Product Description
Cummins 3914035 OEM Expansion Plug Side of Block for 1989-2002 5.9L Cummins 12V/24V
The Cummins 3914035 OEM Expansion Plug is a genuine Cummins replacement plug designed for the side of the engine block on 1989-2002 5.9L Cummins diesel engines. Whether you're performing an engine rebuild, replacing a leaking core plug, or completing preventative maintenance, this OEM expansion plug delivers the precise fit, durability, and reliability expected from genuine Cummins components.
Manufactured to original Cummins specifications, the 3914035 expansion plug helps seal coolant passages within the engine block while maintaining proper cooling system integrity. This direct replacement is commonly used during engine overhauls, freeze plug service, and restoration projects on both 12-valve and 24-valve Cummins-powered Dodge Ram trucks.
Features
- Genuine Cummins OEM component
- Direct replacement expansion plug for engine block applications
- Designed to maintain proper coolant sealing
- Manufactured to original Cummins specifications
- Ideal for engine rebuilds and preventative maintenance
- Helps prevent coolant leaks from block expansion plug locations
- Durable steel construction
- Reliable OEM fit and performance
- Designed specifically for Cummins B-Series diesel engines
Fitment
- 1989-1993 Dodge Ram 5.9L Cummins 12-Valve
- 1994-1998 Dodge Ram 5.9L Cummins 12-Valve
- 1998.5-2002 Dodge Ram 5.9L Cummins 24-Valve
- 5.9L Cummins B-Series diesel engines
- Engine block side expansion plug locations requiring Cummins part number 3914035
Note: Verify the expansion plug location and engine serial number before ordering. Multiple expansion plug sizes and locations may exist throughout the engine block and cylinder head.
What's Included
- One (1) Genuine Cummins 3914035 Expansion Plug
Specifications
- Manufacturer: Cummins
- Part Number: 3914035
- Product Type: Expansion Plug / Core Plug / Freeze Plug
- Installation Location: Side of Engine Block
- Material: Steel
- Engine Platform: Cummins B-Series
- Engine Displacement: 5.9L
- OEM Replacement: Yes
- Application: Engine Cooling System Service and Repair
Cross Reference Numbers
3914035, Cummins 3914035, OEM Expansion Plug, OEM Core Plug, OEM Freeze Plug, Cummins Block Expansion Plug
FAQ
What does the Cummins 3914035 expansion plug do?
The expansion plug seals coolant passages within the engine block and helps maintain cooling system integrity while preventing coolant leaks.
Is this a genuine Cummins part?
Yes. The 3914035 is a genuine Cummins OEM replacement component designed to meet original factory specifications.
Will this fit both 12-valve and 24-valve 5.9L Cummins engines?
Yes. This expansion plug is commonly used on 1989-2002 5.9L Cummins applications, including both 12-valve and 24-valve engines. Always verify your specific engine requirements before ordering.
When should expansion plugs be replaced?
Expansion plugs are commonly replaced during engine rebuilds, cooling system repairs, or whenever corrosion, coolant seepage, or leakage is present.
Is this commonly called a freeze plug?
Yes. Expansion plugs are often referred to as freeze plugs or core plugs, although their primary purpose is sealing casting openings in the engine block.
Can I replace only one leaking expansion plug?
Yes, but if multiple plugs show signs of corrosion or age, many technicians recommend replacing all accessible plugs while the cooling system is being serviced.
