20412291 Coolant Pipe | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta coolant pipe used in both TD520GE and TD720GE radiator packages. On the TD520GE it is paired with pipe 20405657; on the TD720GE it connects to pipe 20412292.

🚤 Compatibility

Typically suits:

• Volvo Penta TD720GE
• Volvo Penta TD720VE PP
• Volvo Penta TD520GE
• Volvo Penta TD520VE

• Engine Family: TD

⚙️ Key Features

• Factory-formed radiator coolant pipe
• Confirmed on TD520GE and TD720GE
• Used with sealing ring 20412319
• Secured and routed with the specified hose clamps and cable ties
• Companion pipe differs according to engine model
• Engine type: Volvo Penta 5- and 7-litre industrial diesel

🔌 Function

Routes coolant between the engine and radiator in the applicable cooling-package arrangement.

⚠️ Common Signs of Failure

• Pipe chafing or vibration cracking
• Hose joint movement

🛠️ Service Notes

• Clean both flanges or spigots and check the sealing lands for pitting and corrosion; renew every O-ring, seal or gasket at the joint rather than reusing one that has taken a set
• Lubricate coolant-side O-rings with coolant or a rubber-safe lubricant — petroleum oil and grease swell and soften the rubber and end up in the coolant
• Offer the pipe up and align both ends before pulling any fastener tight, so the joints are not held together by strain from a misaligned pipe or an over-stretched hose
• Check the bore is clear of scale, sealant and debris before fitting, and inspect the pipe for internal corrosion or thinning if the old one was leaking
• Refill with the coolant type and mix specified for your engine, bleed the system through, then check the joints again with the engine hot and up to pressure

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20412291 → Supersedes 20405660

OEM / Related Numbers

• 20405660 earlier number superseded by this part
• 20405657 - TD520GE companion pipe
• 20412292 - TD720GE companion pipe
• 20412319 - sealing ring
• 943480 - hose clamps
• 948211 - cable ties

📦 Condition

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