21553660 Oil Return Pipe | Genuine Volvo Penta Part

🔧 Product Description

A rigid gravity-drain pipe used in the low-outlet turbocharger installation of Volvo Penta TAD570VE-B and TAD571VE-B engines.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD570-72VE
• Volvo Penta TAD570-71VE-B

• Engine Family: TAD

⚙️ Key Features

• Turbocharger oil-return application
• Low-outlet exhaust configuration
• High-temperature oil-resistant pipe
• Precision flange and sealing connections

🔌 Function

The pipe drains oil from the turbocharger bearing housing back to the crankcase without creating return backpressure.

⚠️ Common Signs of Failure

• Oil leakage beneath the turbocharger
• Restricted or carboned return passage
• Turbocharger oil entering the intake or exhaust
• Cracked pipe or flange
• Failed gasket or sealing ring

🛠️ Service Notes

• Always fit new gaskets, O-rings or sealing washers — these joints see hot oil and a reused seal rarely holds
• Check the pipe is clear before it goes back on; if the bore is coked or sludged, renew it rather than trying to clean it out, because a restricted return backs oil up and pushes it past seals
• Route the pipe so it runs downhill to its outlet with no kinks, sags or strain, and do not spring it into place to make the flanges meet
• Clean the sealing faces without scoring them, and tighten the flange or union fasteners evenly to the figure in the workshop manual for your engine — these often thread into alloy and strip easily
• Run the engine up to temperature afterwards and check the joints while hot, since a marginal seal will often only weep once everything has expanded

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21553660 → Superseded by 22628282

OEM / Related Numbers

• 22628282 - Later oil return pipe
• 21630537 - Plane gasket
• 21638923 - Gasket
• 21750927 - Connecting pipe
• 1542781 - Sealing ring
• 20592787 - Hose clamp
• 21682971 - Heat shield

📦 Condition

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