Volvo Penta Thermostat Kit 3831426

The Volvo Penta 3831426 Thermostat Kit is a genuine OEM cooling system service kit designed to regulate engine temperature and maintain optimal performance in Volvo Penta marine engines.

This complete kit includes the thermostat and sealing components required for proper installation, ensuring consistent coolant flow and accurate thermal regulation. By maintaining correct engine operating temperature, it helps prevent overheating, improves fuel efficiency, and extends engine life in demanding marine environments.

Built to Volvo Pentas exact specifications, this kit delivers reliable, long-lasting performance across a wide range of gasoline sterndrive and inboard engines.

Key Features

• Genuine Volvo Penta OEM kit
• Complete thermostat and sealing solution
• Maintains precise engine operating temperature
• Prevents overheating and cold running conditions
• Ensures consistent cooling system performance
• Corrosion-resistant marine-grade construction

Engine Compatibility

Volvo Penta Gasoline Engines

Commonly used on:

• Volvo Penta 3.0L engines
• Volvo Penta 4.3L V6 engines
• Volvo Penta 5.0L V8 engines
• Volvo Penta 5.7L V8 engines

Volvo Penta Sterndrive Applications

• SX drives
• DP-S / DP-SM drives
• DP-E / DP-G drives

Fits a wide range of GM-based Volvo Penta gasoline marine engines

Serial Number Fitment Notice

Fitment depends on:

• Engine model and production year
• Cooling system configuration (raw water vs closed cooling)

Always confirm compatibility using your engine serial number before ordering.

Specifications

• Part Number: 3831426
• Type: Thermostat kit
• Function: Regulates coolant temperature
• Temperature Rating: Typically ~160F170F (71C77C) depending on application
• Construction: Marine-grade metal thermostat with rubber sealing components

Whats Included

• Thermostat
• O-ring / gasket seal

When This Part Needs Replacement

Replace the thermostat kit if you notice:

• Engine overheating
• Engine running below normal operating temperature
• Fluctuating or unstable temperature readings
• Poor fuel efficiency or rough running

Installation Notes

• Always replace included seal/O-ring during installation
• Ensure correct thermostat orientation
• Clean and inspect housing before install
• Verify cooling system operation after installation

Alternate / Superseded Part Numbers

OEM Cross References

• Volvo Penta: 3831426
• Replaces / supersedes: 3850364 / 3853799 (application dependent)

Shipping

Shipping: Ships same or next day for fast Canada wide shipping.

Parts Desk Insight

On Volvo gas engines, thermostats tend to fail open firstif your engine wont reach temp, this kit is usually the fix