# 3172774 Engine Speed Sensor | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta engine speed sensor for flywheel housing 40005625, from the Instruments group, weighing 0.184 kg and listed for 26 D series engine applications. Fits Volvo Penta D9A2A-D9A2K variants, D12C-A MP and D12D-A to D12D-H (MG/MH/MP) marine diesels.

## 🚤 Compatibility

-   **Engine Family:** D

Full model list at the end of this description.

## ⚙️ Key Features

-   For flywheel housing 40005625
-   0.184 kg
-   26 D series engine applications
-   Quantity varies by assembly, most commonly two

## 🔌 Function

Reads engine speed from the flywheel and reports it to the control system.

## ⚠️ Common Signs of Failure

-   No or erratic engine speed signal
-   Engine cutting out or refusing to start
-   Fault code naming the speed circuit
-   Debris built up on the sensor tip
-   Corrosion at the connector

## 🛠️ Service Notes

-   It is specified for flywheel housing 40005625 — the housing sets the sensor position and air gap, so confirm which is fitted
-   Check the sensor tip for metallic debris before condemning it; a build-up alone can kill the signal

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D12C-A MP, D12D-A MG, D12D-A MH, D12D-A MP, D12D-B MH, D12D-B MP, D12D-C MH, D12D-C MP, D12D-D MP, D12D-E MG, D12D-E MH, D12D-E MP, D12D-F MP, D12D-G MH, D12D-G MP, D12D-H MP
-   Volvo Penta D9A2J, D9A2G, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2A, D9A2C, D9A2E

## Details

- **Price:** 465.0 AUD
- **Vendor:** Volvo Penta
- **Type:** Sensors & Senders
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 465.00 AUD | In stock |

## Images

- 3172774 Engine Speed Sensor | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3172774-engine-speed-sensor-genuine-volvo-penta)
> Updated: 2026-10-07