# 21406493 Stay | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta D3 Heat Exchanger Support Stay - Part Number: 21406493

  

A rigid support stay used to brace the heat exchanger and adjoining cooling-system structure on selected Volvo Penta D3 marine diesel engines. It reduces movement of the cooler and helps prevent vibration loading on hoses and brackets.

  

⚙️ Key Features

  

• Genuine Volvo Penta heat-exchanger stay

• Correct length and factory mounting geometry

• Supports the cooler and connected hose assembly

• Reduces vibration and mounting fatigue

• Used with the original D3 heat-exchanger brackets and profile

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21406493 (current catalogued reference)

  

OEM / Related Numbers:

  

• 21308169 - related heat-exchanger stay

• 21306599 - support profile

• 21572462 - heat-exchanger bracket

• 22004363 - related heat exchanger

• 21166146, 21166149 and 21454184 - related hoses

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D3 heat-exchanger installations

  

Typically suits:

  

• Engine models:

• D3-110I-D / E / F / G / H

• D3-140A-D / E / F / G / H

• D3-140I-D / E / F / G / H

• D3-150I-D / E / F / G / H

• D3-170A-G / H

• D3-170I-D / E / F / G / H

• D3-200A-D / G / H

• D3-200I-G / H

• D3-220A-G / H

• D3-220I-G / H

  

• HP Range: 110 HP - 220 HP

• Engine Type: D3 five-cylinder turbocharged marine diesel

• Year Range: D-, E-, F-, G- and H-generation application dependent

  

🔌 Function

  

Braces the heat exchanger and maintains the designed position of the cooler, hoses and mounting brackets.

  

Common signs of failure:

  

• Cracked or bent stay

• Heat-exchanger movement or vibration

• Coolant-hose chafing

• Repeatedly loosening mounting screws

• Cooler misalignment after service or impact

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 101.44 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 101.44 AUD | In stock |

## Images

- 21406493 Stay | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21406493-stay-genuine-volvo-penta)
> Updated: 2026-08-02