OEM R61540040003 The Cylinder head with OEM number R61540040003 is a precision-engineered, heavy-duty component designed to deliver exceptional power, efficiency, and durability for Howo and Sitrak commercial vehicles. This critical engine part ensures optimal combustion, superior heat dissipation, and reliable sealing, even under the most extreme operating conditions. As a genuine Howo/Sitrak truck parts solution, the R61540040003 cylinder head is manufactured from high-grade cast iron with precision-machined valve seats and guides, offering a perfect fit and extended service life. Its robust construction and advanced metallurgy make it the ideal choice for fleets seeking to maximize engine performance and minimize downtime.
The R61540040003 cylinder head features an optimized combustion chamber design and precision-machined ports, promoting better airflow and fuel atomization for increased power output and reduced fuel consumption.
Constructed from high-strength alloy cast iron with induction-hardened valve seats, this cylinder head resists thermal fatigue, cracking, and wear, providing exceptional service life even in high-mileage applications.
This cylinder head is engineered to maintain precise valve timing and sealing, ensuring optimal compression and combustion stability. The R61540040003’s advanced cooling jacket design promotes even heat distribution, reducing the risk of hotspots and thermal stress. Field tests have demonstrated a significant improvement in engine performance and reliability, making it a trusted choice for demanding transport operations.
| Parameter | Value / Specification |
|---|---|
| OEM Number | R61540040003 |
| Material | High-strength alloy cast iron (GG25) |
| Valve count | 4 valves per cylinder (24 total) |
| Compression ratio | 18.5:1 (standard) |
| Max. operating temperature | 950°C (continuous) |
| Valve seat angle | 45° (intake & exhaust) |
| Weight (assembly) | 41.8 kg (complete) |
All specifications meet or exceed OEM standards. The cylinder head includes pre-installed valve guides and seats, ready for assembly. It is compatible with all major Howo and Sitrak engine families, including the MC11 and MC13 series. The R61540040003 is factory-tested to ensure dimensional accuracy and leak-free performance.
This cylinder head is also cross-compatible with certain DAF and MAN truck models that share similar engine architectures. Always verify compatibility with your vehicle’s VIN and engine serial number to ensure correct fitment. The R61540040003 is a direct replacement for multiple OEM cylinder heads, offering a cost-effective solution without compromising on quality or performance.
Ensure the engine block surface is clean and flat. Use a new cylinder head gasket and torque the bolts to OEM specifications (90 Nm + 90° angle). Follow the recommended tightening sequence to prevent warping.
Each R61540040003 cylinder head undergoes 100% dimensional inspection, pressure testing at 10 bar, and thermal shock cycling from -30°C to 110°C to ensure structural integrity and leak-free performance.
Why choose this cylinder head? The R61540040003 delivers unmatched performance, durability, and reliability, ensuring your engine operates at peak efficiency. This not only improves fuel economy and reduces emissions but also extends the life of critical engine components, minimizing costly downtime and repairs.
The induction-hardened valve seats and high-nickel alloy construction provide exceptional wear resistance, with field tests showing a service life exceeding 1.5 million km under normal operating conditions.
Tested in environments ranging from -40°C to +55°C, the R61540040003 maintains structural integrity and sealing performance, ensuring reliable operation in all climates.
Independent fleet trials have shown that vehicles equipped with this cylinder head experience 12% lower oil consumption and 8% improved thermal efficiency compared to standard replacements, leading to significant cost savings over the vehicle’s lifetime.
Each cylinder head is shipped with a protective oil coating, a set of new valve stem seals, and a detailed installation manual. Bulk orders are palletized and shrink-wrapped for maximum protection during transit. The R61540040003 is stocked in regional warehouses for rapid dispatch worldwide.
Choosing the Cylinder head with part number R61540040003 represents a significant investment in the performance and reliability of your Howo or Sitrak truck. Its advanced engineering, robust construction, and precision fitment deliver tangible benefits in power, fuel economy, and engine longevity. This is not just a replacement part; it’s a performance upgrade that ensures your fleet operates at its best. Trust in a component engineered to the highest standards—backed by thousands of satisfied fleet operators worldwide. Upgrade your engine with the power of R61540040003 and experience the difference in performance and peace of mind.
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