# 21446285 Bottom Plate | Genuine Volvo Penta Part

## 🔧 Product Description

A structural compression plate fitted at the bottom of selected Volvo Penta D13 and D16 plate-type heat exchangers. One plate is normally used per applicable cooler assembly.

## 🚤 Compatibility

-   **Engine Family:** D

Full model list at the end of this description.

## ⚙️ Key Features

-   Genuine Volvo Penta structural bottom plate
-   Supports and compresses the cooling-plate stack
-   Maintains even gasket loading
-   One normally required per heat exchanger
-   Designed for large D13 and D16 marine coolers
-   Engine type: D13 or D16 turbocharged marine diesel

## 🔌 Function

Forms the lower structural plate that compresses and supports the heat-exchanger plate stack.

## ⚠️ Common Signs of Failure

-   Plate distortion
-   Uneven compression of the cooler stack
-   External leakage around the lower plates
-   Cracks around the tie-bolt or mounting points

## 🛠️ Service Notes

-   At over 7 kg this bottom plate is heavy enough that it must be supported while the last through-bolts are removed, not left hanging on the plate stack above it
-   Renew the gaskets between the plate stack and this bottom plate as a set when the cooler is opened, and draw the through-bolts down evenly and in sequence so the stack compresses square rather than tilting on one corner

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21446285 → Supersedes 21111085

### OEM / Related Numbers

-   21111085 earlier number superseded by this part
-   21111056 - top plate
-   21242894 - bottom cooling plate
-   21242895 and 21242897 - internal cooling plates
-   21242898 - middle cooling plate
-   21242902 - plate gasket
-   22948727 and 23808623 - heat-exchanger assemblies

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D13C3-B MH, D13C1-B MH, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-A MP, D13B-H MP, D13B-G MP, D13B-L MP, D13B-E MG, D13B-E MG (FE), D13B-E MH, D13B-E MH (FE), D13B-F MG, D13B-F MG (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-M MP, D13B-C MP, D13C4-B MP, D13C5-B MP, D13C6-A MP, D13C1-A MH, D13C1-B MG, D13C3-B MG, D13C5-A MP, D13C1-A MG, D13C7-B MP, D13C8-B MP

## Details

- **Price:** 7022.15 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 7022.15 AUD | In stock |

## Images

- 21446285 Bottom Plate | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21446285-bottom-plate-genuine-volvo-penta)
> Updated: 2026-10-08