NT855 Fuel Injector Copper Sleeve 3011934 for Cummins Engine Parts

Product Details

Product Overview

This high-quality fuel injector copper sleeve, part number 3011934, is a critical component designed specifically for the Cummins NT855 engine series. As a direct replacement part, this copper sleeve ensures a precise seal between the fuel injector and the cylinder head, preventing combustion gas leakage and maintaining optimal engine compression.

Manufactured by in Guangdong, China, this component is built to meet OEM specifications for size and material composition. The sleeve is commonly used in heavy-duty applications such as excavators, loaders, bulldozers, trucks, forklifts, and buses powered by the Cummins NT855 diesel engine. Proper installation of this sleeve is essential for maintaining fuel system integrity and preventing power loss or rough engine operation.

Key Features & Benefits

• OEM Standard Fitment: Manufactured to original equipment manufacturer (OEM) size specifications, ensuring seamless installation and reliable sealing performance.
• Premium Copper Construction: Made from high-quality copper material for excellent heat dissipation and corrosion resistance in demanding engine environments.
• Critical Seal Integrity: Designed to prevent exhaust gas blow-by and fuel dilution of engine oil, protecting your engine from premature wear and performance degradation.
• Direct Replacement Part: Part number 3011934 is a direct interchange for the original Cummins component, simplifying parts procurement and inventory management.
• Versatile Application: Suitable for a wide range of heavy equipment including excavators, loaders, bulldozers, trucks, and industrial machinery using the NT855 engine platform.
• Cost-Effective Solution: Offers a reliable aftermarket alternative to expensive dealer parts without compromising on quality or performance.
• Rigorous Quality Control: Each sleeve undergoes outgoing video inspection and machinery test reporting to ensure dimensional accuracy and defect-free delivery.

Technical Specifications

OEM Cross-Reference

This fuel injector copper sleeve 3011934 is a direct replacement for the following OEM part numbers:

• Cummins OEM: 3011934
• Alternative References: 3011934 (Cummins genuine), 3011934 (aftermarket)

Note: Always verify your existing part number before ordering. This part is designed as a direct interchange for the listed OEM numbers. No other cross-references are available for this specific component.

Compatibility

This product is specifically designed for the Cummins NT855 diesel engine platform. It is commonly used for the following applications:

• Engine Models: Cummins NT855, NTA855, NTC855 series
• Vehicle Applications: Forklifts, Excavators, Trucks, Loaders, Bulldozers, Buses, and other heavy equipment using the NT855 engine
• Equipment Types: Construction machinery, mining equipment, agricultural tractors, generator sets, and industrial power units

Fitment is inferred based on engine model compatibility. Always confirm your specific engine serial number and application before purchasing.

Global Supply & Distribution

We offer worldwide shipping capabilities to support international B2B buyers. Our major markets include:

• North America: United States, Canada, Mexico – delivered to major ports (Los Angeles, Houston, Vancouver) and industrial centers
• Europe: Germany, UK, Netherlands, France, Italy – shipped to Rotterdam, Hamburg, and inland distribution hubs
• Asia-Pacific: Australia, Japan, South Korea, Singapore, Middle East (UAE, Saudi Arabia) – fast delivery to major Asian ports
• South America & Africa: Brazil, Chile, South Africa, Nigeria – reliable logistics to emerging industrial markets

We maintain export experience and international trade compliance for smooth customs clearance. Typical lead times are 7-15 working days for standard orders, with express shipping options available for urgent requirements. We can arrange delivery to your warehouse, job site, or designated freight forwarder.

Quality Assurance

• Manufacturing Standards: Produced in ISO-compliant facilities in Guangdong, China, using precision machining processes
• Material Certification: High-grade copper material meeting OEM specifications for hardness, thermal conductivity, and dimensional stability
• Testing Procedures: Each batch undergoes machinery test reporting and outgoing video inspection to verify critical dimensions and surface finish
• Warranty Coverage: 6-month warranty against manufacturing defects, covering replacement or refund within the warranty period
• Packaging Protection: Individually wrapped in plastic bags, then packed in boxes and cartons to prevent damage during transit

FAQ

Q1: How do I know if this copper sleeve fits my Cummins NT855 engine?
Verify your engine model is NT855 (or NTA855/NTC855 variant). Check your existing part number against our OEM cross-reference (3011934). The sleeve is designed for fuel injector bores in the cylinder head. If your engine uses a different injector sleeve design or part number, please consult your engine manual or contact us for verification before ordering.

Q2: What is the proper installation procedure for this injector copper sleeve?
Installation requires careful cleaning of the injector bore, applying appropriate sealant (if specified by Cummins service guidelines), and using the correct installation tool to press the sleeve to the proper depth. Over-tightening or improper seating can cause seal failure. We recommend following the Cummins NT855 service manual for torque specifications and installation procedures. Ensure the sleeve is not damaged during insertion.

Q3: What are common signs that this copper sleeve needs replacement?
Symptoms of a failing injector copper sleeve include: exhaust gas leakage around the injector, rough engine idle, loss of power, increased fuel consumption, and black smoke from the exhaust. You may also notice oil contamination from fuel dilution or coolant leakage if the sleeve is severely compromised. Regular inspection during injector service intervals is recommended to prevent further engine damage.