The gearbox is the powerhouse of your heavy-duty truck, and its internal components rely on a perfect seal to maintain optimal lubrication and prevent costly fluid loss. The 9114320902 HOWO 85x105x10 gearbox shank oil seal is engineered to deliver uncompromising sealing performance, outstanding resistance to heat and pressure, and a precise factory fit, ensuring that your transmission operates reliably under the most demanding conditions. As a critical Howo/Sitrak truck parts component, this oil seal is manufactured from high-grade nitrile rubber (NBR) with a precision‑formed double lip and an integrated garter spring, providing exceptional sealing against oil leakage and contamination ingress[reference:0][reference:1]. Whether you are rebuilding a gearbox or replacing a worn seal, the 9114320902 guarantees a perfect factory fit, consistent performance, and extended transmission life – making it the trusted choice for professional workshops and fleet operators worldwide.
The gearbox shank oil seal is a critical component that prevents transmission fluid from leaking out at the output shaft, while simultaneously blocking dirt, water, and contaminants from entering the gearbox housing[reference:2]. The 9114320902 is specifically designed for HOWO heavy‑duty transmissions, including the widely used HW19710 series, providing a reliable barrier that maintains proper oil levels and protects internal gears, bearings, and synchronizers from premature wear[reference:3]. A worn or hardened seal can lead to fluid loss, increased friction, gear whine, and eventual transmission failure. HOWO has engineered this oil seal with a precision‑ground inner lip that maintains constant contact with the rotating shaft, supported by a stainless steel garter spring that ensures consistent sealing force regardless of temperature fluctuations or shaft runout[reference:4]. Its double‑lip design provides an additional layer of protection, effectively keeping lubricants in and contaminants out[reference:5]. With the 9114320902, you restore the original sealing integrity, extend the service life of your gearbox, and avoid costly downtime.
Leak‑Proof
Zero Seepage
Heat Resistant
-40°C to +120°C
OEM Grade
Genuine HOWO
Double Lip
Superior Seal
Accurate technical data is crucial for proper selection and installation. The 9114320902 is manufactured to strict OEM tolerances, guaranteeing seamless integration with your HOWO gearbox.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 9114320902 | Exact Match |
| Part Name | HOWO 85x105x10 Gearbox Shank Oil Seal | Genuine HOWO |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / HW19710 / HW19712 series gearbox | Output shaft sealing |
| Inner Diameter | 85 mm | Precision‑sized |
| Outer Diameter | 105 mm | Standard housing fit |
| Width | 10 mm | Optimal sealing contact |
| Material | Nitrile rubber (NBR) with steel casing | Oil & heat resistant |
| Lip Type | Double lip with garter spring | Enhanced sealing |
| Temperature Range | -40°C to +120°C | Extreme duty |
| Weight | 0.07 kg | Lightweight |
| Warranty | 12 Months | Manufacturer Guarantee |
The 9114320902 oil seal is produced using advanced compression molding and precision finishing techniques to ensure exceptional dimensional accuracy and sealing performance. The nitrile rubber (NBR) compound is specifically formulated to provide outstanding resistance to high temperatures, transmission fluid additives, and the chemical attack of lubricants, maintaining its elasticity and sealing ability over extended service intervals[reference:6]. The double‑lip design creates a primary sealing barrier against oil leakage and a secondary lip that acts as a dust excluder, preventing contaminants from entering the gearbox[reference:7]. The integrated garter spring maintains constant radial pressure on the shaft, compensating for minor wear and ensuring a consistent seal throughout the life of the component[reference:8]. Each seal is inspected for dimensional accuracy, hardness, and lip integrity, guaranteeing that the 9114320902 meets HOWO’s stringent quality standards. This meticulous engineering ensures that your gearbox remains sealed, your lubricant stays clean, and your transmission operates reliably, mile after mile.
The 9114320902 oil seal is specifically designed for HOWO heavy‑duty trucks equipped with HW19710 and HW19712 series manual and automated transmissions, commonly found in T7H, A7, and derivative models[reference:9]. It directly replaces the original output shaft seal with identical dimensions (85mm ID × 105mm OD × 10mm width) and sealing characteristics, ensuring a straightforward installation without modifications[reference:10]. The seal is compatible with all factory‑specified output shafts and gearbox housings, and it works seamlessly with the original equipment lubrication system. This oil seal is also compatible with many Sinotruk and other commercial vehicles that share the same transmission architecture. To confirm fitment, always cross‑reference the OEM number on your existing seal with 9114320902. If they match, this component will integrate seamlessly. Keeping this seal in your spare parts inventory enables rapid transmission repairs, minimising downtime and preserving the performance and reliability of your drivetrain.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
HW19710/HW19712
Transmission Series
Direct Replacement
No Modifications
Replacing a worn, hardened, or leaking output shaft seal with the 9114320902 immediately restores the sealing integrity of your gearbox. The new seal prevents transmission fluid loss, maintaining proper lubrication for gears, bearings, and synchronizers, which reduces friction and wear. The double‑lip design provides superior protection against contaminants, preventing dirt and moisture from entering the gearbox and causing premature component failure[reference:11]. The consistent sealing force of the garter spring ensures that the seal maintains its performance over time, reducing the need for frequent replacements. For fleet operators, a reliable oil seal reduces the risk of transmission failures, lowers maintenance costs, and helps maintain the performance and efficiency of your vehicles. By investing in the 9114320902, you ensure that your HOWO truck’s gearbox remains sealed, lubricated, and protected, mile after mile.
Installing the 9114320902 oil seal requires careful attention to cleanliness and proper seating. Begin by safely raising the vehicle and removing the propeller shaft to access the gearbox output shaft. Thoroughly clean the seal housing bore and the shaft surface, removing all old seal material, debris, and corrosion. Inspect the shaft for grooves or scoring; if damaged, the shaft may need to be repaired or replaced. Lubricate the new seal’s lip and outer casing with a thin layer of clean transmission fluid or assembly lube. Using a suitable seal installation tool or a socket of the correct diameter, carefully press the new seal into the housing until it is fully seated and flush with the housing face. Ensure the seal is installed with the lip facing the oil (spring side inward). Reinstall the propeller shaft and refill the transmission with the correct grade of lubricant. Start the engine and check for any leaks. Periodically inspect the seal for signs of leakage during routine maintenance. With proper installation, the 9114320902 will provide years of reliable sealing performance.
Pro Tip: When installing the new oil seal, always use a seal installation tool to ensure that the seal is driven in straight and square. Installing the seal at an angle can damage the lip and cause premature failure. The 9114320902 is a precision component; proper installation is essential for optimal sealing performance.
Genuine HOWO components are engineered to the highest standards, and the 9114320902 oil seal is no exception. Aftermarket seals often use inferior rubber compounds, weaker spring tension, or imprecise dimensions, leading to leaks, premature wear, and potential gearbox damage. HOWO’s seal is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance[reference:12]. By choosing the 9114320902, you benefit from HOWO’s rigorous testing, including temperature cycling, oil resistance, and wear testing. This ensures that the seal 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 9114320902 oil seal?
A: The 9114320902 is designed for HOWO T7H, A7, and other models with HW19710/HW19712 series transmissions, as well as many Sinotruk trucks with the same gearbox architecture[reference:13].
Q: What are the symptoms of a failing output shaft oil seal?
A: Transmission fluid leaks from the rear of the gearbox, low fluid level warnings, gear whine, and visible oil spots under the vehicle are common indicators.
Q: Can I reuse the old oil seal?
A: No, the 9114320902 is a single‑use seal. Once removed, it may not provide a reliable seal if reused. Always install a new seal when servicing the gearbox output shaft.
Q: How do I verify the correct part?
A: Check the OEM number on your existing seal. If it matches 9114320902, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 9114320902 HOWO Gearbox Shank Oil Seal today! Explore our complete selection of genuine HOWO and Sinotruk transmission components at Howo/Sitrak truck parts and keep your gearbox sealed and performing at its peak.
The 9114320902 HOWO 85x105x10 gearbox shank oil seal from HOWO is a testament to precision engineering and uncompromising quality. By choosing this genuine component, you ensure that your transmission remains sealed, lubricated, and protected, preventing costly fluid leaks and maintaining optimal gearbox performance. Whether you are a professional mechanic or a fleet manager, this oil seal 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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