3801144 Unit Injector Exch | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta remanufactured unit injector, weighing 1.177 kg and listed for seven TWD applications from the TWD1643GE through to the TWD1683GE. The reman catalogue puts it against the D16 engines that also take cylinder head 3801803 and the two-stage turbocharger pairing, 3801142 on high pressure with either 3801141 or 3801754 on low pressure. A unit injector combines the pumping element and the nozzle in one body, so it is driven and timed by the camshaft. Supplied on an exchange basis: core deposit 3804144 is charged alongside it and refunded once the old unit is returned, so both numbers appear on the order.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD1643GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1644-45GE
• Volvo Penta TWD1663GE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1672-1673GE

• Engine Family: TWD

⚙️ Key Features

• Seven TWD applications from the TWD1643GE to the TWD1683GE
• 1.177 kg
• Combined pump and nozzle in one camshaft-driven body
• Fitted to the D16 engines that use cylinder head 3801803

🔌 Function

Pressurises and injects its own cylinder's fuel charge, metered and timed by the engine's control system.

⚠️ Common Signs of Failure

• Misfire, rough idle or an uneven beat from one cylinder
• Black or white smoke and a smell of unburnt diesel
• Knock or rattle from one cylinder under load
• Hard starting and poor response
• Fuel or soot staining around the injector bore

🛠️ Service Notes

• Unit injector 3801263 weighs 1.173 kg - just four grams apart - so weight cannot separate the two; this one is the TWD part and 3801263 is the TAD1650GE and TAD1651GE unit
• Renew the copper sealing washer and the body o-rings on every injector disturbed, and reset the injector adjustment to specification
• Core deposit 3804144 is charged with this unit and refunded when the old one is returned - order both together

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• Delphi: BEBE5H00001

📦 Condition

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