21089948 Manifold | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta crankcase-ventilation manifold used on selected TAD6 and TAD7 engines. The moulded manifold distributes crankcase vapour between the valve-cover outlet, oil-separator plumbing and return connections while maintaining the correct internal passage size and hose orientation.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD650VE
• Volvo Penta TAD660VE
• Volvo Penta TAD750VE
• Volvo Penta TAD760VE

• Engine Family: TAD

⚙️ Key Features

• Dedicated crankcase-breather distribution manifold
• Multiple indexed ports match the original hose routing
• Oil-vapour-resistant construction
• Maintains balanced flow through the separator and return circuit
• Manifold only; hoses, sleeves and clamps are separate
• Engine type: Volvo Penta 6- and 7-litre inline six-cylinder industrial diesel

🔌 Function

Collects and directs crankcase gases through the oil-separation system while allowing separated oil to return as designed.

⚠️ Common Signs of Failure

• Oil mist around the manifold ports
• Cracks or broken hose nipples
• Excessive crankcase pressure
• Breather hoses repeatedly coming loose
• Blocked internal passage causing oil leaks or dipstick blow-by

🛠️ Service Notes

• A manifold is a distribution casting, so every port and joint has to seal — renew all gaskets, seals and sealing washers on refitting rather than reusing the old ones
• Clean both mating faces back to bare metal and check the flanges for flatness, cracks and corrosion pitting; a distorted flange will not pull down onto a new gasket
• Make sure the internal passages are clear of scale, carbon and debris before fitting, and blank the open ports while the manifold is off the engine
• Draw the fasteners down progressively in the sequence and to the torque given in the workshop manual for your engine, then recheck after the first heat cycle if the manual asks for it
• On any manifold carrying raw water or exhaust gas, inspect the internal waterways at the same time — these castings corrode from the inside out and can look sound outside while the passages are wasted

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21089948 → Supersedes 20580084

OEM / Related Numbers

• 20580084 earlier number superseded by this part

Other-Brand OEM Numbers

• VOE21089948

📦 Condition

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