The 080-03100-6273 cylinder head assembly is the cornerstone of your HOWO engine’s combustion process, directly influencing power output, fuel efficiency, and emissions performance. Its primary functions include sealing the combustion chamber, housing the valve train, and providing critical cooling passages that maintain optimal operating temperatures. In heavy‑duty diesel engines, the cylinder head is subjected to extreme thermal and mechanical stresses – from the intense heat of combustion to the repeated high‑pressure cycles of the pistons. A cracked or warped cylinder head can lead to loss of compression, coolant leakage, oil contamination, and catastrophic engine failure. By installing the genuine 080-03100-6273 cylinder head assembly, you restore factory‑specified clearances, sealing integrity, and cooling efficiency, ensuring reliable operation and extended engine life.
Superior Combustion Efficiency
Precision‑machined combustion chambers optimise swirl and turbulence for complete fuel burn and maximum power.
Optimised Heat Dissipation
Designed with efficient coolant flow paths to maintain stable operating temperatures and reduce thermal stress.
High‑Strength Material
Manufactured from high‑grade cast iron with advanced alloying for exceptional fatigue resistance and durability.
OEM‑Exact Fit
Manufactured to Sinotruk’s original specifications – direct replacement with no modifications.
| Parameter | Specification |
|---|---|
| OEM Number | 080-03100-6273 |
| Product Name | Cylinder Head Assembly |
| Brand | HOWO / Sinotruk |
| Material | High‑strength cast iron (GG25 / HT250 equivalent) |
| Valves per Cylinder | 4 (2 intake / 2 exhaust) |
| Operating Temperature | -40°C to +150°C |
| Max. Cylinder Pressure | ≥ 180 bar |
| Weight | ~ 45 kg (complete assembly) |
| Quality Standard | Original Sinotruk / HOWO OEM specification |
The 080-03100-6273 cylinder head assembly is a direct replacement for the original component used in a wide range of HOWO and Sitrak heavy‑duty diesel engines. It is commonly found in:
The 080-03100-6273 cylinder head assembly is manufactured to the highest quality standards, ensuring it outperforms generic aftermarket alternatives. Cast from premium grey iron with controlled alloy composition, the head offers excellent thermal conductivity, high strength at elevated temperatures, and outstanding resistance to thermal fatigue. The combustion chambers, valve seats, and guides are precision‑machined to exacting tolerances, ensuring optimal gas flow and valve sealing. The cooling passages are designed to minimise hot spots and ensure uniform heat distribution, reducing the risk of cracking and distortion. Each cylinder head is pressure‑tested to verify cooling jacket integrity and inspected for dimensional accuracy to guarantee perfect fitment. This commitment to quality translates into reliable engine performance, reduced fuel consumption, and extended overhaul intervals.
Precision Casting
State‑of‑the‑art casting process ensures consistent wall thickness and material density for uniform strength.
Advanced Heat Treatment
Stress‑relieving heat treatment minimises residual stresses and prevents distortion during engine operation.
100% Pressure Tested
Every cylinder head is tested for cooling jacket leakage and combustion seal integrity before delivery.
Genuine OEM Quality
Built to Sinotruk’s original specifications – guaranteed fit, form, and function.
Installing the 080-03100-6273 cylinder head assembly requires specialised knowledge and should be performed by a qualified engine technician. Always refer to the appropriate workshop manual for your HOWO or Sitrak model. Before installation, ensure the cylinder block deck surface is clean, flat, and free from corrosion. Check the cylinder head for any shipping damage and verify that all valve seats and guides are intact. Use a new cylinder head gasket and apply the correct thread sealant to head bolts as specified in the workshop manual. Tighten the head bolts to the specified torque in the correct sequence to ensure even clamping force. After installation, fill the cooling system with the recommended coolant mixture and bleed any air from the cooling passages. Perform a compression test and check for coolant or oil leaks after the engine has been warmed up.
Choosing the 080-03100-6273 genuine cylinder head assembly is an investment in the long‑term reliability and performance of your HOWO or Sitrak truck. Inferior aftermarket heads often use lower‑grade materials, imprecise castings, and inadequate heat treatment – leading to premature cracking, warping, and costly engine failures. By using a genuine OEM component that adheres to Sinotruk’s exacting standards, you guarantee perfect fitment, consistent combustion performance, and maximum durability. Fleet operators and workshop professionals worldwide trust this cylinder head to maintain the integrity of their engines, reduce unplanned downtime, and lower overall maintenance costs. With its proven quality and reliability, it is the definitive choice for those who demand excellence.
“We have standardised on the 080-03100-6273 cylinder head assemblies for all our engine overhauls across the HOWO‑7 fleet. The fit is perfect, the quality is outstanding, and we have seen a significant reduction in head‑related failures. This is the only cylinder head we trust for our fleet.”
The 080-03100-6273 cylinder head assembly is designed to fit a comprehensive range of HOWO and Sitrak heavy‑duty trucks, including the most popular models. It is a direct replacement for the original head fitted at the factory, ensuring a seamless swap without any modifications. Always confirm the OEM number 080-03100-6273 on your original cylinder head or by cross‑referencing your vehicle’s VIN with the Sinotruk parts catalogue. For any uncertainty, consult your local HOWO or Sitrak dealer with your chassis number.
HOWO and Sitrak trucks are subjected to the most punishing environments – from the freezing cold of northern winter routes to the searing heat of desert highways, from constant vibration to the corrosive effects of road salts and moisture. The 080-03100-6273 cylinder head assembly is engineered to withstand these extremes. Its high‑strength cast iron construction and advanced alloy composition resist thermal fatigue and cracking, even under sustained high‑load operation. The precision‑machined valve seats and guides maintain their geometry and sealing integrity across a wide temperature range, ensuring consistent compression and minimising oil consumption. The optimised cooling passages prevent localised hot spots, reducing the risk of head distortion and gasket failure. This cylinder head is built to deliver reliable, maintenance‑free performance for the entire service life of your engine, reducing unplanned downtime and repair costs.
Extreme Temperature Tolerance
Reliable from -40°C to +150°C – maintains dimensional stability and structural integrity.
Vibration & Shock Resistant
Robust construction withstands constant engine vibration and combustion pressures without fatigue failure.
Corrosion Protection
Advanced material composition and surface treatment provide long‑term resistance to coolant and oil degradation.
High Pressure Capability
Designed to withstand in‑cylinder pressures exceeding 180 bar, ensuring reliable sealing and combustion.
The 080-03100-6273 cylinder head assembly is supplied in robust, purpose‑designed packaging to ensure safe delivery and convenient storage. Each cylinder head is individually wrapped in anti‑corrosion material and secured within a heavy‑duty carton with foam inserts to prevent any damage during transit. The package includes the fully assembled cylinder head complete with valve seats, guides, and necessary pre‑installation components (valves and springs may be supplied separately depending on kit configuration). Bulk ordering options are available for workshops, fleet maintenance depots, and OEM service centres, offering significant cost savings and streamlined inventory management. Every pack is clearly labelled with the OEM number 080-03100-6273, product name, and applicable vehicle models for easy identification. Always verify the OEM number on the label before installation to guarantee you are using the correct genuine component.
OEM: 080-03100-6273 | Genuine HOWO / Sitrak Cylinder Head Assembly
Choose 080-03100-6273 cylinder head assembly – the professional‑grade engine component that delivers superior combustion efficiency, exceptional durability, and reliable performance for your HOWO or Sitrak truck.
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