21106502 Hose | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta moulded seawater hose used in the V8 gasoline-engine thermostat-housing circuit supplying the exhaust elbows. In the V8-270/300/320 C and CE cooling diagrams, this hose occupies a defined branch alongside hoses 21106504 and 21106506. Its formed shape maintains flow and clearance around the thermostat housing, fuel-pump area and exhaust components.

🚤 Compatibility

• Engine Family: V
• HP Range: 225-320 HP

Full model list at the end of this description.

⚙️ Key Features

• Moulded seawater hose for the V8 thermostat-housing/exhaust-elbow circuit
• Position-specific bends avoid the exhaust manifolds and fuel-system components
• Marine-grade reinforced hose withstands suction, pressure and warm seawater
• Correct end diameters match the original thermostat-housing and pipe connections
• Separate part from companion hoses 21106504 and 21106506
• Engine type: Volvo Penta V8 gasoline marine engine seawater-cooling system

🔌 Function

Routes raw cooling water from the thermostat-housing circuit toward the assigned exhaust-elbow or cooling branch.

⚠️ Common Signs of Failure

• Seawater leakage at the hose ends
• Soft or internally collapsed hose restricting exhaust cooling
• Heat damage near the exhaust manifold
• Cracking or salt deposits around clamp positions
• Exhaust-elbow overheating or reduced cooling-water discharge

🛠️ 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

• 21106504 - companion moulded hoses
• 21106506 - companion moulded hoses
• 21106508 - companion moulded hoses
• 21114718 - companion moulded hoses
• 3589553 - thermostat housing
• 3587597 - thermostat
• 3863439 - hose clamps used at the assigned connections

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 5.7GXiC-320-R, 5.7GXiCE-320-R, 5.7GXiC-J, 5.7GXiCE-J, 5.7GXiCE-M, 5.7GXiC-P, 5.7GXiCE-P, 5.7GiCE-300-M, 5.7GiC-300-J, 5.7GiCE-300-J, 5.7GiC-300-P, 5.7GiCE-300-P, 5.7GiC-300-R, 5.7GiCE-300-R, 5.0GiC-225-S, 5.0GiCE-225-S, 5.0GiC-J, 5.0GXiCE-J, 5.0GXiCE-M, 5.0GXiC-P, 5.0GXiCE-P, 5.0GXiC-270-R, 5.0GXiCE-270-R, 5.0GXiC-J
• Volvo Penta V8-270-C-B, V8-270-CE-B, V8-300-C-A, V8-300-CE-A, V8-300-C-B, V8-320-C-B, V8-320-CE-B, V8-300-CE-B, V8-320-C-A, V8-320-CE-A, V8-225-C-A, V8-225-CE-A, V8-225-C-B, V8-225-CE-B, V8-270-C-A, V8-270-CE-A