# 21389911 Heat Insulation | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Exhaust Heat Insulation - Part Number: 21389911

  

Model-specific thermal insulation section identified as position 9 within the inlet and exhaust system on Volvo Penta D13B-C MP engines. This shaped insulation piece fits its designated location around the hot exhaust-side components and is not interchangeable with the other insulation sections used in the same assembly.

  

⚙️ Key Features

  

• Genuine Volvo Penta shaped exhaust insulation section

• Installation position: 9 in the D13B-C MP inlet and exhaust assembly

• Reduces radiant heat transfer into the engine compartment

• Helps protect nearby wiring, hoses, brackets and service personnel

• Direct replacement for a damaged, oil-soaked or missing original section

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21389911 (current listed OEM reference for position 9)

  

OEM / Related Numbers:

  

• Companion insulation references within the same assembly: 21321057, 21321058, 21321059 / 22855249 and 21594762

• 22316856 - associated exhaust-insulation conversion kit; contents and applicability must be checked separately

• Companion insulation pieces are different shapes and are not substitutes for 21389911

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D13B-C MP marine engine inlet and exhaust systems

  

Typically suits:

  

• Engine models:

• D13B-C MP

  

• HP Range: Engine-rating dependent; insulation selection is controlled by the exact D13B-C MP exhaust arrangement

• Engine Type: Volvo Penta D13 12.8-litre inline six-cylinder marine diesel

• Year Range: Model- and serial-controlled D13B-C MP production

  

🔌 Function

  

Contains radiant and convected heat around its assigned exhaust-system section. Correct insulation lowers engine-room surface temperatures and reduces heat exposure to surrounding components.

  

Common signs of failure:

  

• Torn, crushed or missing insulation material

• Burnt, discoloured or oil-saturated outer covering

• Excessive heat affecting nearby wiring, hoses or paintwork

• Loose fasteners or insulation movement caused by vibration

• Higher engine-room heat or hot spots around the uncovered exhaust section

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 3895.39 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3895.39 AUD | In stock |

## Images

- 21389911 Heat Insulation | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21389911-heat-insulation-genuine-volvo-penta)
> Updated: 2026-08-02