859360 / 840741 Aftermarket Volvo Penta 2002/2003 Heat Exchanger | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Volvo Penta 2002/2003 Heat Exchanger - Replacement Part Number: 859360 / 840741

Heat exchanger for naturally aspirated Volvo Penta 2001, 2002 and 2003 diesel engines.

⚙️ Key Features

• Marine-grade shell-and-tube heat exchanger

• Designed as a direct replacement for the listed reference numbers

• Helps maintain stable operating temperature under sustained marine load

• Marine connection sizes and mounting points must match the original assembly

• Suitable for professional marine cooling-system service and replacement

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 859360 → Supersedes 840741 when installed with mounting kit 859387

OEM / Related Numbers:

• 859360

• 840741

• 859387 mounting kit

• 858129 / 858134 for 2003T

Aftermarket / Verified Equivalents:

• Mr Cool: MRC859360

• Lenco: Volvo Penta 859360 replacement

🚤 Compatibility

Commonly used on:

• Marine-grade shell-and-tube heat exchanger systems

Typically suits:

• Engine models:

• 2001/B/AG/BG

• 2002/B/D/AG/BG

• 2003/B/D/AG/BG

• Engine Type: naturally aspirated Volvo Penta 2000-Series diesel

• Excluded Application: 2003T turbo uses 858129 with insert 858134

🔌 Function

The heat exchanger keeps closed-loop coolant separate from seawater while transferring heat through the tube stack.

Common signs of failure:

• Engine or generator temperature rises above normal under load

• Coolant loss or seawater leakage around the exchanger

• Restricted seawater flow from scale, debris or damaged tubes

• Coolant contamination caused by an internal tube failure

• Corroded end covers, tube stack or sacrificial anode

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging