Delphi EX631756 Fuel Injector

Delphi EX631756 Diesel Fuel Injector

The Delphi EX631756 is a remanufactured diesel fuel injector built for heavy-duty fuel injection systems that use a Celect injector design. It combines OE-based engineering with a metal-and-plastic body, a female 2-terminal pin connector, and a clamp-with-bolt attachment method for service replacement work.

For technicians and fleet maintenance teams working on diesel applications, this injector is built around the original system requirements and includes the seals needed for installation. Delphi’s OE heritage and supplier experience are reflected in the design and materials used in this replacement part.

Key Features

• Remanufactured standard replacement fuel injector
• Diesel fuel type for heavy-duty injector systems
• Celect injector design for OE-style service replacement
• Female connector with rectangle shape and 2 pin terminals
• Clamp-with-bolt attachment method
• Metal and plastic body construction
• Gasket or seal included with 3 O-rings
• Package includes fuel injector and instruction sheet

Detailed Description

Delphi EX631756 is a diesel fuel injector intended for heavy-duty fuel injection systems that require a Celect injector configuration. It is a remanufactured part engineered from Delphi’s OE experience, making it a practical choice for restoring proper fuel delivery in diesel engines that depend on accurate injector performance. This part cross-references 3411756 and 3411756PX for the same application.

Search terms such as Delphi EX631756 fuel injector, heavy-duty diesel injector replacement, and Celect injector for diesel fuel systems are commonly used by buyers looking for this type of service part. If you are sourcing a Delphi EX631756 for a diesel engine repair, verify the connector style, terminal count, and mounting method against the original injector before installation.

What This Injector Helps Address

• Hard starting caused by poor injector fuel delivery
• Rough idle from inconsistent diesel injection performance
• Loss of power related to worn injector operation
• Excessive smoke from improper atomization or fueling
• Fuel system drivability issues tied to injector wear

Installation Notes and Tips

Confirm the injector connector shape, terminal count, and clamp-with-bolt mounting style before installation. Replace worn seals and follow the instruction sheet included with the part. Clean the injector bore and surrounding fuel system components before fitting the new injector to help maintain a proper seal.

For diesel service work, verify application details against the original injector and engine specifications before installing Delphi EX631756. This is especially important when sourcing a replacement injector for heavy-duty diesel repair jobs where OE-style fit and connector compatibility matter.

Quality Assurance

Delphi builds aftermarket parts using knowledge developed through long-term OE supply experience with major automakers. The EX631756 remanufactured injector reflects that OE-based approach for diesel fuel system service.