# 21643849 Spacer Sleeve | Genuine Volvo Penta Part

## 🔧 Product Description

Machined distance sleeve used in the D3 inboard reverse-gear coupling assembly. It establishes the correct coupling position and bearing or flange spacing between the engine flywheel, shaft and transmission components.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D3-220I-G
-   Volvo Penta D3-140I-G
-   Volvo Penta D3-110I-G
-   Volvo Penta D3-150I-G
-   Volvo Penta D3-170I-G
-   Volvo Penta D3-200I-G
-   Volvo Penta D3-110I-H
-   Volvo Penta D3-150I-H
-   Volvo Penta D3-170I-H
-   Volvo Penta D3-200I-H
-   Volvo Penta D3-220I-H
-   Volvo Penta D3-140I-H

-   **Engine Family:** D
-   **HP Range:** 110-220 HP

## ⚙️ Key Features

-   Genuine Volvo Penta coupling spacer
-   D3 inboard reverse-gear application
-   Controls axial spacing and alignment
-   Precision machined faces
-   Suitable for D/E/F/G production families where catalogued

## 🔌 Function

Maintains the designed axial position and alignment between the flywheel coupling and reverse-gear input assembly.

## ⚠️ Common Signs of Failure

-   Coupling misalignment
-   Fretting or worn spacer faces
-   Incorrect end play
-   Abnormal noise after coupling service

## 🛠️ Service Notes

-   A spacer sleeve sets a fixed length in the joint — never leave one out, shorten one, or substitute a stack of washers, or the clamping load and alignment will both be wrong
-   Check that the sleeve is square and fully seated in its counterbore or recess before any fastener is tightened
-   Discard a sleeve that is crushed, bell-mouthed, scored or corroded; a shortened sleeve lets the joint be over-clamped and the component distorted
-   On sleeves in an oil circuit, make sure the bore is clear and that any seal running on the sleeve has a clean, unscored surface to work against
-   Tighten the joint to the figure in the workshop manual for your engine, with the sleeve taking the clamping load rather than the component it protects

## 🔄 Supersession & Cross Reference

### Other-Brand OEM Numbers

-   VOE21643849

## 📦 Condition

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

## Details

- **Price:** 143.09 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 143.09 AUD | In stock |

## Images

- 21643849 Spacer Sleeve | Genuine Volvo Penta Part
- 21643849 Spacer Sleeve | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21643849-spacer-sleeve-genuine-volvo-penta)
> Updated: 2026-10-10