21379944 Unit Injector | Genuine Volvo Penta Part

🔧 Product Description

Genuine Delphi E3.18 electronic unit injector used in selected Volvo Penta TAD1346GE and MD13 high-output diesel-engine applications. This injector uses BEBE4D26002 calibration and must be matched to the engine's exact fuel-system specification. The injector is not interchangeable with 21379943/BEBE4D26001 unless Volvo Penta application data specifically identifies the change for the engine serial number.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1346GE
• Volvo Penta TAD1643VE-B
• Volvo Penta D13C1-A MP
• Volvo Penta D13C3-A MP
• Volvo Penta D13B-B MP
• Volvo Penta D13B-D MP
• Volvo Penta D13B-J MP
• Volvo Penta D13B-M MP
• Volvo Penta TAD1640-42GE-B

• Engine Family: TAD, D

⚙️ Key Features

• Genuine Volvo Penta electronic unit injector
• Delphi BEBE4D26002 E3.18 design
• Used in selected TAD1346GE and MD13 applications
• Genuine remanufactured injector reference 3801371
• Compatible core-return reference recorded for reman programs
• Precision-calibrated nozzle and electronic actuator
• Engine type: Inline 6-cylinder electronically controlled turbo diesel
• 6 used per assembly

🔌 Function

The electronic unit injector pressurises and meters fuel for one cylinder. The engine ECU energises its actuator to control injection timing and quantity, while the injector nozzle atomises fuel for efficient combustion.

⚠️ Common Signs of Failure

• Extended cranking or difficult starting
• Uneven idle or cylinder misfire
• Reduced generator or propulsion power
• Failure to accept load cleanly
• Excessive black, grey or white smoke
• Increased fuel consumption
• High exhaust-gas temperature on the affected cylinder
• Injector actuator or cylinder-balance fault codes
• Fuel dilution of the engine oil
• Abnormal combustion knock or vibration

🛠️ 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

• 3801371 - Genuine Volvo Penta remanufactured equivalent

OEM / Related Numbers

• 3801371 related reference
• 3804371 - Associated core-return reference
• 21351717 - Injector sleeve kit
• 20981856 - Injector sleeve
• 21261987 - Injector washer
• 276948 - Injector O-ring kit
• 21801388 - Injector yoke
• 21344774 - Flange screw
• 8131393 - Retainer

Other-Brand OEM Numbers

• Delphi: BEBE4D26002
• Delphi replacement marking: BEBE4D26002DR
• Delphi: HRE351
• Delphi: BEBE4D26002-12B1
• Lucas: LDFC0424

Aftermarket / Verified Equivalents

• Sunrise Diesel: BEBE4D26002DR replacement

📦 Condition

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