deutz engine 912 1011 1012 and 1013 cylinder head , Iran

Comparison of genuine OE deutz cylinder head with Chinese samples

The comparison between genuine Deutz cylinder heads made from PE Precision Engineering cast material and Chinese aftermarket copies reveals significant engineering differences. Genuine PE heads have a certified tensile strength of 320–360 MPa and maintain dimensional tolerances within ±0.05 mm, ensuring optimal sealing and stable compression. Chinese replicas typically exhibit 260–300 MPa tensile strength with tolerances around ±0.15 mm, increasing the risk of combustion gas leakage. Genuine heads feature precisely machined combustion chambers with volume variation under 1%, while many replicas exceed 3%, reducing thermal efficiency. Valve seats in genuine heads are hardened to HRC 58–62 with concentricity under 0.02 mm, whereas aftermarket seats often fall below HRC 50 and show up to 0.05 mm runout, accelerating valve wear.

In thermal and fatigue performance tests, genuine Deutz PE cylinder heads dissipate heat more uniformly, limiting peak surface temperatures to 260–275°C under full load. Replica parts often exceed 290°C, raising the risk of warping and gasket failure. Genuine heads undergo controlled shot peening and stress-relief treatment, achieving fatigue life beyond 10,000 operating hours, while many Chinese copies lack these processes, reducing service life by 25–40%. Original PE heads follow ISO 9001 quality checks and calibrated inspections, resulting in superior reliability, fuel efficiency, and long-term durability compared to aftermarket alternatives.