# 21901811 Extension | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Extension - Part Number: 21901811

  

Factory extension component used in the Volvo Penta diesel installation that specifies 21901811. Its length, interface and mounting details are application controlled and must be matched to the original assembly.

  

⚙️ Key Features

  

• Factory length and interface geometry

• Designed for the assigned assembly

• Maintains alignment and clearance

• Uses original mounting hardware

• Exact product and serial match required

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21901811 (current listed OEM reference)

  

OEM / Related Numbers:

  

• 21901811

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta diesel engine or installation assembly listing extension 21901811

  

Typically suits:

  

• Engine / drive models:

  

• Exact Volvo Penta product / serial configuration listing 21901811

  

• HP / Rating: Engine or drive rating controlled by the complete product number

  

• Engine / System Type: Marine or industrial diesel installation component

  

• Year Range: Production configuration controlled; verify by product and serial number

  

• Serial / Specification Control: Confirm the complete engine product number, serial number and the extension dimensions/interface before ordering.

  

🔌 Function

  

Extends or spaces the assigned assembly while preserving its alignment and interface.

  

Common signs of failure or wear:

  

• Cracking or distortion

• Loose attachment

• Corrosion

• Misalignment

• Wear at the mating interface

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 149.54 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 149.54 AUD | In stock |

## Images

- 21901811 Extension | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21901811-extension-genuine-volvo-penta)
> Updated: 2026-08-03