20859426 Water Pipe | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta formed water pipe for the engine cooling circuit. Unlike a universal hose, this rigid pipe uses fixed bends, end geometry and mounting positions to preserve coolant flow and component clearance in the original installation.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD765VE
• Volvo Penta TAD764VE
• Volvo Penta TAD763VE
• Volvo Penta TAD762VE
• Volvo Penta TAD761VE

• Engine Family: TAD

⚙️ Key Features

• Genuine Volvo Penta Formed Cooling Water Pipe - part number 20859426
• OEM-formed coolant pipe with application-specific bends and length
• Correct connection geometry for the original seals, fasteners and hose joints
• Maintains a full-flow coolant passage without hose collapse
• Supports repeatable routing and clearance from belts, exhaust parts and wiring
• Suitable for normal cooling-system pressure and temperature cycling
• Exact position and serial applicability must be confirmed from the engine parts catalogue
• Engine type: D5/D7-series Volvo Penta industrial diesel applications

🔌 Function

The pipe transfers coolant between the listed engine cooling components while maintaining the designed flow area. Its rigid routing also keeps the coolant connection stable so attached hoses and seals are not placed under side load.

⚠️ Common Signs of Failure

• Coolant leakage at the pipe ends or sealing joints
• Rust, pitting or stress cracking
• Distortion that prevents correct alignment
• Restricted flow from internal scale or impact damage
• Repeated hose or seal failure caused by a bent pipe

🛠️ Service Notes

• Drain the system to below the level of the pipe before disconnecting it and catch what comes out — coolant and raw water both make a mess of a bilge
• Renew the O-rings, seals or gaskets at each joint rather than reusing them, and lubricate rubber seals with clean coolant or the lubricant the manual specifies, never with oil or grease
• Check the bore is clear and clean before fitting; scale, silt and debris carried over from the old pipe will lodge in the pump or heat exchanger
• Support the pipe on its original brackets and clips so the joints carry no strain, and keep it clear of hot surfaces and moving parts
• Refill, bleed, then run the engine and check every joint for weeping while it is warm and under pressure

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• VOE20859426

📦 Condition

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