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A sealed and pressurized cooling system is essential for optimal engine temperature control. As a fundamental securing component among genuine Sinotruk howo parts, the Radiator Hose Clamps, identified by OEM number 190003989308, ensure leak-free connections. These clamps secure radiator and heater hoses to their respective fittings. The genuine 190003989308 clamps provide consistent clamping force and corrosion resistance. They are essential for maintaining system pressure and preventing coolant loss.
Radiator Hose Clamps
Хомуты шлангов радиатора
Abrazaderas para mangueras del radiador
The Radiator Hose Clamps, part number 190003989308, are critical fasteners in the engine cooling circuit. They are installed at the ends of rubber or silicone coolant hoses. Their primary role is to create a tight, sealed connection.
This connection is between the hose and a metal pipe, radiator neck, or engine inlet/outlet. The clamp applies radial pressure to the hose. This prevents coolant from leaking under pressure and temperature cycles. The genuine 190003989308 ensures this seal.
A single failed clamp can lead to a complete coolant loss. This causes rapid engine overheating and potential severe damage. Therefore, these small components, part 190003989308, play a disproportionately large role in engine protection.
Leak-Proof Sealing Under Pressure
Provides consistent, even pressure around the hose circumference, creating a perfect seal that withstands high coolant pressure and temperature fluctuations.
Corrosion-Resistant Construction
Made from high-quality stainless steel or plated materials, the 190003989308 resists rust and degradation from coolant and under-hood chemicals.
Secure and Vibration-Proof
The design prevents loosening due to engine vibration and thermal cycling, maintaining clamp tension and the integrity of the hose connection over time.
Easy Installation and Adjustment
Engineered for simple installation with standard tools, allowing for precise tension adjustment to prevent hose damage while ensuring a complete seal.
| Parameter / Feature | Specification / Description |
|---|---|
| OEM Part Number | 190003989308 |
| Component Name | Radiator Hose Clamps (Coolant Hose Clamps) |
| Brand & Application | SINOTRUK Howo, for upper/lower radiator hoses, heater hoses, and other coolant connections. |
| Primary Function | Securely fasten coolant hoses to fittings, creating a pressure-tight seal to prevent leaks. |
| Clamp Type | Worm-drive (screw-type) clamp or constant-tension spring clamp (as per OEM specification). |
| Material | High-grade stainless steel or zinc-plated steel for corrosion resistance. |
| Size Range | Designed to fit the specific hose diameters used in SINOTRUK Howo cooling systems. |
| Drive Type | Slotted screw (for screwdriver) or hex head (for socket/wrench), as per OEM design. |
| Product Condition | New, 100% Genuine OEM Part, typically sold in sets or individually as required. |
A failing radiator hose clamp, part 190003989308, presents clear and urgent warnings. Visible coolant leakage at the hose connection point is the primary symptom. You may see green, red, or orange fluid dripping from under the vehicle.
A low coolant level in the reservoir, requiring frequent top-ups, indicates a leak. Sweet-smelling steam from the engine bay is another sign. Overheating indicated on the temperature gauge is a critical result of coolant loss.
The clamp itself may show severe corrosion, a broken band, or a stripped screw. A hose that is easily twisted by hand at the connection indicates insufficient clamping force. These signs mean the 190003989308 clamp needs immediate replacement.
Ignoring a leaking clamp can lead to catastrophic engine failure from overheating. It also creates an environmental hazard and increases operating costs. Replacing clamps with genuine 190003989308 parts during hose service is a best practice.
Replacing a hose clamp is a straightforward task. Always allow the engine to cool completely before starting. Place a drain pan underneath the work area to catch any spilled coolant. Loosen the old clamp using a screwdriver or socket.
Slide the clamp back along the hose. If replacing the hose, remove it completely. Clean the metal fitting of any old residue or corrosion. Slide the new genuine 190003989308 clamp onto the hose before connecting the hose to the fitting.
Push the hose fully onto the fitting until it seats against the stop. Position the clamp about 1-2 mm from the end of the hose. Tighten the clamp securely, but do not overtighten. Overtightening can cut the hose or strip the clamp.
Refill the cooling system with the correct coolant mixture. Start the engine, check for leaks, and monitor the temperature gauge. Using the correct OEM clamp 190003989308 ensures proper tension and longevity of the connection.
Hose clamps are often overlooked during routine maintenance. However, they are critical for system integrity. The cooling system operates under pressure to raise the coolant’s boiling point. A proper seal is required to maintain this pressure.
During every coolant service or hose inspection, the condition of the 190003989308 clamps should be checked. It is recommended to replace clamps whenever a hose is replaced. This prevents future leaks from a fatigued old clamp.
Using the correct clamp type and size is vital. A clamp that is too large will not seal; one that is too small can damage the hose. The genuine 190003989308 is specified for the exact hose diameter and operating conditions.
The genuine 190003989308 clamp is made from materials tested for the cooling system environment. The metal resists corrosion from coolant additives. The band is evenly formed and the screw mechanism is durable.
Non-genuine clamps may use lower-grade steel that rusts quickly. Their bands can have sharp edges that cut into hoses. The screw threads may strip easily, leading to a loss of clamping force. This compromises the entire cooling system.
The precise dimensions of the 190003989308 ensure it fits the OEM hose and fitting correctly. For a component that costs little but protects an expensive engine, choosing the genuine part is the only sensible choice.
The Radiator Hose Clamps, OEM number 190003989308, are small components with a massive responsibility. Their role in maintaining a sealed, pressurized cooling system is fundamental to engine health and reliability.
Investing in genuine 190003989308 clamps guarantees the material quality, corrosion resistance, and clamping performance required for heavy-duty operation. Protect your engine from preventable coolant loss by using authentic SINOTRUK Howo OEM parts for every connection.
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