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To maintain optimal cooling system pressure and prevent coolant loss, genuine Sinotruk howo parts are the reliable choice for professional fleets. The LG1614860010-G Cooler Cap is a precision-engineered pressure cap designed specifically for the expansion tank, ensuring that the cooling system operates at the correct pressure to raise the boiling point and prevent cavitation. Manufactured from high-quality brass and stainless steel, this cap features a calibrated pressure relief valve that opens at the designated set point, allowing excess pressure to escape safely. The LG1614860010-G is built to OEM specifications, with a durable rubber seal that maintains a leak-proof fit even after thousands of thermal cycles, making it an essential replacement for SINOTRUK HOWO heavy-duty trucks.
OEM reference LG1614860010-G – direct-fit cooler cap for SINOTRUK HOWO cooling systems.
Cooler Cap (EN)
Крышка радиатора (RU)
Tapa del radiador (ES)
The cooler cap plays a vital role in regulating the cooling system’s pressure. As the engine warms up, coolant expands, increasing pressure. The LG1614860010-G cap’s spring-loaded valve opens at the preset pressure (typically 0.9–1.1 bar), allowing excess coolant to flow into the overflow tank. This prevents system over-pressurization and protects hoses, the radiator, and the heater core from damage.
Constructed from corrosion-resistant materials, the cap features a high-temperature rubber gasket that ensures a tight seal against the tank neck. The double-seal design prevents coolant evaporation and contamination, maintaining the system’s integrity. The LG1614860010-G is a durable, direct-fit replacement that restores pressure control and prevents overheating.
The calibrated valve opens at the exact specified pressure, maintaining optimal system pressure for efficient cooling and preventing boil-over.
The high-quality rubber gasket and precision-machined sealing surface ensure a tight fit, preventing coolant loss and air ingress.
Built with brass and stainless steel components, this cap resists corrosion and fatigue, ensuring long service life even in harsh environments.
This cap matches the original bayonet mount and dimensions, enabling a straightforward replacement without tools.
The engineering of this cooler cap focuses on precise pressure control and reliability. The valve spring is calibrated with a tolerance of ±0.05 bar, ensuring that the system maintains the correct pressure across a wide range of operating temperatures. The cap’s double-seal design includes a primary seal for the pressure chamber and a secondary seal for the overflow port, preventing any leakage even when the valve is partially open. With the LG1614860010-G, the cooling system’s boiling point is raised by approximately 10°C per bar of pressure, effectively preventing localized boiling and cavitation in the water pump.
Installation is simple: ensure the engine is cool, remove the old cap by turning it counterclockwise, and install the new LG1614860010-G by aligning the tabs and twisting clockwise until it clicks into place. Always inspect the tank neck for damage or debris before installation. After installation, start the engine and check for any leaks around the cap. A genuine OEM cap guarantees that the cooling system maintains the correct pressure, protecting the engine from overheating and corrosion.
| OEM Part Number | LG1614860010-G |
| Product Name | Cooler Cap (Pressure Cap) |
| Brand / Application | SINOTRUK HOWO (Expansion tank) |
| Pressure Rating | 0.9 bar (13 psi) – standard, also available 1.1 bar |
| Mount Type | Bayonet (quarter-turn) |
| Weight | 0.12 kg (0.26 lbs) |
| Material | Brass valve body, stainless steel spring, EPDM rubber seal |
| Operating Temperature | -40°C to +120°C |
| Seal Type | Double-seal (primary + secondary) |
All pressure ratings and dimensions are verified against SINOTRUK HOWO factory specifications. Manufactured under ISO 9001:2015 quality control.
Over time, the cap’s rubber seal can harden or crack, and the spring can lose tension, causing the cap to fail to maintain the correct pressure. A faulty cap can lead to coolant loss, overheating, and even engine damage. Replacing it with the LG1614860010-G restores pressure control and prevents costly repairs. This is especially important in older vehicles or after a cooling system overhaul.
Regular testing of the cap using a pressure tester is recommended during routine maintenance. If the cap does not hold pressure or the valve opens too early or too late, it should be replaced. The LG1614860010-G offers reliable performance and is an affordable insurance policy against cooling system failure.
Inspect the cap’s rubber seal for any signs of wear, cracking, or deformation. Clean the sealing surfaces on the tank neck and the cap with a soft cloth. Never use abrasive cleaners. Test the cap’s pressure retention with a cooling system pressure tester at least once a year. If the cap fails the test, replace it immediately.
Always replace the cap if you notice coolant residue on the tank or if the cap feels loose when tightened. The LG1614860010-G is a critical safety component that ensures the cooling system operates within safe parameters. Using a genuine OEM cap guarantees proper pressure control and protects your engine from overheating.
Coolant leakage around the cap
Engine overheating or temperature fluctuations
Collapsed or swollen radiator hoses
If you observe any of these signs, inspect the cap and the cooling system. Replace the cap with the LG1614860010-G immediately if it shows any wear or fails the pressure test. A faulty cap can lead to catastrophic engine failure. A genuine OEM cap provides peace of mind and ensures your cooling system functions correctly.
Summary: The LG1614860010-G Cooler Cap is a small but crucial component that maintains the cooling system’s pressure, preventing overheating and protecting the engine. Its durable construction and precise pressure relief make it the ideal replacement for worn or faulty caps. Choose OEM quality to keep your SINOTRUK HOWO engine running at the right temperature.