# 21536341 Control Unit | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta EVC-C 4-20 mA Interface I/O Control Unit - Part Number: 21536341

  

A dedicated Volvo Penta EVC-C interface module that converts external 4-20 mA control signals into propulsion commands. It allows compatible third-party vessel-control systems to command throttle, gear selection and slip functions through the EVC network.

  

⚙️ Key Features

  

• Genuine Volvo Penta EVC-C interface module

• Accepts industry-standard 4-20 mA analogue inputs

• Supports throttle, ahead/astern gear and slip commands

• Designed for integration with commercial vessel automation

• Requires correct EVC installation, configuration and calibration

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21536341 (current interface control-unit reference)

  

OEM / Related Numbers:

  

• 3886231 - related 4-20 mA interface kit

• 3886232 - related interface kit

• 21509941 - related interface set

• Associated EVC-C network harness and installation components

  

Aftermarket / Verified Equivalents:

  

• No universal plug-and-play equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta EVC-C propulsion systems with an external 4-20 mA control interface

  

Typically suits:

  

• Engine models:

• EVC-C marine diesel packages configured for third-party throttle, gear or slip control

  

• HP Range: Propulsion-package dependent

• Engine Type: Electronically controlled Volvo Penta marine diesel

• Year Range: EVC-C generation and vessel-integration dependent

  

🔌 Function

  

Interprets external 4-20 mA input signals and communicates the corresponding propulsion commands to the EVC-C system.

  

Common signs of failure:

  

• Throttle or gear command unavailable

• Incorrect response to an external control signal

• 4-20 mA input outside the expected range

• EVC network communication fault

• Control unit will not calibrate or initialise

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 4172.51 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4172.51 AUD | In stock |

## Images

- 21536341 Control Unit | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21536341-control-unit-genuine-volvo-penta)
> Updated: 2026-08-03