# 21381032 Water Pipe | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Water Pipe - Part Number: 21381032

  

A rigid engine-coolant pipe used in the cooling-water-pump and thermostat-housing circuit on selected Volvo Penta D13 marine engines, including keel-cooled installations. It provides the correctly formed coolant passage between fixed cooling-system components.

  

⚙️ Key Features

  

• Genuine Volvo Penta formed coolant pipe

• Used in D13 cooling-water-pump and thermostat-housing installations

• Catalogued for engines equipped with KC keel cooling

• Correct flange position, pipe shape and mounting geometry

• Helps maintain reliable coolant circulation and pressure integrity

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21381032 (Volvo Penta catalog reference)

  

OEM / Related Numbers:

  

• 21468471 - related pump unit

• 22195450 - related pump unit

• 20464402 - related plastic plug

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D13 marine diesel cooling systems

• Keel-cooled D13 installations

  

Typically suits:

  

• Engine models:

• D13B-E MH

• D13B-E MH (FE)

• D13B-N MH

• D13B-N MH (FE)

• D13C1-A MH

• D13C2-A MH

  

• HP Range: Engine-rating dependent

• Engine Type: D13 inline-six turbocharged marine diesel

• Year Range: Model- and serial-number dependent

  

🔌 Function

  

Routes engine coolant through the cooling-water-pump and thermostat-housing section of the closed freshwater cooling circuit.

  

Common signs of failure:

  

• Coolant seepage at the pipe or flange joints

• Corrosion, pitting or wall thinning

• White, green or dried coolant residue

• Progressive coolant loss

• Engine overheating caused by leakage or restricted flow

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 444.27 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 444.27 AUD | In stock |

## Images

- 21381032 Water Pipe | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21381032-water-pipe-genuine-volvo-penta)
> Updated: 2026-08-02