The integrity of your truck’s drivetrain depends on every component performing flawlessly, and the oil seal seat is a critical element in maintaining a leak‑free, contamination‑proof environment for rotating shafts. The 99014320175 OIL SEAL SEAT from HOWO is engineered to provide a precise, durable mounting surface for oil seals, ensuring that lubricants stay where they belong and contaminants are kept out. As a vital Howo/Sitrak truck parts component, this oil seal seat is manufactured from high‑strength cast iron with precision‑machined surfaces, offering outstanding dimensional stability, corrosion resistance, and long‑lasting performance. Whether you are rebuilding a differential, overhauling a gearbox, or replacing a worn seal carrier, the 99014320175 guarantees a perfect factory fit, consistent sealing pressure, and extended drivetrain life – making it the trusted choice for professional workshops and fleet operators worldwide.
The oil seal seat serves as the foundation for the oil seal, providing a rigid, accurately machined bore that ensures the seal maintains the correct alignment and contact pressure against the rotating shaft[reference:0]. The 99014320175 is specifically designed for HOWO heavy‑duty trucks, commonly used in the middle axle front oil seal seat application, as well as in gearbox and differential assemblies[reference:1][reference:2]. A worn, corroded, or damaged seal seat can lead to misalignment, premature seal wear, fluid leaks, and contamination of critical components[reference:3]. HOWO has engineered this oil seal seat with a precision‑ground inner bore and a perfectly flat mounting face, ensuring that the oil seal is held securely and concentrically. Its robust cast iron construction resists distortion under thermal and mechanical stress, maintaining the seal’s effectiveness over thousands of operating hours. With the 99014320175, you restore the original sealing integrity, protect your bearings and gears from contamination, and avoid costly fluid loss.
Leak‑Proof
Precision Fit
Corrosion Proof
Cast Iron
OEM Grade
Genuine HOWO
Heat Resistant
Thermally Stable
Accurate technical data is essential for correct selection and installation. The 99014320175 is manufactured to the highest OEM standards, guaranteeing seamless integration with your HOWO drivetrain.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 99014320175 | Exact Match |
| Part Name | OIL SEAL SEAT | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / Middle Axle / Gearbox / Differential | Oil seal housing |
| Material | High‑strength cast iron | Corrosion‑resistant |
| Inner Bore | Precision‑machined | Ensures seal alignment |
| Mounting Type | Bolt‑on (flange) | Secure fitment |
| Weight | 2.5 kg | Substantial |
| Warranty | 12 Months | Manufacturer Guarantee |
The 99014320175 oil seal seat is produced using advanced casting and precision machining processes to ensure consistent quality and structural integrity. The high‑strength cast iron construction provides exceptional rigidity and resistance to deformation, even under the high temperatures and mechanical loads encountered in heavy‑duty drivetrain applications[reference:4]. The inner bore is precision‑ground to achieve the exact surface finish and dimensional accuracy required for a perfect seal fit, preventing oil leakage and ensuring reliable sealing performance[reference:5]. The mounting flange is machined flat and parallel, guaranteeing a secure, vibration‑free attachment to the axle housing or gearbox casing. Each seat is inspected for dimensional accuracy, bore concentricity, and surface finish, guaranteeing that the 99014320175 meets HOWO’s stringent quality standards. This meticulous engineering ensures that your oil seal remains correctly positioned and fully effective, protecting your drivetrain from fluid loss and contamination.
The 99014320175 oil seal seat is specifically designed for HOWO heavy‑duty trucks, including T7H, A7, and derivative models, as well as many Sinotruk and STR/STRW vehicles[reference:6][reference:7]. It is commonly used in the middle axle front oil seal seat application, as well as in gearbox and differential assemblies where a reliable seal carrier is required[reference:8][reference:9]. It directly replaces the original seal seat with identical mounting dimensions, bolt patterns, and bore specifications, ensuring a straightforward installation without modifications. This oil seal seat is also compatible with many other commercial vehicles that share the same drivetrain architecture. To confirm fitment, always cross‑reference the OEM number on your existing seat with 99014320175. If they match, this component will integrate seamlessly. Keeping this seal seat in your spare parts inventory enables rapid drivetrain repairs, minimising downtime and preserving the reliability of your vehicle’s rotating assemblies.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
Middle Axle
Gearbox / Diff
Direct Replacement
No Modifications
Replacing a worn, corroded, or damaged oil seal seat with the 99014320175 immediately restores the sealing integrity of your drivetrain. The new seat provides a rigid, accurately machined housing that ensures the oil seal maintains consistent contact with the rotating shaft, preventing fluid leaks and contamination[reference:10]. The precision‑ground bore eliminates play and misalignment, reducing wear on the seal lip and extending its service life. The robust cast iron construction resists distortion under thermal and mechanical stress, maintaining the seal’s effectiveness over thousands of operating hours. For fleet operators, a reliable oil seal seat reduces the risk of fluid loss, contamination, and drivetrain failures, lowering maintenance costs and improving vehicle uptime. By investing in the 99014320175, you ensure that your HOWO truck’s rotating assemblies remain properly sealed, lubricated, and protected, mile after mile.
Installing the 99014320175 oil seal seat is a straightforward procedure. Begin by safely raising the vehicle and draining the lubricant from the axle, gearbox, or differential as required. Remove the old seal seat by unbolting it from the housing, taking care not to damage the mating surfaces. Thoroughly clean the housing mounting face and the bore, removing all old sealant, debris, and corrosion. Inspect the shaft for grooves or scoring; if damaged, the shaft may need to be repaired or replaced. Install the new seal seat, ensuring it is correctly orientated and fully seated against the locating shoulder. Apply a thin layer of sealant to the mating face if specified, and torque the mounting bolts to the manufacturer’s specification. Install a new oil seal into the seat, lubricate the seal lip with clean oil, and reassemble the remaining components. Refill with the correct grade of lubricant, start the engine, and check for any leaks. Periodically inspect the seal seat for signs of corrosion or damage during routine maintenance. With proper installation, the 99014320175 will provide years of reliable sealing performance.
Pro Tip: When replacing the oil seal seat, always install a new oil seal to ensure a perfect, leak‑free seal. The 99014320175 is designed to work with OEM‑spec seals; using a genuine seal guarantees optimal performance and longevity.
Genuine HOWO components are engineered to the highest standards, and the 99014320175 oil seal seat is no exception. Aftermarket seal seats often use inferior materials, imprecise machining, or poor corrosion protection, leading to leaks, premature seal wear, and potential drivetrain damage. HOWO’s seal seat is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 99014320175, you benefit from HOWO’s rigorous testing, including dimensional accuracy, material strength, and corrosion resistance tests. This ensures that the seal seat 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 99014320175 oil seal seat?
A: The 99014320175 is designed for HOWO T7H, A7, and other heavy‑duty trucks, as well as many Sinotruk and STR/STRW models[reference:11][reference:12].
Q: What are the symptoms of a failing oil seal seat?
A: Fluid leaks from the axle or gearbox, premature seal wear, contamination of lubricant, and visible corrosion or damage to the seal housing are common indicators.
Q: Does the oil seal seat come with the oil seal?
A: The 99014320175 includes the seal seat only. The oil seal is typically purchased separately. We recommend using a genuine HOWO seal for optimal performance.
Q: How do I verify the correct part?
A: Check the OEM number on your existing seal seat. If it matches 99014320175, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 99014320175 Oil Seal Seat today! Explore our complete selection of genuine HOWO and Sinotruk drivetrain components at Howo/Sitrak truck parts and keep your seals perfectly seated and reliable.
The 99014320175 Oil Seal Seat from HOWO is a testament to robust engineering and uncompromising quality. By choosing this genuine component, you ensure that your truck’s rotating assemblies remain properly sealed, lubricated, and protected, preventing costly fluid leaks and contamination. Whether you are a professional mechanic or a fleet manager, this oil seal seat 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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