21906630 Turbocharger | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta turbocharger built to the Holset HE500WG / 4031291H specification for TAD1351VE-TAD1353VE engines. Compressor, turbine and wastegate calibration are engine-rating specific and must match the complete turbo identification.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1371-75VE
• Volvo Penta TAD1351-53VE

• Engine Family: TAD

⚙️ Key Features

• Engine-specific compressor and turbine match
• Calibrated wastegate / actuator where fitted
• Oil-lubricated high-speed bearing system
• Factory flange and housing orientation
• Intake, exhaust and lubrication systems must be verified

🔌 Function

Uses exhaust energy to compress intake air, increasing air mass, torque and engine power while the wastegate controls maximum boost.

⚠️ Common Signs of Failure

• Low boost, slow acceleration or power loss
• Blue/black smoke or increased oil consumption
• Siren, scraping or bearing noise
• Oil leakage into intake or exhaust
• Wastegate seizure, actuator fault or over/underboost

🛠️ Service Notes

• Find and fix the cause before fitting a replacement — a restricted air intake, a dirty or partly blocked oil feed, a poor oil drain or debris loose in the exhaust will destroy the new turbocharger as quickly as it did the old one
• Renew or thoroughly flush the oil feed and drain lines, fit new sealing washers and gaskets, and change the engine oil and filter at the same time
• Prime the bearing housing with clean engine oil through the feed connection while turning the compressor wheel by hand, before the feed pipe is connected
• Check both wheels spin freely without touching their housings, and that the inlet and exhaust joints are clean and true so nothing can be drawn or blown through
• After starting, let the engine idle so oil reaches the bearings before any load is applied, and idle it again to cool the bearings before shutting down after a hard run

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 4031291H - Holset manufacturer numbers
• 5329248 - Holset/Cummins reference
• 3785793 - manufacturer reference
• 5322493 - manufacturer reference
• 3790860 - manufacturer reference

Other-Brand OEM Numbers

• Holset / Cummins Turbo Technologies HE500WG
• Holset 4031291H / 4031291
• Holset 5329248 / 3785793 / 5322493 / 3790860 - cross-reference numbers; actuator and calibration must match

📦 Condition

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