# 21133410 Engine Speed Sensor | Genuine Volvo Penta Part

## 🔧 Product Description

A second camshaft/flywheel engine-speed sensor variant used on D5/D7 electronic installations. It supersedes 3887179 and is selected according to the sensor position, connector and ECU generation.

## 🚤 Compatibility

-   **Engine Family:** D
-   **HP Range:** 280-480 HP

Full model list at the end of this description.

## ⚙️ Key Features

-   Current replacement for 3887179
-   Precision magnetic pickup
-   Sealed connector for engine-environment service
-   Supports starting synchronisation and running-speed monitoring
-   Must not be swapped between cam and flywheel positions without parts list for your engine confirmation
-   Engine type: D5/D7-series inline diesel engine

## 🔌 Function

Provides the ECU with rotational speed and position pulses required for injection timing, synchronisation and overspeed protection.

## ⚠️ Common Signs of Failure

-   Intermittent or absent speed reading at the instrument panel
-   Engine refusing to start although it cranks normally
-   Sudden shutdown under load with a synchronisation fault stored
-   Unstable idle or surging as the pulse train breaks up
-   Cracked sensor body, swollen seal or oil tracking up the lead found on removal

## 🛠️ Service Notes

-   Confirm the sensor position from parts list for your engine before fitting, as the cam and flywheel positions are not interchangeable
-   Check the harness branch and connector for damage first, as a broken screen gives the same fault codes
-   Sensor 21133409 is the alternative position and generation for D5/D7 installations

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21133410 → Supersedes 3887179

### OEM / Related Numbers

-   3887179 earlier number superseded by this part
-   21133409 - companion speed-sensor variant

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D6-280I-D, D6-310I-D, D6-280I-E, D6-310I-E, D6-300I-F, D6-330I-C, D6-370I-C, D6-330I-D, D6-280I-C, D6-310I-C, D6-340I-G, D6-380I-G, D6-440I-G, D6-480I-G, D6-440I-WJ-G, D6-480I-WJ-G, D6-300I-G, D6-330I-F, D6-370I-F, D6-435I-C, D6-435I-D, D6-435I-E, D6-435I-F, D6-370I-D, D6-330I-E, D6-370I-E

## Details

- **Price:** 1826.56 AUD
- **Vendor:** Volvo Penta
- **Type:** Sensors & Senders
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1826.56 AUD | In stock |

## Images

- 21133410 Engine Speed Sensor | Genuine Volvo Penta Part
- 21133410 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/21133410-engine-speed-sensor-genuine-volvo-penta)
> Updated: 2026-10-08