Product Description
The CUMMINS 3943765 OEM FUEL INJECTION LINE – CYLINDER #1 is designed for 1998.5–2002 Dodge Ram trucks equipped with the 5.9L 24-valve Cummins diesel engine. This genuine Cummins high-pressure fuel injection line delivers fuel from the injection pump to cylinder #1 while maintaining proper fuel system performance and OEM fitment.
Use this part when replacing a damaged, leaking, corroded, or contaminated injector line. Proper fuel line condition is critical for maintaining injection timing, fuel delivery, and engine performance. Always verify fitment by engine serial number and part number before ordering.
FEATURES
- Genuine Cummins OEM fuel injection line
- Designed specifically for cylinder #1
- Direct-fit replacement for factory fuel system components
- Precision-formed high-pressure fuel line
- Helps maintain proper fuel delivery and injection performance
- Ideal for fuel system repair and restoration projects
FITMENT
- 1998.5–2002 Dodge Ram 2500 5.9L Cummins 24-Valve
- 1998.5–2002 Dodge Ram 3500 5.9L Cummins 24-Valve
- VP44 injection pump-equipped applications
WHAT'S INCLUDED
- 1 Cummins 3943765 OEM Fuel Injection Line – Cylinder #1
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3943765
- VP44 Fuel Injection Pump Components
- Cummins Fuel Injector Components
- Cummins Fuel Return Line Components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3943765
- Part Type: Fuel Injection Line
- Cylinder Location: #1
- Engine Compatibility: 5.9L Cummins 24-Valve
- Fuel System Type: VP44
- Fitment Years: 1998.5–2002
- Vehicle Application: Dodge Ram 2500 / 3500
- Condition: New OEM Cummins
- Installation Type: Direct Replacement
FAQ
Will this fuel injection line fit my truck?
This line fits many 1998.5–2002 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 24-valve Cummins engine and VP44 injection pump. Always verify fitment before ordering.
Is this a genuine Cummins fuel line?
Yes. Cummins 3943765 is a genuine OEM high-pressure fuel injection line manufactured to Cummins specifications.
Which cylinder does this line serve?
This injection line is specifically designed for cylinder #1.
When should a fuel injection line be replaced?
Replacement is recommended if the line is leaking, damaged, kinked, excessively corroded, or contaminated.
Can injector lines be straightened if bent?
No. High-pressure fuel injection lines should be replaced if damaged. Attempting to straighten or repair a bent line can lead to fuel leaks or line failure.
Do I need any related parts?
Inspect the fuel injectors, injection pump connections, line clamps, return lines, and sealing surfaces during installation and replace worn components as necessary.
