21379939 Unit Injector | Genuine Volvo Penta Part

🔧 Product Description

Genuine Delphi E3.18 electronic unit injector calibrated for selected Volvo Penta MD13, D13 marine, industrial and power-generation engines. This injector is used across several D13B, D13C and TAD13 engine configurations that require the BEBE4D27002/BEBE4D18002 calibration. Injector selection must be based on the precise engine model, serial number and original injector reference. Other D13 injectors may physically install but have different fuel-delivery calibrations.

🚤 Compatibility

Typically suits:

• Volvo Penta D13C4-B MH
• Volvo Penta D13C1-B MH
• Volvo Penta D13B-E MG
• Volvo Penta D13B-E MG (FE)
• Volvo Penta D13B-E MH
• Volvo Penta D13B-E MH (FE)
• Volvo Penta D13B-F MG
• Volvo Penta D13B-F MG (FE)
• Volvo Penta D13B-N MH
• Volvo Penta D13B-N MH (FE)
• Volvo Penta TAD1344-45GE-B
• Volvo Penta D13C1-A MH
• Volvo Penta D13C2-A MH
• Volvo Penta D13C2-A MG
• Volvo Penta D13C1-A MG
• Volvo Penta TAD1353GE
• Volvo Penta TAD1344GE
• Volvo Penta TAD1345GE
• Volvo Penta TAD1345VE

• Engine Family: D, TAD
• Year Range: Used in selected D13 applications produced through approximately 2004-2018

⚙️ Key Features

• Genuine Volvo Penta electronic unit injector
• Delphi E3.18 pump-injector technology
• Used in selected marine, industrial and genset D13 applications
• Engine-calibration-specific fuel delivery
• Engine type: Inline 6-cylinder electronic unit-injected diesel
• 6 used per assembly

🔌 Function

The injector generates injection pressure and electronically meters fuel into its assigned cylinder. Correct injector calibration controls combustion timing, delivered fuel quantity, engine output, exhaust temperature, fuel efficiency and emissions.

⚠️ Common Signs of Failure

• Engine misfire or uneven cylinder contribution
• Hard starting when cold or hot
• Unstable idle
• Excessive exhaust smoke
• Increased fuel use
• Fuel contamination of the lubricating oil
• Abnormal combustion noise
• Injector circuit or cylinder-balance fault codes
• Excessive return flow or internal leakage

🛠️ Service Notes

• Work scrupulously clean: cap or plug the fuel connections as soon as they are opened and keep grit out of the injector bore and off the injector body — contamination is the commonest cause of a new unit injector failing early
• Fit new O-rings and sealing washers throughout, lightly lubricated on assembly so they slide into the bore without rolling or being nipped
• Inspect the copper sleeve in the head while the injector is out; a sleeve that is disturbed, corroded or leaking must be renewed with the proper sleeve tooling before the injector goes back
• Clean the injector seat and the sealing area at the top of the bore, and check the hold-down clamp and yoke for wear or distortion — a bent clamp will let combustion gases past
• Tighten the clamp and set the unit injector adjustment to the procedure, sequence and figures in the workshop manual for your engine, bleed the fuel system before cranking, and where the engine management holds injector calibration or trim data, program the new injector in

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3801369 - Genuine Volvo Penta remanufactured equivalent

OEM / Related Numbers

• 3801369 related reference
• 3847790 related reference
• 276948 - Injector O-ring kit
• 21098571 - Associated gasket
• 21801388 - Injector yoke
• 21344774 - Flange screw
• 8131393 - Retainer

Other-Brand OEM Numbers

• Delphi: BEBE4D27002
• Delphi: BEBE4D27002-12B1
• Delphi: BEBE4D18002
• Lucas: LDFC0426
• Lucas: LDFC0410
• Lucas trade reference: 21159131

Aftermarket / Verified Equivalents

• DT Spare Parts: 2.21097

📦 Condition

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