# 21789059 Sensor | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta electronic sensor calibrated for the assigned instrument or engine-control input. Connector, signal range and thread or mounting geometry must match the exact system.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta V8-380-CE-A
-   Volvo Penta V8-380-C-B
-   Volvo Penta V8-380-CE-B
-   Volvo Penta V8-380-C-D
-   Volvo Penta V8-380-CE-D
-   Volvo Penta V8-430-CE-D
-   Volvo Penta V8-350-C-D
-   Volvo Penta V8-350-CE-D
-   Volvo Penta V8-380-C-A

-   **Engine Family:** V
-   **HP Range:** 350-430 HP

## ⚙️ Key Features

-   Factory signal calibration
-   Correct connector and pin assignment
-   Application-specific measuring range
-   Designed for the assigned control unit
-   Product and serial number must be confirmed

## 🔌 Function

Measures the assigned physical condition and supplies a calibrated signal to the instrument or engine-control system.

## ⚠️ Common Signs of Failure

-   Implausible or intermittent readings
-   Warning alarms with known-good mechanical values
-   Open- or short-circuit diagnostic code
-   Signal changes when the harness is moved
-   Corrosion, fluid entry or damaged sensing tip

## 🛠️ Service Notes

-   Note how the sensor sits and how its lead is routed before removing it, and support the harness so refitting does not leave the cable strained or rubbing
-   Turn the sensor with a spanner on its hex only — never lever or twist it by the connector body or the wiring, which breaks the internal joint even when the sensor looks undamaged
-   Renew the O-ring or sealing washer where one is fitted, and do not add thread sealant unless the manual for your engine specifies it; sealant on the threads can break the earth path of a sensor that earths through its body
-   Tighten to the figure in the workshop manual for your engine — overtightening distorts the housing and shifts or destroys the sensing element
-   Make sure the connector is clean, dry and fully latched home and check the pins for corrosion and spread — a poor connector accounts for a great many faults blamed on the sensor — then run the engine and confirm the reading or warning lamp behaves sensibly before returning the boat to service

## 📦 Condition

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

## Details

- **Price:** 312.32 AUD
- **Vendor:** Volvo Penta
- **Type:** Sensors & Senders
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 312.32 AUD | In stock |

## Images

- 21789059 Sensor | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21789059-sensor-genuine-volvo-penta)
> Updated: 2026-09-06