# 21292836 Sensor | Genuine Volvo Penta Part

## 🔧 Product Description

An electronic sensor used to detect water entering the drive-shaft bellows on selected Volvo Penta DPS and FWD sterndrives. Early warning can help prevent corrosion and damage to the universal-joint and drive-shaft assembly. Genuine Volvo Penta sensor listed for gasoline sterndrive engines of the 5.0GXi family (5.0GXi-270-R, 5.0GXi-J/JF, 5.0OSi-J, 5.0GXi-P and GXiC/GiC/GXiCE/GiCE/GXiE variants).

## 🚤 Compatibility

-   **Engine Family:** V, D, DPI
-   **HP Range:** 150-480 HP

Full model list at the end of this description.

## ⚙️ Key Features

-   Monitors the sterndrive bellows cavity
-   Interfaces with the dedicated sensor module and harness
-   Designed for DPS and FWD drive families
-   Engine type: Volvo Penta sterndrive

## 🔌 Function

Detects water inside the drive-shaft bellows and sends a warning to the vessel monitoring system.

## ⚠️ Common Signs of Failure

-   Water-in-bellows warning remains active when the cavity is dry
-   No warning during a functional test
-   Sensor circuit fault
-   Corroded connector or terminals
-   Water or oil contamination around the sensor
-   Damaged mounting O-ring

## 🛠️ 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

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   21124251 - related wiring
-   21206915 - sensor module
-   21206919 - wiring harness
-   21210873 - mounting bracket
-   3852033 - O-ring

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta V8-350-C-R, V8-350-CE-R, V8-380-C-R, V8-380-CE-R, V8-430-C-R, V8-300-C-M, V8-300-CE-M, V8-350-C-M, V8-350-CE-M, V8-300-C-N, V8-300-CE-N, V8-350-C-N, V8-350-CE-N, V8-380-C-M, V8-380-CE-M, V8-380-CE-A, V8-380-C-B, V8-380-CE-B, V8-380-C-D, V8-380-CE-D, V8-430-CE-D, V8-350-C-D, V8-350-CE-D, V8-380-C-A, V8-380-CE-J, V8-380-C-J, V8-430-CE-J, V8-430-C-J, V8-350-C-H, V8-350-CE-H, V8-350-C-J, V8-350-CE-J, V8-300-C-R, V8-300-CE-R, V8-430-CE-R, V8-430-C-M, V8-430-CE-M, V8-300-C-K, V8-300-CE-K, V8-350-C-K, V8-350-CE-K, V8-380-C-K, V8-380-CE-K, V8-430-C-K, V8-430-CE-K, V8-300-C-P, V8-300-CE-P, V8-350-C-P, V8-350-CE-P, V8-380-C-P, V8-380-CE-P, V8-430-C-P, V8-300-CE-G, V8-300-C-G, V8-300-C-H, V8-300-CE-H, V8-300-C-J, V8-300-CE-J, V8-350-C-G, V8-350-CE-G, V8-380-C-N, V8-380-CE-N, V8-430-C-N, V8-430-CE-N, V8-430-CE-P, V8-300-C-S, V8-300-CE-S, V8-350-C-S, V8-350-CE-S, V8-400-CE-R
-   Volvo Penta V6-200-N, V6-200-C-N, V6-200-CE-N, V6-240-M, V6-240-C-M, V6-240-CE-M, V6-280-M, V6-280-C-M, V6-280-CE-M, V6-280-J, V6-280-CE-J, V6-280-G, V6-280-C-G, V6-280-CE-G, V6-280-C-J, V6-240-N, V6-240-C-N, V6-240-CE-N, V6-280-N, V6-280-C-N, V6-240-CE-K, V6-280-CE-K, V6-200-P, V6-200-C-P, V6-200-CE-P, V6-250-P, V6-250-C-P, V6-250-CE-P, V6-280-P, V6-280-C-P, V6-280-CE-P, V6-200-C-G, V6-200-G, V6-200-J, V6-200-C-J, V6-280-CE-N, V6-200-M, V6-200-C-M, V6-250-O, V6-250-C-O, V6-250-CE-O, V6-240-C-G, V6-240-CE-G, V6-240-G, V6-240-J, V6-240-CE-J, V6-240-C-J
-   Volvo Penta D6-300A-G, D6-340A-G, D6-380A-G, D6-400A-G, D6-440A-G, D6-480A-G
-   Volvo Penta D4-150A-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G
-   Volvo Penta DPI-A

## Details

- **Price:** 168.19 AUD
- **Vendor:** Volvo Penta
- **Type:** Sensors & Senders
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 168.19 AUD | In stock |

## Images

- 21292836 Sensor | Genuine Volvo Penta Part
- 21292836 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/21292836-sensor-genuine-volvo-penta)
> Updated: 2026-09-22