# 874370 Potentiometer | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta potentiometer for electric speed control, from the Alternator, Charging, Electric Motor and Electric Drives group, weighing 0.039 kg and listed for 8 applications across D and MD series engines. Potentiometer 874247 covers voltage adjusting instead, and the two are not interchangeable.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D5A-B TA
-   Volvo Penta D5A-T
-   Volvo Penta D5A-TA
-   Volvo Penta D7A-B TA
-   Volvo Penta D7A-T
-   Volvo Penta D7A-TA
-   Volvo Penta MD2010
-   Volvo Penta MD2010B

-   **Engine Family:** D, MD

## ⚙️ Key Features

-   For electric speed control
-   0.039 kg
-   8 applications across D and MD series engines
-   Separate from the voltage adjusting potentiometer 874247

## 🔌 Function

Converts the operator's speed demand into a variable resistance the electronic speed control reads.

## ⚠️ Common Signs of Failure

-   Engine speed hunting or surging at a steady lever position
-   Dead spot or step in the response part-way through the sweep
-   Speed demand sticking at one setting
-   Track worn or contaminated where the control sits most of the time
-   Terminals corroded or the shaft loose in the body

## 🛠️ Service Notes

-   Check the control linkage and harness before condemning the unit, since binding and poor contacts give the same hunting symptoms
-   Order by function: 874247 is the voltage adjusting potentiometer, this one is the speed control

## 📦 Condition

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

## Details

- **Price:** 451.58 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Controls
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 451.58 AUD | In stock |

## Images

- 874370 Potentiometer | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/874370-potentiometer-genuine-volvo-penta)
> Updated: 2026-10-08