20405629 Hose | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta formed hose linking the oil separator and breather pipe or manifold in D5/D7 crankcase-ventilation systems.

🚤 Compatibility

• Engine Family: TD, TAD

Full model list at the end of this description.

⚙️ Key Features

• Oil-mist-resistant crankcase breather hose
• Used with conduit coupling 20405625
• Confirmed on D5 and D7 filtered and unfiltered breather arrangements
• Designed for engine heat, oil vapour and vibration
• Requires the original clamps and routing
• Engine type: Volvo Penta 5- and 7-litre industrial diesel

🔌 Function

Carries crankcase vapour and separated oil mist between the separator, pipe and intake or outlet connection.

⚠️ Common Signs of Failure

• Oil mist or leakage on the hose
• Hose softening, collapse or cracking
• Crankcase pressure increase
• Restriction from sludge buildup

🛠️ Service Notes

• Fit hoses only to clean, sound spigots — take off old rubber, scale and corrosion, and renew the spigot or pipe if it is pitted, because no clamp will seal a rough sealing face
• Push the hose fully home so the clamp sits behind the bead or barb rather than over the end of the spigot, and fit new clamps whenever a hose is renewed
• Let the hose follow its natural bend with no kinks and no tension on either connection, clear of hot surfaces and moving parts, with chafe protection wherever it passes a bracket, edge or bulkhead
• Use the correct grade of hose for the duty, and clamp to the standard the installation demands — twin clamps are normal practice on seawater and fuel connections below the waterline
• Refill, vent and run the engine, then check every joint hot and cold and recheck the clamps after the first running period as the hose beds down

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20405626 - oil separator
• 20405625 - conduit coupling
• 20405630 - breather pipe
• 20405755 - hose clamps

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAD520GE, TAD520VE
• Volvo Penta TAD530GE MECH, TAD530GE EDC4
• Volvo Penta TAD531GE MECH, TAD531GE EDC4
• Volvo Penta TAD720GE, TAD720VE
• Volvo Penta TAD721GE, TAD721VE
• Volvo Penta TAD722GE, TAD722VE
• Volvo Penta TAD730GE MECH, TAD730GE EDC4
• Volvo Penta TAD731GE MECH, TAD731GE EDC4
• Volvo Penta TD520GE, TD520VE
• Volvo Penta TD720GE, TD720VE PP
• Volvo Penta TAD420VE
• Volvo Penta TAD532GE EDC4
• Volvo Penta TAD732GE EDC4
• Volvo Penta TAD733GE EDC4
• Volvo Penta TD420VE