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Precision Auto Parts
Engineered for Excellence

RUIAN DELLFEI AUTO PARTS CO.,LTD. – ISO/TS16949 & CE Certified Manufacturer of High-Performance NOx Sensors, Fuel Pressure Sensors, Fuel Metering Valves, and Fuel Pressure Limiters. Trusted by clients across Africa, Americas, Asia, Europe, and Oceania.

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2007
Founded
16+ Yrs
Experience
31-40%
Export Rate
50+
Global Clients

About Dellfei

RUIAN DELLFEI AUTO PARTS CO.,LTD. is a professional manufacturer based in Zhejiang, China, specializing in advanced diesel engine components. Since our establishment in 2007, we have been committed to delivering high-quality NOx Sensors, Fuel Pressure Sensors, Fuel Metering Valves, and Fuel Pressure Limiters to meet the evolving demands of the global automotive and industrial markets.

Our products are engineered for reliability, precision, and durability, serving a wide range of applications including passenger vehicles, commercial trucks, excavators, and agricultural machinery from leading brands such as Cummins, Bosch, Denso, Delphi, Scania, Volvo, MAN, Mercedes-Benz, and John Deere.

ISO/TS16949 & CE Certified
Exported to 50+ Countries
Factory Equipment Production Line Quality Control Product Testing

Our Products

High-performance automotive sensors and control valves designed for precision, durability, and optimal engine performance.

NOx Sensor

NOx Sensor / Nitrogen Oxide Sensor

For Cummins, DAF, Scania, Volvo, MAN, IVECO, Mercedes-Benz, BMW, VW, and more.

  • • 24V Operation
  • • High Accuracy Detection
  • • OBD2 Compliant
  • • Models: 5WK9 6752C, 4326868
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Fuel Pressure Sensor

Fuel Pressure Sensor

Common Rail & Diesel Systems for Bosch, Denso, Delphi, Toyota, Isuzu.

  • • Models: 0281006087, 499000-6121
  • • High-Temperature Resistant
  • • Stable Signal Output
  • • For IVECO, Mitsubishi, Case
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Fuel Metering Valve

Fuel Metering Valve

Precision fuel control for optimal combustion efficiency.

  • • High Flow Accuracy
  • • Durable Electromagnetic Coil
  • • OEM Replacement
  • • Compatible with CR Systems
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Fuel Pressure Limiter

Fuel Pressure Limiter Valve

For Denso, Bosch, Cummins – Prevents overpressure in fuel systems.

  • • Model: 095420-0230
  • • Relief Valve Function
  • • High Durability Seal
  • • 111 001 0028 Compatible
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Piezo Actuator

Piezo Actuator For Injector

High-speed response actuator for diesel injectors.

  • • Model: BK2Q9K546AG
  • • Fast Response Time
  • • Precision Fuel Dosing
  • • For Common Rail Systems
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Suction Control Valve

Suction Control Valve (SCV)

Controls fuel pump inlet for precise pressure regulation.

  • • For CAT, Komatsu, SANY
  • • Stable Flow Control
  • • Low Power Consumption
  • • Excavator & Machinery Use
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Fuel Pressure Control Valve (DRV)

Regulates common rail pressure with high precision.

  • • Real-Time Pressure Adjustment
  • • Durable Solenoid Design
  • • For Bosch & Denso Systems
  • • Prevents Over-Pressurization
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Shut-off Solenoid

For Cummins, Perkins, and other diesel engines.

  • • Reliable Engine Stop Function
  • • High-Quality Coil Insulation
  • • Vibration Resistant
  • • Long Service Life
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Why Choose Dellfei?

We combine advanced engineering, strict quality control, and global service to deliver unmatched value.

Certified Quality

ISO/TS16949 and CE certified manufacturing processes ensure every component meets international standards for safety and performance.

Global Reach

Serving clients across Africa, Americas, Asia, Europe, and Oceania with reliable logistics and responsive customer support.

Advanced R&D

Continuous innovation and testing ensure our sensors and valves deliver optimal performance in real-world conditions.

2007
Established
16+
Years Experience
50+
Countries Served
1000+
Product Models

Frequently Asked Questions

Are Dellfei products OEM replacements?

Yes, all our sensors and valves are designed as direct OEM replacements, ensuring perfect fit and function in original systems.

What certifications do you hold?

We are certified under ISO/TS16949 and CE standards, ensuring our manufacturing processes meet international quality and safety requirements.

Do you offer custom solutions?

Yes, we welcome OEM/ODM collaborations and can customize sensors and valves based on specific technical requirements.

What is your minimum order quantity?

MOQ varies by product. Please contact us directly for detailed pricing and order terms.

Get in Touch

Contact our sales team for inquiries, quotes, or technical support.

Sales Representative

Ms. Candy

+86 18758799738

dellfei@dellfei.com

WeChat: dellfei-cn

Alternative Contact

Ms. Sales

+86 18958845023

sales02@dellfei.com

WeChat: dellfeisales

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