In any heavy‑duty vehicle, the integrity of every fluid connection is paramount to reliable operation and safety. The 1001063409 Assembled Sealing Washer from HOWO is engineered to provide an uncompromising, leak‑proof seal for critical fluid joints, ensuring that your engine, transmission, and hydraulic systems remain secure and contamination‑free. As a vital Howo/Sitrak truck parts component, this assembled sealing washer combines a precision‑formed metal carrier with a high‑performance rubber sealing element, delivering exceptional resistance to pressure, temperature, and chemical attack. Whether you are performing routine maintenance or rebuilding a complex system, the 1001063409 guarantees a perfect factory fit, reliable sealing, and extended service life – making it the trusted choice for professional workshops and fleet operators worldwide.
The assembled sealing washer plays a fundamental role in maintaining the integrity of fluid connections across your vehicle. The 1001063409 is specifically designed to seal the interface between threaded fittings and their mating surfaces, preventing the escape of oil, coolant, fuel, or hydraulic fluid. A compromised seal can lead to fluid loss, pressure drops, contamination, and even catastrophic system failure. HOWO has engineered this washer with a precision‑stamped steel carrier that provides structural support and a controlled compression limit, while the bonded rubber sealing element – typically made from high‑grade NBR or FKM – ensures a positive seal against both the fitting and the housing. The combination of metal and elastomer offers superior resistance to extrusion, creep, and thermal cycling, ensuring that the seal remains effective over thousands of operating hours. With the 1001063409, you eliminate the risk of leaks and protect your vehicle’s vital systems from damage and downtime.
Zero Leaks
Total Sealing
Heat Resistant
Up to 150°C
OEM Fit
Exact Match
Chemical Resistant
NBR/FKM Compound
The 1001063409 assembled sealing washer is manufactured to the highest OEM standards, incorporating advanced materials and precision engineering. Below are the complete technical specifications for this essential sealing component.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 1001063409 | Exact Match |
| Part Name | Assembled Sealing Washer | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / MC11/MC13 | Fluid connections |
| Material (Carrier) | Stainless steel / zinc‑plated steel | Corrosion‑resistant |
| Material (Seal) | Nitrile (NBR) / Fluorocarbon (FKM) | Oil & heat resistant |
| Inner Diameter | 14.2 mm | Precision‑sized |
| Outer Diameter | 22.0 mm | Standard fitting |
| Thickness (Compressed) | 1.5 mm | Controlled crush |
| Max Operating Pressure | 100 bar (1450 psi) | Hydraulic systems |
| Temperature Range | -40°C to +150°C | Extreme duty |
| Weight | 0.01 kg | Lightweight |
| Warranty | 12 Months | Manufacturer Guarantee |
The 1001063409 assembled sealing washer is produced using advanced manufacturing techniques, including precision stamping, injection moulding, and automated assembly. The metal carrier is manufactured from high‑quality steel with a protective zinc or stainless coating, ensuring excellent corrosion resistance and dimensional stability. The elastomeric sealing element is injection‑moulded directly onto the carrier, creating a permanent bond that prevents separation or leakage pathways. The rubber compound is specifically formulated to resist the aggressive additives in modern engine oils, coolants, and hydraulic fluids, maintaining its elasticity and sealing force over a wide temperature range. The washer’s controlled compression design ensures that, when torqued to specification, it deforms elastically to fill any microscopic surface irregularities, creating a leak‑proof barrier. Each washer is inspected for dimensional accuracy, bond integrity, and hardness, guaranteeing that the 1001063409 meets HOWO’s stringent quality standards. This meticulous engineering ensures that every connection sealed with this washer remains secure, reliable, and free from leaks, protecting your vehicle’s systems and the environment.
The 1001063409 assembled sealing washer is specifically designed for HOWO heavy‑duty trucks equipped with MC11 or MC13 engines, including T7H, A7, and derivative models. It is used in a wide variety of fluid connections, including oil cooler lines, fuel injector return lines, turbocharger oil feeds, and hydraulic system ports. Its precise inner and outer diameters match the original specifications, ensuring a perfect fit with the corresponding bolts, banjo fittings, or threaded unions. This washer is also compatible with many Sinotruk and other commercial vehicles that share the same sealing washer dimensions. To confirm fitment, always cross‑reference the OEM number on your existing sealing washer with 1001063409. If they match, this component will integrate seamlessly. Keeping these washers in your spare parts inventory ensures that you are always prepared for maintenance or repair work, minimising downtime and ensuring reliable sealing every time.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
MC11/MC13
Engine Series
Direct Replacement
No Modifications
Replacing a worn or damaged sealing washer with the 1001063409 immediately restores the integrity of your fluid connections. The new washer provides a positive, leak‑free seal that prevents fluid loss, maintains system pressure, and eliminates the risk of cross‑contamination. The superior chemical resistance of the rubber compound ensures that the washer remains effective even when exposed to aggressive fluids, while the metal carrier prevents extrusion and maintains sealing force over time. The result is a more reliable vehicle with fewer fluid‑related issues and lower maintenance costs. For fleet operators, using genuine sealing washers reduces the risk of unexpected breakdowns, improves safety, and helps maintain the performance and efficiency of your fleet. By investing in the 1001063409, you ensure that every connection in your HOWO truck is sealed with the best possible component, protecting your investment and keeping your vehicle on the road.
Installing the 1001063409 assembled sealing washer is a simple yet critical procedure. Begin by thoroughly cleaning the mating surfaces of any dirt, old sealant, or corrosion. Place the washer onto the bolt or fitting, ensuring that it is correctly oriented – the metal carrier should face the tightening surface, while the rubber element faces the component to be sealed. Tighten the fastener to the manufacturer’s specified torque using a calibrated torque wrench. Do not overtighten, as this can deform the washer and compromise the seal. During maintenance, always replace the sealing washer whenever a connection is disturbed, as the washer undergoes compression and may not seal effectively if reused. Stock a sufficient quantity of 1001063409 washers to ensure you always have a fresh seal for every service. With proper installation, the 1001063409 will provide a reliable seal for the life of the connection.
Pro Tip: When replacing sealing washers, always use new ones – never reuse old washers, as the rubber element will have taken a permanent set and may not seal properly. The 1001063409 is designed for single‑use only; always keep a fresh supply on hand for your maintenance needs.
Genuine HOWO components are engineered to the highest standards, and the 1001063409 assembled sealing washer is no exception. Aftermarket sealing washers often use inferior rubber compounds, thinner metal carriers, or imprecise dimensions, leading to leaks, extrusion, and premature failure. HOWO’s washer is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 1001063409, you benefit from HOWO’s rigorous testing, including pressure, temperature, and chemical resistance tests. This ensures that the washer 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 1001063409 assembled sealing washer?
A: The 1001063409 is designed for HOWO T7H, A7, and other models with MC11/MC13 engines, as well as many Sinotruk trucks with the same sealing washer specifications.
Q: What are the symptoms of a failing sealing washer?
A: Visible fluid leaks around the connection, dampness or drips, low fluid levels, and pressure drops in the system are common indicators.
Q: Can I reuse the sealing washer?
A: No, the 1001063409 is designed for single‑use only. Once compressed, the rubber element takes a set and may not seal effectively if reused. Always replace it with a new one during any service.
Q: How do I verify the correct part?
A: Check the OEM number on your existing washer. If it matches 1001063409, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 1001063409 Assembled Sealing Washer today! Explore our complete selection of genuine HOWO and Sinotruk sealing components at Howo/Sitrak truck parts and keep your fluid systems secure and leak‑free.
The 1001063409 Assembled Sealing Washer from HOWO is a testament to precision engineering and uncompromising quality. By choosing this genuine component, you ensure that every fluid connection in your truck is sealed with the highest level of reliability, protecting your engine, transmission, and hydraulic systems from leaks and contamination. Whether you are a professional mechanic or a fleet manager, this sealing washer offers the performance, durability, and exact fit that you can count on. Trust HOWO – the benchmark for excellence in heavy‑duty truck components – and experience the difference that genuine quality makes.
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