# 21389900 Heat Insulation | Genuine Volvo Penta Part

## 🔧 Product Description

Model-specific thermal insulation section 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.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D13C2-A MP
-   Volvo Penta D13C4-A MP
-   Volvo Penta D13B-G MP
-   Volvo Penta D13B-L MP
-   Volvo Penta D13B-K MP
-   Volvo Penta D13B-C MP
-   Volvo Penta D13C4-B MP
-   Volvo Penta D13C5-B MP
-   Volvo Penta D13C6-A MP
-   Volvo Penta D13C5-A MP
-   Volvo Penta D13C8-B MP

-   **Engine Family:** D

## ⚙️ Key Features

-   Genuine Volvo Penta shaped exhaust insulation section
-   Installation position: 17 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
-   Engine type: Volvo Penta D13 12.8-litre inline six-cylinder marine diesel

## 🔌 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

## 🛠️ Service Notes

-   Refit every shield and insulation panel before the engine is run — they are there to keep exhaust and manifold surface temperatures down in an enclosed engine space, and leaving one off is a genuine fire risk as well as making the space unbearable
-   Check that the standoffs, spacers, clips and fasteners go back with the panel; the air gap they hold is what does the insulating, so a panel clamped flat to the manifold is not doing its job
-   Renew insulation that is charred, crushed, torn, delaminated or has been soaked with oil or fuel — once contaminated it cannot be cleaned and it becomes the ignition source it was fitted to prevent
-   Find and fix the leak first if the old insulation was oil-soaked or fuel-soaked; a new panel fitted over a live leak will be ruined again
-   Check clearance to hoses, cables and the wiring loom once refitted, and make sure nothing can chafe against the shield edge with engine movement

## 🔄 Supersession & Cross Reference

### 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

## 📦 Condition

-   Genuine Volvo Penta part
-   Brand new
-   Supplied in original or equivalent packaging

## Details

- **Price:** 2905.42 AUD
- **Vendor:** Volvo Penta
- **Type:** Inlet & Exhaust
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2905.42 AUD | In stock |

## Images

- 21389900 Heat Insulation | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21389900-heat-insulation-genuine-volvo-penta)
> Updated: 2026-09-06