Details

- **Price:** 25.56 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 25.56 AUD | In stock |

## Images

- 21757071 Valve Spring | Genuine Volvo Penta Part
- 21757071 Valve Spring | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21757071-valve-spring-genuine-volvo-penta)
> Updated: 2026-09-06