# 21397682 Pipe | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta D11/D16 Expansion Tank Pipe - Part Number: 21397682

  

Rigid coolant connection pipe used at the expansion-tank assembly on specified Volvo Penta D11 and D16 marine engines. It provides the formed, correctly aligned passage between the tank and adjoining cooling-system hose or water pipe while preserving the required clearance around the engine installation.

  

⚙️ Key Features

  

• Genuine Volvo Penta formed expansion-tank pipe

• Used in specified D11A and D16C marine cooling systems

• Correct bends and connection geometry for the OEM tank arrangement

• Works with the applicable O-ring, hose and pressure-cap components

• Rigid replacement for a corroded, damaged or distorted original pipe

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21397682 (current listed OEM reference)

  

OEM / Related Numbers:

  

• 3885197 → Superseded by 21505289 - associated expansion-tank assembly on specified D11 applications

• 21861378 - associated D16 expansion tank

• 1674083 - associated pressure cap

• 968725 - associated O-ring

• 21867371 - associated water pipe

• 943366 / 943367 - associated cooling hoses

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta marine-engine expansion-tank and coolant-deaeration circuits

  

Typically suits:

  

• Engine models:

• D11A-A

• D11A-B

• D11A-C

• D11A-D

• D16C-A MG

• D16C-A MG RC

  

• HP Range: Engine-rating dependent; pipe shape and tank arrangement control fitment

• Engine Type: Volvo Penta D11 or D16 inline six-cylinder marine diesel

• Year Range: D11A/D16C generation; model- and serial-controlled

  

🔌 Function

  

Carries coolant between the expansion tank and the engine cooling circuit while maintaining the tank's deaeration and pressure-management path.

  

Common signs of failure:

  

• Coolant seepage, staining or corrosion at the pipe ends

• Pinhole corrosion or cracking at formed bends

• Distortion causing poor hose alignment or clamp sealing

• Restricted internal passage from deposits

• Loss of coolant or air entry into the expansion-tank circuit

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 50.96 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 50.96 AUD | In stock |

## Images

- 21397682 Pipe | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21397682-pipe-genuine-volvo-penta)
> Updated: 2026-08-02