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The engine is the heart of any heavy-duty truck, and its structural integrity depends on the smallest yet most critical components. When performing maintenance or overhaul, choosing authentic Sinotruk howo parts is non-negotiable for reliability. Among these, the cylinder head bolts hold a paramount position. The OEM part VG1500010215 represents a set of genuine, high-tensile cylinder head bolts engineered specifically for Sinotruk Howo diesel engines. These bolts are responsible for creating a perfect, leak-proof seal between the cylinder head and the engine block, withstanding extreme pressures and temperatures. Using the correct VG1500010215 bolts is not just a repair step; it’s a fundamental safeguard for your engine’s performance and longevity, preventing catastrophic failures.
Cylinder Head Bolts
Болты головки блока цилиндров
Pernos de Culata
Cylinder head bolts are the foundation of a sealed combustion chamber. They apply the massive clamping force required to keep the cylinder head gasket compressed against the engine block. This seal must contain the tremendous pressures of combustion (often exceeding 2,000 psi) and prevent the leakage of coolant, oil, and combustion gases.
In a Sinotruk Howo engine, which operates under continuous heavy loads, the significance of these bolts is magnified. The genuine VG1500010215 bolts are designed to stretch (elastically) within a precise range when torqued, maintaining a consistent clamping force even as the engine heats up and cools down through countless cycles. A failure in even one bolt can lead to head gasket failure, loss of compression, coolant contamination of oil, and ultimately, engine seizure.
High-Tensile Alloy Steel: The VG1500010215 bolts are forged from premium, heat-treated alloy steel, providing exceptional yield and tensile strength to resist stretching beyond their elastic limit and prevent fatigue failure.
Precision Thread Rolling: Threads are rolled, not cut, which creates a stronger grain structure along the thread profile, significantly enhancing fatigue resistance and ensuring smooth, accurate installation.
Controlled Friction Coatings: Specialized surface coatings are applied to achieve consistent and accurate friction coefficients. This is vital for achieving the correct clamp load when using torque-to-yield or angle tightening methods.
Heat and Corrosion Resistance: Designed to maintain their mechanical properties at the high temperatures present in the cylinder head area and resist corrosion from engine coolants and oils.
Dimensional Perfection: Each bolt in the VG1500010215 set meets exact OEM specifications for length, thread pitch, shank diameter, and head design, guaranteeing perfect fitment.
The production of genuine VG1500010215 cylinder head bolts involves state-of-the-art metallurgy and manufacturing processes. After forging, bolts undergo precise heat treatment in controlled atmospheres to achieve the required hardness and ductility balance.
Every batch is subjected to rigorous quality control tests. These include destructive testing to verify tensile strength, hardness testing across multiple points, and dimensional checks using coordinate measuring machines (CMM). Furthermore, sample bolts undergo fatigue testing, simulating millions of engine cycles to ensure they will not fail in service. This level of scrutiny ensures that the VG1500010215 set delivers absolute reliability in the most demanding applications.
The VG1500010215 bolt set is engineered for specific Sinotruk Howo engine families, commonly found in models like the Howo A7, Howo T7, and various construction vehicle variants. These bolts are typically used with WEICHAI POWER diesel engines, such as the WP10, WP12, and similar series.
It is crucial to confirm engine model and displacement before ordering. Using the correct VG1500010215 set ensures the bolt length, thread engagement, and clamping characteristics are perfectly matched to your engine’s design, which is critical for achieving the correct cylinder head gasket seal and preventing warpage.
| Parameter | Specification |
|---|---|
| OEM Part Number | VG1500010215 |
| Product Name | Cylinder Head Bolts (Set) |
| Brand | SINOTRUK Howo (Genuine) |
| Material | Heat-Treated Alloy Steel (Grade 12.9 or equivalent) |
| Component Type | Engine Fastening Component |
| Compatibility | Sinotruk Howo with WP10, WP12, etc. Engines |
| Fastener Type | Torque-to-Yield (TTY) or Precision Torque |
| Quality Standard | OEM Specifications, 100% Batch Tested |
Installing cylinder head bolts, especially torque-to-yield (TTY) types, requires strict adherence to the manufacturer’s procedure. The process for the VG1500010215 bolts typically involves a multi-stage tightening sequence.
First, all bolt holes and threads in the engine block must be meticulously cleaned and checked for damage. Bolts should be lightly oiled as specified (usually on the threads and under the washer face). The sequence usually starts with a preliminary torque (e.g., 50 Nm) in a specific criss-cross pattern to seat the head gasket evenly. This is followed by a second pass to a higher torque. Finally, for TTY bolts, each bolt is tightened an additional specified angle (e.g., 90 or 120 degrees) to achieve the precise clamp load. Never reuse old TTY bolts; always install a new VG1500010215 set.
Using non-genuine or incorrect cylinder head bolts is a high-risk practice that can lead to immediate or premature engine failure. Inferior bolts may not have the necessary tensile strength, causing them to stretch permanently or snap during installation or operation.
Even if they don’t break, incorrect bolts can lead to uneven clamping force. This results in localized high-pressure points on the head gasket, leading to leaks, or low-pressure points, allowing combustion gases to escape (blow-by). This condition rapidly degrades engine performance, causes overheating, and contaminates the cooling system and engine oil, resulting in exponentially higher repair costs.
While aftermarket bolt sets may be cheaper, they are a false economy for a component as critical as cylinder head bolts. Genuine VG1500010215 bolts are manufactured with exacting metallurgical control and surface treatments that generic bolts cannot replicate.
Aftermarket bolts often have inconsistent hardness, poor thread quality, and unreliable friction coefficients. This makes achieving the correct and uniform clamp load across all cylinders nearly impossible. The risk of a failed engine rebuild far outweighs the minimal savings from using non-OEM fasteners. The genuine VG1500010215 set provides peace of mind and is the only recommended choice for a reliable, long-lasting repair.
Investing in a genuine VG1500010215 cylinder head bolt set contributes significantly to lower total cost of ownership for your Sinotruk Howo truck. A proper cylinder head installation with the correct bolts ensures optimal engine efficiency, maintains fuel economy, and prevents related failures.
It eliminates the need for costly rework due to gasket leaks or head warping. For fleet managers, this translates directly to maximum vehicle uptime and predictable maintenance costs. The reliability offered by these genuine components supports the Sinotruk Howo’s reputation for durability in the most challenging transport and construction environments.
In engine rebuilding, there is no room for compromise on foundational components. The cylinder head bolts, part number VG1500010215, are the literal fasteners holding your engine’s integrity together. Choosing the genuine Sinotruk Howo OEM set is a technical necessity, not an option.
These bolts embody precision engineering, material science, and rigorous testing to deliver the performance your truck’s engine was designed for. Whether you are a professional mechanic or a fleet maintenance supervisor, specifying the VG1500010215 for every cylinder head service is the definitive step towards a successful, durable, and reliable engine overhaul. Trust the genuine part to secure your engine’s future performance.
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