# 21379943 Unit Injector | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta High-Output Marine Unit Injector - Part Number: 21379943

  

Genuine Delphi E3.18 electronic unit injector calibrated for selected high-output Volvo Penta D13B-A MP and MD13 marine propulsion engines. It uses the Delphi BEBE4D26001 calibration and is intended for the correct matched D13 marine-engine specification.

  

Because injection rate and nozzle calibration differ between D13 applications, part number 21379943 must be confirmed against the engine product designation, serial number and original injector number.

  

⚙️ Key Features

  

• Genuine Volvo Penta high-output marine unit injector

• Delphi BEBE4D26001 E3.18 injector design

• Designed for selected D13B-A MP and MD13 propulsion applications

• Genuine remanufactured reference 3801370

• Precision electronic control of injection timing and quantity

• Requires correct injector seals, yoke torque and valve/injector adjustment

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21379943 - New genuine unit injector

• 3801370 - Genuine Volvo Penta remanufactured equivalent

  

OEM / Related Numbers:

  

• 21379943

• 3801370

• 7421379943

  

Associated Installation Parts:

  

• 276948 - Injector O-ring kit

• 21261987 - Injector washer

• 21168206 - Injector yoke

• 8131597 - Flange screw

• 8131393 - Retainer

  

Aftermarket / Verified Equivalents:

  

• Delphi: BEBE4D26001

• Delphi-format remanufactured replacements: BEBE4D26001

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta high-output D13 marine propulsion engines

• MD13 marine applications requiring BEBE4D26001 calibration

  

Typically suits:

  

• Engine models:

• D13B-A MP

• MD13 marine propulsion calibrations using injector 21379943

• MD13 800HP and selected higher-output marine specifications where 21379943 is recorded as the original injector

  

• Engine Displacement: 12.8 litres

• Engine Type: Inline 6-cylinder, twin-turbo or high-output turbocharged marine diesel, depending on configuration

• HP Range: High-output marine calibration; confirm by engine serial number

• Year Range: Application and serial-number specific

  

🔌 Function

  

The unit injector creates high fuel pressure and injects a precisely metered, finely atomised fuel charge directly into the combustion chamber. Its calibration is matched to the engine's piston, turbocharging, ECU software and rated-power specification.

  

Common signs of failure:

  

• Hard starting or failure to start

• Rough idle or one weak cylinder

• Loss of rated power

• Black or white exhaust smoke

• Abnormally high exhaust temperature

• Increased fuel consumption

• Diesel contamination of the engine oil

• Injector electrical or cylinder-balance fault codes

• Combustion knock or irregular engine sound

• Excessive leakage or poor injector return-flow result

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 2833.96 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2833.96 AUD | In stock |

## Images

- 21379943 Unit Injector | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21379943-unit-injector-genuine-volvo-penta)
> Updated: 2026-08-02