C3955080 XCMG GR2605 motor grader fuel connector

C3955080 is an original equipment manufacturer (OEM) fuel block connection connector for Cummins engines. As a key connecting component in the fuel system, it links fuel lines to the fuel block with a threaded structure, ensuring excellent sealing and pressure resistance. Its core function is to secure and seal fuel lines, prevent leakage and air intrusion, and maintain stable fuel delivery in the fuel system.

Part Number: C3955080
Type: Fuel block connection connector (threaded type)
Compatible System: Cummins electronic controlled high-pressure common rail fuel system
Sealing Configuration: Equipped with O-ring and gaskets for reliable fuel path sealing
Installation Method: Threaded connection, fixed with special fasteners
Compatible Materials: Suitable for steel fuel lines, matches standard interfaces of Cummins engine fuel blocks

Applicable Engines：

Equipment：

Location：

At the fuel block interface of the engine, connecting the fuel delivery pipe to the fuel block, usually located on the engine side or in the fuel line arrangement area for easy installation and maintenance.

Fuel Leakage at Connector
Causes: Aged/damaged O-ring, insufficient thread torque, deformed or damaged connector body.
Symptoms: Fuel seepage or dripping at the connector with diesel odor; severe cases lead to fuel pressure drop.
Solution: Replace worn O-ring or gasket; tighten threads to standard torque; replace C3955080 connector if body is damaged.

Air Intrusion in Fuel Path
Cases: Poor connector sealing, loose line connection, misaligned connector installation.
Symptoms: Hard starting, unstable idle, power loss; air bubbles in fuel lines.
Solution: Inspect connector sealing and replace damaged components; reinstall connector with aligned interface; bleed air from fuel lines after installation.

Loose Connection
Causes: Insufficient torque during installation; thread loosening due to long-term vibration.
Symptoms: Gap at the connector-fuel block interface; fuel pressure fluctuation; occasional abnormal noise during driving or operation.
Solution: Tighten threads to standard torque with special tools; inspect threads for damage and replace connector if necessary.