Cummins 2003–2004.5 Dodge Ram 5.9L Cummins Lift Pump Adapter O-Ring (3010937)
Description
A small O-ring can be the difference between a leak-free fuel system and diesel dripping down the side of your engine.
The Cummins 3010937 Lift Pump Adapter O-Ring is a genuine OEM replacement seal designed for 2003–2004.5 Dodge Ram 5.9L Cummins trucks equipped with the factory filter-mounted lift pump. This O-ring seals the connection between the lift pump and fuel filter housing, helping prevent fuel leaks and air intrusion into the low-pressure fuel system. It is also the replacement O-ring used with the Glacier Diesel Power Lift Pump Piggyback Adapter.
Whether you're replacing the factory lift pump, installing a new adapter, or servicing your fuel system, replacing this inexpensive seal is cheap insurance against future leaks.
Features
- Genuine Cummins OEM O-ring
- Cummins Part Number: 3010937
- Fits 2003–2004.5 Dodge Ram 5.9L Cummins
- Direct OEM replacement
- Seals the factory filter-mounted lift pump
- Also fits the Glacier Diesel Power Lift Pump Piggyback Adapter
- Helps prevent fuel leaks and air intrusion
- Diesel fuel resistant material
- Ideal during lift pump replacement or fuel system service
Why Replace the O-Ring?
The factory lift pump is mounted directly to the fuel filter housing using a single sealing O-ring.
After years of heat, vibration, and diesel fuel exposure, the original seal can become flattened, brittle, or damaged during removal. Reusing an old O-ring can result in fuel seepage or air entering the fuel system.
Replacing the seal during service helps:
- Prevent fuel leaks
- Maintain proper fuel system sealing
- Reduce the chance of air entering the fuel system
- Avoid unnecessary repeat repairs
- Ensure reliable lift pump operation
Glacier Tech Tip
Anytime the factory lift pump is removed, the O-ring should be replaced.
Before installing the new seal:
- Clean both sealing surfaces thoroughly.
- Remove any dirt or old gasket material.
- Lightly lubricate the new O-ring with clean diesel fuel before installation.
- Tighten mounting hardware evenly to avoid pinching the seal.
This same O-ring is also used on the Glacier Diesel Power Lift Pump Piggyback Adapter, making it a handy spare to keep on hand if you're running one of those systems.
Why Choose Genuine Cummins Parts?
Fuel system seals must withstand constant exposure to diesel fuel, pressure changes, and engine heat.
Genuine Cummins O-rings are manufactured to OEM specifications for proper material composition, fit, and sealing performance. Using the correct seal helps ensure a leak-free repair without worrying about sizing or material compatibility.
Applications
Fits:
- 2003 Dodge Ram 2500 5.9L Cummins
- 2003 Dodge Ram 3500 5.9L Cummins
- 2004 Dodge Ram 2500 5.9L Cummins
- 2004.5 Dodge Ram 2500 5.9L Cummins
- 2004.5 Dodge Ram 3500 5.9L Cummins
Designed for trucks equipped with the factory filter-mounted electric lift pump.
Kit Contents
Includes:
- (1) Genuine Cummins Lift Pump Adapter O-Ring
- Cummins Part Number: 3010937
Important Notes
- Genuine Cummins OEM replacement seal.
- Fits 2003–2004.5 5.9L Cummins applications with the factory filter-mounted lift pump.
- Also used with the Glacier Diesel Power Lift Pump Piggyback Adapter.
- Replace the O-ring whenever the lift pump or adapter is removed.
- Lightly lubricate the O-ring before installation.
- Inspect the lift pump mounting surface for corrosion or damage before reassembly.
Common Failure Point
The lift pump O-ring is exposed to constant engine heat, vibration, and diesel fuel. Over time, it can flatten, harden, or tear, allowing fuel to seep around the pump or air to enter the low-pressure fuel system.
Replacing the O-ring during lift pump service is one of the simplest and most inexpensive ways to help ensure a reliable, leak-free installation.
Complete Your Repair
While servicing your lift pump, consider replacing:
- Glacier Diesel Power Lift Pump Piggyback Adapter
- Replacement Filter-Mounted Lift Pump
- Fuel Filter
- Fuel Pressure Gauge and Sender
- Fuel Pressure Test Fittings
- Big Line Kit
- Additional Genuine Cummins O-Rings and Seals
Cummins 2003–2004.5 Dodge Ram 5.9L Cummins Lift Pump Adapter O-Ring (3010937)
Description
A small O-ring can be the difference between a leak-free fuel system and diesel dripping down the side of your engine.
The Cummins 3010937 Lift Pump Adapter O-Ring is a genuine OEM replacement seal designed for 2003–2004.5 Dodge Ram 5.9L Cummins trucks equipped with the factory filter-mounted lift pump. This O-ring seals the connection between the lift pump and fuel filter housing, helping prevent fuel leaks and air intrusion into the low-pressure fuel system. It is also the replacement O-ring used with the Glacier Diesel Power Lift Pump Piggyback Adapter.
Whether you're replacing the factory lift pump, installing a new adapter, or servicing your fuel system, replacing this inexpensive seal is cheap insurance against future leaks.
Features
- Genuine Cummins OEM O-ring
- Cummins Part Number: 3010937
- Fits 2003–2004.5 Dodge Ram 5.9L Cummins
- Direct OEM replacement
- Seals the factory filter-mounted lift pump
- Also fits the Glacier Diesel Power Lift Pump Piggyback Adapter
- Helps prevent fuel leaks and air intrusion
- Diesel fuel resistant material
- Ideal during lift pump replacement or fuel system service
Why Replace the O-Ring?
The factory lift pump is mounted directly to the fuel filter housing using a single sealing O-ring.
After years of heat, vibration, and diesel fuel exposure, the original seal can become flattened, brittle, or damaged during removal. Reusing an old O-ring can result in fuel seepage or air entering the fuel system.
Replacing the seal during service helps:
- Prevent fuel leaks
- Maintain proper fuel system sealing
- Reduce the chance of air entering the fuel system
- Avoid unnecessary repeat repairs
- Ensure reliable lift pump operation
Glacier Tech Tip
Anytime the factory lift pump is removed, the O-ring should be replaced.
Before installing the new seal:
- Clean both sealing surfaces thoroughly.
- Remove any dirt or old gasket material.
- Lightly lubricate the new O-ring with clean diesel fuel before installation.
- Tighten mounting hardware evenly to avoid pinching the seal.
This same O-ring is also used on the Glacier Diesel Power Lift Pump Piggyback Adapter, making it a handy spare to keep on hand if you're running one of those systems.
Why Choose Genuine Cummins Parts?
Fuel system seals must withstand constant exposure to diesel fuel, pressure changes, and engine heat.
Genuine Cummins O-rings are manufactured to OEM specifications for proper material composition, fit, and sealing performance. Using the correct seal helps ensure a leak-free repair without worrying about sizing or material compatibility.
Applications
Fits:
- 2003 Dodge Ram 2500 5.9L Cummins
- 2003 Dodge Ram 3500 5.9L Cummins
- 2004 Dodge Ram 2500 5.9L Cummins
- 2004.5 Dodge Ram 2500 5.9L Cummins
- 2004.5 Dodge Ram 3500 5.9L Cummins
Designed for trucks equipped with the factory filter-mounted electric lift pump.
Kit Contents
Includes:
- (1) Genuine Cummins Lift Pump Adapter O-Ring
- Cummins Part Number: 3010937
Important Notes
- Genuine Cummins OEM replacement seal.
- Fits 2003–2004.5 5.9L Cummins applications with the factory filter-mounted lift pump.
- Also used with the Glacier Diesel Power Lift Pump Piggyback Adapter.
- Replace the O-ring whenever the lift pump or adapter is removed.
- Lightly lubricate the O-ring before installation.
- Inspect the lift pump mounting surface for corrosion or damage before reassembly.
Common Failure Point
The lift pump O-ring is exposed to constant engine heat, vibration, and diesel fuel. Over time, it can flatten, harden, or tear, allowing fuel to seep around the pump or air to enter the low-pressure fuel system.
Replacing the O-ring during lift pump service is one of the simplest and most inexpensive ways to help ensure a reliable, leak-free installation.
Complete Your Repair
While servicing your lift pump, consider replacing:
- Glacier Diesel Power Lift Pump Piggyback Adapter
- Replacement Filter-Mounted Lift Pump
- Fuel Filter
- Fuel Pressure Gauge and Sender
- Fuel Pressure Test Fittings
- Big Line Kit
- Additional Genuine Cummins O-Rings and Seals