
Headquarters & machining
CNC machining, assembly and testing of cylinder heads, housings and brackets.
- Floor area
- 8,000+ m²
- Focus
- Heads, housings
Shiyan Fuyuan Auto Parts machines and casts aluminum and cast-iron engine components for commercial vehicles. IATF 16949 certified, with a track record supplying the U.S. market.
Name update: formerly Hubei Shiyan Pingshun Industry & Trade Co., Ltd. Same team, plants and quality system.
We cast, heat-treat, machine, assemble and test under one quality system, so complex engine parts arrive ready to install.
Vertical and horizontal machining centers and CNC lathes for complex cast housings, heads and brackets.
Low-pressure, tilt-gravity and high-pressure die casting, with in-house melting and T6 heat treatment.
Machining, valve seat and guide installation, cup-plug pressing, washing and 100% leak testing.
Height gauges, profilometer, electronic plug gauges and air-tightness test benches at the line.
Spectrometer, metallographic microscope, tensile tester and hydrogen analyzer for every melt.
Process planning, fixture design and sampling from your drawings, with PPAP documentation on request.
A selection of components we machine or cast today for Cummins- and Renault-series diesel engines, fuel systems and steering.












Now in production. Thin, closely spaced cooling fins and complex internal passages, finished with precision machining and valve train installation.



Each operation is verified before a part moves on. Only conforming parts reach the next step.
Certified automotive quality management system covering incoming material, process control, inspection and shipping. Certificate available on request.
Cylinder head process flow





CNC machining, assembly and testing of cylinder heads, housings and brackets.

Finish machining of transmission gear blanks for heavy-truck programs.

Low-pressure, gravity and die casting with T6 heat treatment and pump-body machining.

We machine cast-iron cylinder heads for a U.S. commercial-vehicle customer. Our production has been audited on site by the customer's team with very positive results.
Share your part drawings, annual volume and target timing, and our engineering team will review manufacturability and return a quotation.