The cooling system’s integrity relies on every seal holding firm, and the water-outlet pipe gasket is a critical component that prevents coolant leaks at the engine block-to-pipe interface. The 1000544065 Water-outlet pipe gasket from HOWO is engineered to deliver exceptional sealing performance, high-temperature resistance, and a precise factory fit, ensuring that your engine’s cooling system operates reliably and efficiently under the most demanding conditions. As a vital Howo/Sitrak truck parts component, this gasket is manufactured from premium-quality, heat-resistant material with a reinforced core, providing outstanding compression set resistance and long-lasting leak protection. Whether you are replacing a worn gasket during a cooling system service or performing an engine overhaul, the 1000544065 guarantees a perfect seal, consistent coolant flow, and extended engine life – making it the trusted choice for professional workshops and fleet operators worldwide.
The water-outlet pipe gasket seals the connection between the engine block or cylinder head and the outlet pipe that directs coolant to the radiator or thermostat housing. The 1000544065 is specifically engineered to withstand the high temperatures, pressure fluctuations, and corrosive nature of engine coolant, ensuring a reliable seal that prevents leaks and maintains proper cooling system pressure. A failing gasket can lead to coolant loss, engine overheating, and costly repairs. HOWO has designed this gasket with a precision-molded shape that matches the original flange geometry, incorporating a compressible sealing bead that conforms to minor surface irregularities for a positive seal. The gasket material is formulated to resist swelling, hardening, and cracking, providing long-term durability. With the 1000544065, you can be confident that your cooling system remains sealed, protecting your engine from thermal stress and ensuring optimal performance.
Zero Leaks
Coolant Security
Heat Resistant
Up to 150°C
OEM Fit
Exact Match
Durable
Compression Set
The 1000544065 water-outlet pipe gasket is manufactured to the highest OEM standards, incorporating advanced material science and precision engineering. Below are the complete technical specifications for this essential cooling system component.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 1000544065 | Exact Match |
| Part Name | Water-outlet pipe gasket | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / MC11/MC13 | Coolant outlet flange |
| Material | Fiber-reinforced rubber (NBR/EPDM) | With steel carrier |
| Thickness | 2.0 mm (compressed) | 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 1000544065 water-outlet pipe 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 outlet pipe and engine block. The gasket is also designed to accommodate the thermal expansion differences between the aluminium pipe and the cast iron engine, maintaining a reliable seal throughout the engine’s operating temperature range. This meticulous engineering ensures that the 1000544065 provides a durable, leak‑free seal that helps protect your engine and the environment.
The 1000544065 water-outlet pipe 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 outlet pipes 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 1000544065. If they match, this component will integrate seamlessly. Keeping this gasket in your spare parts inventory enables rapid cooling system repairs, 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-outlet pipe gasket with the 1000544065 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 outlet pipe also contributes to a cleaner engine compartment, reducing the risk of coolant‑related corrosion and environmental contamination. For fleet operators, a reliable water‑outlet gasket reduces maintenance costs, minimises coolant loss, and helps maintain the engine’s performance and efficiency. By investing in the 1000544065, you ensure that your HOWO engine’s cooling system remains sealed and reliable, mile after mile.
Installing the 1000544065 water-outlet pipe gasket is a straightforward procedure. Begin by safely draining the coolant to a level below the outlet pipe. Remove the bolts securing the water outlet pipe and carefully separate the pipe from the engine block or cylinder head. 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 outlet pipe or the engine flange, aligning the bolt holes. Some gaskets feature locating tabs to hold them in place during installation. Reinstall the outlet pipe 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 1000544065 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 1000544065 is designed to achieve an optimal seal with the correct clamping force.
Genuine HOWO components are engineered to the highest standards, and the 1000544065 water-outlet pipe 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 1000544065, 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 1000544065 water-outlet pipe gasket?
A: The 1000544065 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-outlet pipe gasket?
A: Visible coolant leaks around the outlet pipe, low coolant level warnings, engine overheating, and the smell of coolant are common indicators.
Q: Can I reuse the old gasket?
A: No, the 1000544065 is a single‑use gasket. Once compressed, it may not provide a reliable seal if reused. Always install a new gasket when servicing the outlet pipe.
Q: How do I verify the correct part?
A: Check the OEM number on your existing gasket. If it matches 1000544065, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 1000544065 Water-Outlet Pipe Gasket today! Explore our complete selection of genuine HOWO and Sinotruk cooling system components at Howo/Sitrak truck parts and keep your engine cooling system sealed and reliable.
The 1000544065 Water-Outlet Pipe 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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