Introduction of WeiYuan Company
Founded in 1952, Weiyuan Fuel injection equipment Co.,ltd. is a professional manufacturer of fuel injection system accessories for auto and marine diesel engines. The headquarter of WY company is located in Donggang city,Liao Ning province of China, covering an area of 15,000 ㎡, with a building area of 11,300 ㎡. We has more than 300 employees in two production workshops, two auxiliary workshops, one technical department, two quality inspection office, one financial department, one supply department, one measurement room, two factory offices,etc.

The sub-office named Shenyang Wei Yuan fuel injection equipment Co.,ltd. is located in Shenyang City,Liao Ning province of China. It has 6 offices with more than 30 employees,including sales department, purchasing department, technical department, financial department, logistics department,etc.

Our main products lines include:
Auto Electric/ ommon Rail System Euro IIV-V: Complete injectors and pumps, as well as spare parts for brands such as CATERPILLAR/CAT, CUMMINS, DENSO, DELPHI, BOSCH, SIEMENS, MTU, etc. We offer a variety of components, including nozzles, sensors, control valves, solenoids, repair kits, shafts, and more.
Auto EURO II System: Plungers, nozzles, delivery valves, head rotors (VE pump and DAP pump), repair kits, turbo cores, turbos, pumps, injectors, and more.
Marine engine System: Plungers, nozzles, delivery valves, for engines like SKL, MAN, B&W, NIIGATTA, SULZER, AKASAKA, DAIHATSU, YANMAR, HANSHIN, etc.






At WY Company, we are guided by the principle of "customer first," placing the utmost importance on meeting and exceeding customer expectations.
Till now, we have been working with customers from more than 100 countries all over the world, and have established long term cooperated relationships with most of them.
We attend exhibitions all over the world, to create the chance to meet our customers any discuss business with them face to face. Like Bauma fair, Automechanika exhibitions, Canton fairs, etc.


We have established strong partnerships with numerous enterprises, fostering collaborative relationships that enable us to fully satisfy our customers' requirements.Like BYC, WEIFU,LIWEI,BEFRAG, NANYUE, CUMMINS,KANG DA, HUI ER, YTO, WEICHAI, YUCHAI, etc.We can also provide original parts like Bosch, Denso, Delphi, Simens, Yanmar, etc.

In our pursuit of manufacturing excellence, we prioritize the implementation of top-quality production processes. Our dedicated heat treatment workshop is equipped with cutting-edge technology, ensuring stable forming techniques, advanced equipment, and rigorous inspection procedures. By employing carburization, we enhance the surface hardness and wear resistance of our components, extending their operational lifespan. Our products demonstrate performance that rivals that of original manufacturers.


We take great pride in offering outstanding after sales service, providing prompt assistance and resolving any challenges our customers may encounter.
Through our unwavering commitment to continuous innovation and breakthroughs, we strive to deliver exceptional product development and provide our customers with unparalleled experiences.
WY looks forward to multifaceted cooperation with you!
