# 21912303 Speed Sensor | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Flywheel Speed Sensor / Speed Monitor - Part Number: 21912303

  

Engine-speed sensor mounted in the TAD550GE flywheel housing. It detects passing flywheel/ring-gear features to provide rotational-speed information for control, protection and governing functions.

  

⚙️ Key Features

  

• Non-contact engine-speed sensing

• Sealed electrical connector

• Designed for flywheel-housing mounting

• Provides control and protection signal

• Correct air gap and serial fitment required

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21912303 (current listed OEM reference)

  

OEM / Related Numbers:

  

• 21912303

• 22938146 - sensor O-ring

• 21912255 / 21912256 - flywheel-housing references

• 20450694 - retaining screw

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• TAD550GE flywheel housing and engine-control system

  

Typically suits:

  

• Engine / drive models:

  

• TAD550GE

  

• HP / Rating: Engine or drive rating controlled by the complete product number

  

• Engine / System Type: Generator diesel electronic speed-sensing system

  

• Year Range: Production configuration controlled; verify by product and serial number

  

• Serial / Specification Control: Confirm sensor depth, connector and flywheel-housing configuration. Correct air gap is essential.

  

🔌 Function

  

Generates the crankshaft/flywheel speed signal used by the engine controller and generator protection/governing system.

  

Common signs of failure or wear:

  

• No-start or immediate shutdown from missing speed signal

• Intermittent RPM reading

• Overspeed/underspeed fault codes

• Metal debris on magnetic sensor tip

• Damaged wiring, connector or incorrect air gap

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 356.07 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 356.07 AUD | In stock |

## Images

- 21912303 Speed Sensor | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21912303-speed-sensor-genuine-volvo-penta)
> Updated: 2026-08-03