Thermostat Template Cummins 3920336 | 181855

Ensure Proper Cooling System Alignment with the Cummins 3920336 Thermostat Template

The Cummins 3920336 Thermostat Template is a specialized tool designed for Cummins B-Series engines, including the popular 4BT 3.9L and 6BT 5.9L models. While sometimes referred to or mistaken for a gasket in legacy catalogs, this template serves a critical function: it allows technicians to verify that the thermostat housing has sufficient clearance and does not interfere with the thermostat’s jiggle pins during installation.

Key Features & Benefits:

• Precision Fitment: Specifically engineered for Cummins 4BT 3.9 and 6BT 5.9 diesel engines.
• Prevents Overheating: Helps identify casting interference in non-chamfered thermostat housings, ensuring the thermostat seats fully and functions correctly.
• Reliable Performance: Facilitates proper air venting during cooling system refills, preventing localized hot spots.

Engine Compatibility:

• Cummins 4BT 3.9L
• Cummins 6BT 5.9L