# 21511566 Washer | Genuine Volvo Penta Part

## 🔧 Product Description

A hardened thrust and spacing washer used in the upper vertical-shaft gear and bearing assembly of the Volvo Penta DPH-D sterndrive.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta DPH-D1
-   Volvo Penta D6-330A-F
-   Volvo Penta D6-370A-F
-   Volvo Penta D4-260A-F
-   Volvo Penta D4-300A-F
-   Volvo Penta D6-300A-F
-   Volvo Penta D4-225A-F
-   Volvo Penta D6-300A-G
-   Volvo Penta D6-340A-G
-   Volvo Penta D6-380A-G
-   Volvo Penta DPH-E
-   Volvo Penta D6-400A-G
-   Volvo Penta D6-400A-F
-   Volvo Penta D4-150A-G
-   Volvo Penta D4-230A-G
-   Volvo Penta D4-270A-G
-   Volvo Penta D4-300A-G

-   **Engine Family:** DPH, D
-   **HP Range:** 150-400 HP

## ⚙️ Key Features

-   Upper vertical-shaft application
-   Supports ball bearing 181804
-   Works with selective shims 21511582, 21511584 and 21511586
-   Controls axial positioning
-   Hardened wear-resistant construction

## 🔌 Function

The washer provides the hardened thrust surface and base spacing used to establish the correct upper-shaft bearing and gear position.

## ⚠️ Common Signs of Failure

-   Scoring or heat discolouration
-   Excessive shaft end play
-   Gear noise
-   Washer distorted or worn
-   Incorrect bearing preload

## 🛠️ Service Notes

-   Check you are fitting the same type of washer that came out — plain, hardened, sealing and locking washers are not interchangeable, and the wrong one either fails to seal or fails to hold
-   Treat sealing washers on fuel, oil and coolant unions as single-use; they seal by deforming onto the faces, so a used one will not seal reliably a second time
-   Clean the seating faces and make sure the washer sits flat and square, fully under the head or nut, before tightening — a washer trapped on a chamfer or edge will crush unevenly
-   Tighten the fastener to the figure given in the workshop manual for your engine, and account for every washer on reassembly so none is left loose inside a housing or the engine bay

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   181804 - Ball bearing
-   21511582 - Selective shims
-   21511584 - Selective shims
-   21511586 - Selective shims
-   21821906 - Gear set
-   22050739 - Spacer tube
-   3849006 - Sliding sleeve
-   184778 - Needle roller bearing

## 📦 Condition

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

## Details

- **Price:** 180.57 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 180.57 AUD | In stock |

## Images

- 21511566 Washer | Genuine Volvo Penta Part
- 21511566 Washer | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21511566-washer-genuine-volvo-penta)
> Updated: 2026-10-10