Product Overview

This high-quality Fuel Common Rail Pressure Limiting Valve (OEM 1110010020 / 1110010021) is a critical component designed for the diesel fuel injection system of Dongfeng Cummins engines. As a direct replacement for the original pressure relief valve, it ensures the precise regulation of fuel rail pressure, protecting the injectors and pump from over-pressure damage. Sourced from a professional manufacturer in Shandong, China, this part is available for global B2B distribution, serving major markets in North America, Europe, Southeast Asia, the Middle East, and Africa.

Key Features & Benefits

• Precision Engineering: Manufactured to meet or exceed OEM specifications for exact fit and reliable performance.
• Durable Construction: Made from high-grade steel to withstand high-pressure diesel environments and resist corrosion.
• System Protection: Effectively limits fuel rail pressure to prevent damage to the Common Rail, injectors, and high-pressure pump.
• Improved Engine Stability: Ensures consistent fuel pressure for smoother engine operation and reduced emissions.
• Cost-Effective Solution: A high-quality aftermarket alternative to expensive dealer parts, offering excellent value for fleet maintenance.

Technical Specifications

OEM Cross-Reference

This pressure limiting valve is a direct replacement for the following OEM part numbers:

• 1110010020
• 1110010021

Note: Always verify your existing part number before ordering. This part is designed for specific Cummins/Dongfeng common rail systems.

Compatibility

• Engine Make: Dongfeng Cummins
• Engine Type: Diesel Engines (ISDe, ISLe, ISBe series and compatible models)
• Application: Fits heavy-duty trucks, buses, construction machinery, and agricultural equipment equipped with compatible Cummins common rail fuel systems.

Global Supply & Distribution

We are a dedicated supplier of diesel engine parts with a strong focus on international B2B trade. Our logistics network supports:

• Worldwide Shipping: Reliable delivery to North America, South America, Europe, Southeast Asia, the Middle East, Africa, and Oceania.
• Major Ports: Fast shipping via sea to ports like Shanghai, Qingdao, Ningbo, and air freight to major international hubs.
• Flexible Quantities: MOQ of 50 pcs, with options for bulk orders and customized packaging (Neutral or OEM branding).
• Trade Compliance: Experienced in export documentation and customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in a certified facility with strict quality control processes.
• Testing: Each valve is pressure-tested to ensure reliable opening and closing performance.
• Warranty: Backed by a 4-month warranty against manufacturing defects.

FAQ

Q: What is the function of this pressure limiting valve?

A: This valve is installed on the common rail. Its primary function is to act as a safety device. If the fuel pressure in the rail exceeds the system’s maximum limit, the valve opens to relieve the excess pressure, preventing damage to the injectors and the high-pressure pump. It reseals once the pressure normalizes.

Q: How do I know if this valve fits my engine?

A: Please verify the part number on your existing valve. It should match 1110010020 or 1110010021. This valve is specifically designed for Dongfeng Cummins diesel engines with a common rail fuel system. If you are unsure, please contact us with your engine model and serial number for confirmation.

Q: Is installation difficult? Do I need special tools?

A: Installation requires basic mechanical knowledge and standard tools. However, as this component is part of the high-pressure fuel system, it is recommended to have it installed by a qualified diesel mechanic to ensure proper torque and sealing. The system must be depressurized before removal.