21381313 Water Pipe | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Water Pipe - Part Number: 21381313

A formed cooling-system water pipe used on selected Volvo Penta D13 marine propulsion and marine generating-set engines. The pipe connects the designated expansion-tank and coolant circuit components while maintaining the original mounting position and sealing arrangement.

⚙️ Key Features

• Genuine Volvo Penta formed cooling-system pipe

• Correct shape and flange alignment for the original D13 installation

• Used in marine propulsion and marine generating-set cooling systems

• Designed to seal with the specified O-ring and retaining hardware

• Supports reliable coolant circulation and expansion-tank connection

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21381313 (current Volvo Penta reference)

OEM / Related Numbers:

• 975675 - related O-ring

• 984735 - related flange screw

• 961657 - related hose nipple

• 949918 - related shut-off cock

• 23360152 - related expansion tank reference

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta D13 marine propulsion cooling systems

• Volvo Penta D13 marine generating-set cooling systems

Typically suits:

• Engine models:

• D13B-E MH

• D13B-E MH (FE)

• D13B-E MG (FE)

• D13C1-B MH

• D13C3-B MH

• D13C4-B MH

• HP Range: Engine-rating dependent

• Engine Type: D13 inline-six turbocharged marine diesel

• Year Range: Model- and serial-number dependent

🔌 Function

Routes coolant between the expansion-tank connection and the designated engine cooling-system circuit while maintaining a sealed, correctly supported flow path.

Common signs of failure:

• Coolant leakage at the pipe flange or O-ring

• Corrosion, pitting or external rust staining

• Dried coolant residue around the joint

• Repeated coolant-level loss

• Overheating or poor coolant circulation

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging