The water pump sealing gasket is a small but mission‑critical component that ensures the coolant system remains sealed, efficient, and reliable. The 1001134455 Water Pump Sealing Gasket from HOWO is engineered to deliver a perfect, leak‑proof seal between the water pump and the engine block, preventing coolant loss and maintaining optimal engine temperatures. As a vital Howo/Sitrak truck parts component, this gasket is manufactured from high‑quality, coolant‑resistant material with a precision‑formed design that ensures a perfect factory fit, outstanding compression resistance, and long‑term reliability. Whether you are replacing a worn gasket during a water pump service or performing a full engine overhaul, the 1001134455 guarantees a reliable seal, consistent coolant flow, and extended engine life – making it the trusted choice for professional workshops and fleet operators worldwide.
The water pump sealing gasket provides the essential barrier that prevents coolant from leaking at the joint between the water pump and the engine block. The 1001134455 is specifically designed to withstand the high temperatures, pressure fluctuations, and corrosive nature of modern engine coolant, ensuring a durable seal that maintains cooling system efficiency. A compromised gasket can lead to coolant loss, engine overheating, and costly repairs. HOWO has engineered this gasket with a precision‑molded, heat‑resistant material that conforms perfectly to the mating surfaces, filling any microscopic imperfections to create a positive, leak‑free seal. Its robust construction resists compression set, cracking, and swelling, providing long‑term sealing performance. With the 1001134455, you can be confident that your water pump is securely sealed, protecting your engine from thermal stress and ensuring reliable operation.
Zero Leaks
Positive Seal
Heat Resistant
Up to 150°C
OEM Fit
Exact Match
Compression Set
Long Life
The 1001134455 water pump sealing gasket is manufactured to the highest OEM standards, incorporating advanced materials and precision engineering. Below are the complete technical specifications for this essential cooling system component.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 1001134455 | Exact Match |
| Part Name | Water Pump Sealing Gasket | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / MC11/MC13 | Water pump flange |
| Material | Fiber‑reinforced rubber (NBR/EPDM) | With steel carrier |
| Thickness (Compressed) | 2.0 mm | Optimal sealing |
| Temperature Range | -40°C to +150°C | Extreme duty |
| Coolant Resistance | Excellent | Ethylene glycol & water |
| Sealing Pressure | Up to 2.0 bar | Coolant system |
| Weight | 0.04 kg | Lightweight |
| Warranty | 12 Months | Manufacturer Guarantee |
The 1001134455 water pump sealing gasket is produced using advanced material compounding and precision molding techniques. The rubber formulation is specifically engineered to resist the aggressive additives and high temperatures of modern engine coolants, maintaining its elasticity and sealing properties over thousands of operating hours. The integrated steel carrier provides structural support, preventing the gasket from extruding under clamping pressure and ensuring a consistent seal even on slightly warped flanges. The precision‑molded sealing beads concentrate the clamping force exactly where it is needed, creating a high‑integrity barrier against coolant leakage. Each gasket is manufactured to exacting dimensional tolerances, guaranteeing a perfect fit with the water pump and engine block. The gasket is also designed to accommodate the thermal expansion differences between the aluminium pump and the cast iron engine, maintaining a reliable seal throughout the engine’s operating temperature range. This meticulous engineering ensures that the 1001134455 provides a durable, leak‑free seal that helps protect your engine and the environment.
The 1001134455 water pump sealing gasket is specifically designed for HOWO heavy‑duty trucks equipped with MC11 or MC13 engines, including T7H, A7, and derivative models. It directly replaces the original gasket with identical shape, bolt hole pattern, and sealing surface dimensions, ensuring a straightforward installation without modifications. The gasket is compatible with both cast iron and aluminium water pumps and works seamlessly with the factory coolant hoses and thermostat housing. This gasket is also compatible with many Sinotruk and other commercial vehicles that share the same engine cooling architecture. To confirm fitment, always cross‑reference the OEM number on your existing gasket with 1001134455. If they match, this component will integrate seamlessly. Keeping this gasket in your spare parts inventory enables rapid water pump service, minimising downtime and ensuring your engine’s cooling system remains sealed and protected.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
MC11/MC13
Engine Series
Direct Replacement
No Modifications
Replacing a worn, hardened, or leaking water pump gasket with the 1001134455 immediately eliminates coolant seepage, maintaining proper coolant levels and preventing the risk of overheating. The superior sealing characteristics ensure that the cooling system pressure remains stable, allowing the coolant to circulate efficiently and transfer heat away from the engine. The robust construction and coolant‑resistant material also mean that the gasket will not degrade over time, providing a long‑lasting seal that reduces the need for frequent re‑torquing or replacement. A properly sealed water pump also contributes to a cleaner engine compartment, reducing the risk of coolant‑related corrosion and environmental contamination. For fleet operators, a reliable water pump gasket reduces maintenance costs, minimises coolant loss, and helps maintain the engine’s performance and efficiency. By investing in the 1001134455, you ensure that your HOWO engine’s cooling system remains sealed and reliable, mile after mile.
Installing the 1001134455 water pump sealing gasket is a straightforward procedure. Begin by safely draining the coolant to a level below the water pump. Remove the bolts securing the water pump and carefully separate the pump from the engine block. Clean both mating surfaces thoroughly, removing all old gasket material, dirt, and residue. Ensure the surfaces are dry and free from any contaminants. Position the new gasket onto the water pump or the engine flange, aligning the bolt holes. Some gaskets feature locating tabs to hold them in place during installation. Reinstall the water pump and tighten the bolts in a cross‑pattern to the manufacturer’s specified torque (typically 20‑25 Nm). Refill the cooling system with the correct coolant mixture, start the engine, and check for any leaks. Periodically inspect the gasket for signs of leakage or damage during routine maintenance. With proper installation, the 1001134455 will provide years of reliable sealing.
Pro Tip: When installing the new gasket, always use a torque wrench and follow the specified tightening sequence to ensure even compression. Over‑tightening can deform the gasket, while under‑tightening can cause leaks. The 1001134455 is designed to achieve an optimal seal with the correct clamping force.
Genuine HOWO components are engineered to the highest standards, and the 1001134455 water pump sealing gasket is no exception. Aftermarket gaskets often use inferior rubber compounds that harden, crack, or lose their sealing ability over time, leading to leaks and potential engine damage. HOWO’s gasket is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 1001134455, you benefit from HOWO’s rigorous testing, including compression set, coolant resistance, and temperature cycling tests. This ensures that the gasket meets the demanding requirements of heavy‑duty trucking. Moreover, genuine parts are backed by a comprehensive warranty and supported by HOWO’s global network, giving you confidence in your purchase.
OEM Authentic
Factory Quality
Long Service
Extended Life
Global Standard
Trusted Worldwide
Q: Which vehicles use the 1001134455 water pump sealing gasket?
A: The 1001134455 is designed for HOWO T7H, A7, and other models with MC11/MC13 engines, as well as many Sinotruk trucks with the same cooling system configuration.
Q: What are the symptoms of a failing water pump gasket?
A: Visible coolant leaks around the water pump, low coolant level warnings, engine overheating, and the smell of coolant are common indicators.
Q: Can I reuse the old gasket?
A: No, the 1001134455 is a single‑use gasket. Once compressed, it may not provide a reliable seal if reused. Always install a new gasket when servicing the water pump.
Q: How do I verify the correct part?
A: Check the OEM number on your existing gasket. If it matches 1001134455, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 1001134455 Water Pump Sealing Gasket today! Explore our complete selection of genuine HOWO and Sinotruk cooling system components at Howo/Sitrak truck parts and keep your water pump sealed and reliable.
The 1001134455 Water Pump Sealing Gasket from HOWO is a testament to precision engineering and uncompromising quality. By choosing this genuine component, you ensure that your engine’s cooling system remains sealed and protected, preventing costly leaks and maintaining optimal coolant circulation. Whether you are a professional mechanic or a fleet manager, this gasket offers the performance, durability, and exact fit that you can rely on. Trust HOWO – the benchmark for excellence in heavy‑duty truck components – and experience the difference that genuine quality makes.
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