22325866 Unit Injector | Genuine Volvo Penta Part

🔧 Product Description

A complete electronically controlled unit injector for selected Volvo Penta TAD11 Stage II industrial diesel engines. The injector combines high-pressure fuel generation, metering and nozzle delivery at each cylinder and is commanded by the engine control unit. Correct coding, sealing and rocker/yoke setup are essential after installation.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1150-52VE
• Volvo Penta TAD1140-42VE

• Engine Family: TAD

⚙️ Key Features

• Genuine Volvo Penta complete unit injector
• Documented Volvo Penta remanufactured service alternative available
• Electronically controls injection timing and fuel quantity
• Uses replaceable sealing O-rings and copper sealing components
• Designed for the TAD11 Stage II combustion and calibration specification
• Injector installation requires clean fuel-system practices and correct adjustment
• 6 used per assembly

🔌 Function

Pressurises, meters and atomises diesel fuel directly into its cylinder at the timing and quantity commanded by the ECU.

⚠️ Common Signs of Failure

• Uneven idle, cylinder imbalance or misfire
• Loss of power or excessive fuel consumption
• Black, white or blue exhaust smoke
• Fuel dilution of engine oil
• Injector electrical circuit or contribution fault codes
• Combustion knock or excessive return leakage
• External fuel leakage or combustion gas past the injector seal

🛠️ 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

• 3801617 - Volvo Penta factory-remanufactured service alternative

OEM / Related Numbers

• 276948 - Injector O-ring / seal kit
• 21801388 - Associated injector yoke
• 21344774 - Associated flange screw
• 994891 - Associated cable ties
• 990073 - Associated cable ties
• BEBE4D48001 - Delphi injector identification

Other-Brand OEM Numbers

• Delphi: BEBE4D48001

OEM Reman Alternatives

• 3801617 - Volvo Penta remanufactured injector

📦 Condition

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