# 21376964 Adapter | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine adapter used in the crankshaft vibration-damper and front-pulley assembly of the Volvo Penta D13B-A MP marine diesel engine. It locates the damper and pulley components concentrically on the crankshaft.

## 🚤 Compatibility

-   **Engine Family:** D

Full model list at the end of this description.

## ⚙️ Key Features

-   Confirmed D13B-A MP application
-   Crankshaft vibration-damper adapter
-   Factory concentric bore and mounting geometry
-   Maintains damper and pulley alignment
-   Works with the specified crankshaft, damper and pulley components
-   Quantity varies by assembly, most commonly one

## 🔌 Function

The adapter locates and couples the crankshaft vibration damper and pulley assembly so rotating components remain concentric.

## ⚠️ Common Signs of Failure

-   Fretting or movement at the joint
-   Crankshaft pulley wobble
-   Abnormal torsional vibration
-   Wear at the centring surface

## 🛠️ Service Notes

-   Check the adapter against both of the parts it has to join before fitting — adapters are specific to an engine and its variant, and one that is close but not correct will not seat or seal properly
-   Clean and inspect both mating faces or connector ends; grit, old sealant or corrosion on one side is the usual reason an adapted joint leaks or works intermittently
-   Renew any O-ring, gasket or sealing washer belonging to the joint rather than reusing the old one, and lubricate rubber seals lightly so they slide into place instead of rolling or nipping
-   Tighten threaded adapters to the figure given in the workshop manual for that connection; many go into aluminium or onto a soft seat and will distort if pulled up hard
-   Where the adapter is a workshop tool, check it for thread wear and damage before use and never modify it to make something fit

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21376964 → Supersedes 3595298

### OEM / Related Numbers

-   3595298 earlier number superseded by this part
-   21230583 - Crankshaft references by revision
-   22697519 - Crankshaft references by revision
-   3594670 - Vibration-damper references
-   23049224 - Vibration-damper references
-   21710847 - Pulley
-   21499128 - Shaft
-   997790 - O-ring

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 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-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, D13C2-A MH, D13C1-B MG, D13C3-B MG, D13C5-A MP, D13C2-A MG, D13C1-A MG, D13C7-B MP, D13C8-B MP, D13C9-A MP

## Details

- **Price:** 532.81 AUD
- **Vendor:** Volvo Penta
- **Type:** Marine Equipment
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 532.81 AUD | In stock |

## Images

- 21376964 Adapter | Genuine Volvo Penta Part
- 21376964 Adapter | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21376964-adapter-genuine-volvo-penta)
> Updated: 2026-10-11