# 3889439 Engine Speed Sensor | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta engine speed sensor from the marine propulsion group, listed for 12 applications on D series engines.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D11C1-A MP
-   Volvo Penta D11C3-A MP
-   Volvo Penta D8A5-A MH
-   Volvo Penta D8A6-A MH
-   Volvo Penta D11B3-A MP
-   Volvo Penta D11A-A
-   Volvo Penta D11A-B
-   Volvo Penta D11A-C
-   Volvo Penta D11A-D
-   Volvo Penta D11A-E
-   Volvo Penta D11B1-A MP
-   Volvo Penta D8A3-A MP

-   **Engine Family:** D

## ⚙️ Key Features

-   12 applications on D series engines
-   Engine speed signal for the control system

## 🔌 Function

Reads engine speed from a rotating toothed reference and reports it to the control system and instruments.

## ⚠️ Common Signs of Failure

-   Tachometer reading erratically, reading zero or dropping out
-   Engine cutting out, refusing to start or losing power with a speed signal fault stored
-   Rough or erratic running as the control system loses its speed reference
-   Sensor tip damaged, or packed with debris or metallic swarf
-   Corroded or water-damaged connector at the sensor

## 🛠️ Service Notes

-   The published weight looks wrong for a sensor of this type, so do not use it to identify the part
-   Check the sensor connector, wiring and air gap before condemning the sensor, and clean any debris from the tip
-   Set the sensor to the specified projection or air gap on fitting, and renew its sealing ring

## 📦 Condition

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

## Details

- **Price:** 5111.93 AUD
- **Vendor:** Volvo Penta
- **Type:** Sensors & Senders
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5111.93 AUD | In stock |

## Images

- 3889439 Engine Speed Sensor | Genuine Volvo Penta Part
- 3889439 Engine Speed Sensor | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3889439-engine-speed-sensor-genuine-volvo-penta)
> Updated: 2026-10-12