The input shaft is the very first link in your transmission’s power flow, transferring engine torque to the gear train with absolute precision. The WG2210020105 INPUT SHAFT from HOWO is engineered to deliver uncompromising strength, fatigue resistance, and a perfect factory fit, ensuring seamless power delivery and extended transmission life. As a critical Howo/Sitrak truck parts component, this input shaft is forged from high-grade alloy steel, precision-machined and heat-treated to achieve optimal hardness and toughness, with precisely ground splines and bearing journals that guarantee smooth operation and minimal backlash. Whether you are rebuilding a worn gearbox or replacing a damaged shaft, the WG2210020105 delivers factory-original dimensions, superior metallurgy, and lasting durability – making it the definitive choice for professional transmission workshops and fleet maintenance teams worldwide.
The WG2210020105 Input Shaft is the primary load‑bearing component that receives engine power via the clutch and transmits it to the countershaft and mainshaft gears. It must withstand constant torsional stress, bending loads, and fatigue cycles over millions of revolutions. A worn or cracked input shaft can cause gear misalignment, excessive noise, vibration, and ultimately catastrophic transmission failure. HOWO has designed this shaft with a stepped diameter that optimally distributes stress, and the splines are precision‑rolled, not cut, to preserve grain flow and increase fatigue strength. The shaft also features optimized lubrication channels that ensure a continuous oil film on bearing surfaces, reducing friction and heat. With the WG2210020105, you restore the original power transmission efficiency, smooth shifting, and reliable operation that your HOWO truck was built for.
High Torque
Load Capacity
Precision Splines
Zero Backlash
OEM Grade
Genuine HOWO
Heat-Treated
Wear-Resistant
Comprehensive engineering data ensures correct application and installation. The WG2210020105 is manufactured to the most stringent OEM tolerances, guaranteeing a seamless replacement for your HOWO transmission.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | WG2210020105 | Exact Match |
| Part Name | INPUT SHAFT | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / HW19710 gearbox | 12‑speed AMT/manual |
| Material | Alloy steel (20CrMnTi) | Forged & heat‑treated |
| Spline Type | Involute, 10 teeth | Precision ground |
| Overall Length | 560 mm | End‑to‑end |
| Journal Diameter | 55 mm (bearing seat) | Ground finish |
| Hardness (core) | 30‑35 HRC | Toughness |
| Surface Hardness | 58‑62 HRC (case) | Wear resistant |
| Max Torque Capacity | 2000 N·m | Heavy‑duty |
| Weight | 4.8 kg | Substantial |
| Warranty | 12 Months | Manufacturer Guarantee |
The WG2210020105 is produced through a multi‑stage manufacturing process that begins with vacuum‑degassed alloy steel forging to eliminate inclusions and ensure a dense, uniform grain structure. The blank is then annealed to relieve internal stresses, followed by rough CNC turning to establish the basic geometry. The critical areas – splines, bearing journals, and sealing surfaces – are then precision‑ground to achieve tolerances of ±0.01 mm and a surface finish of Ra 0.4.
The shaft undergoes a carburizing heat treatment that enriches the surface layer with carbon, followed by quenching and tempering to achieve the ideal balance of core toughness and surface hardness. The splines are rolled after heat treatment to further increase surface compressive stress, significantly improving fatigue life. The oil holes are deburred and chamfered to ensure smooth oil flow without obstructing the passages. Each shaft is inspected for straightness, concentricity, and spline dimensions using CNC gauging, and a magnetic particle inspection detects any microscopic surface cracks. This meticulous engineering guarantees that the WG2210020105 delivers flawless power transmission and long‑term reliability.
The WG2210020105 is specifically designed for HOWO heavy‑duty trucks equipped with HW19710 series manual and automated manual transmissions, commonly installed in T7H, A7, and derivative models. It directly replaces the original input shaft, with identical spline profile, bearing journal dimensions, and pilot bearing fitment. The shaft is compatible with both single‑plate and dual‑plate clutch configurations.
This input shaft is also compatible with many Sinotruk and other commercial vehicles that employ the same transmission architecture. To confirm fitment, always verify the OEM number on your existing shaft. If it matches WG2210020105, this component will integrate seamlessly. Keeping this shaft in your spare parts inventory enables rapid transmission rebuilds, minimizing downtime and ensuring your fleet remains operational.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
HW19710 Gearbox
Direct Mount
Direct Replacement
No Mods
Replacing a worn or damaged input shaft with the WG2210020105 restores the original power transmission efficiency and shift quality. The precisely ground bearing journals ensure minimal radial play, reducing vibration and noise at all operating speeds. The hardened splines maintain tight engagement with the clutch disc, eliminating transmission rattle and improving drivability.
The improved metallurgy and heat treatment provide enhanced torsional strength, allowing the shaft to handle high‑torque outputs without twisting or fatigue failure. This translates to more reliable operation under heavy loads and less frequent transmission overhauls. For fleet operators, a durable input shaft reduces catastrophic failures, lowers maintenance costs, and improves vehicle uptime. By investing in the WG2210020105, you ensure that your HOWO transmission remains responsive, quiet, and dependable for millions of kilometers.
Installing the WG2210020105 Input Shaft is a complex procedure that should be performed by an experienced transmission technician. Begin by removing the transmission from the vehicle and dismantling the gearbox according to the manufacturer’s service manual. Carefully extract the old input shaft, noting the position of shims, bearings, and circlips.
Thoroughly clean the housing and inspect all bearings, synchronizers, and gears for wear. Replace any worn components as needed. Before installing the new shaft, lubricate all bearing surfaces and splines with clean transmission oil. Carefully guide the shaft into the pilot bearing and gear cluster, ensuring that it seats fully without forcing. Install new circlips and shims as specified. Reassemble the transmission and torque all fasteners to the manufacturer’s specifications. Refill with the correct lubricant. With careful installation, the WG2210020105 will provide a lifetime of reliable service.
Pro Tip: When replacing the input shaft, always install a new pilot bearing and front transmission seal. Old bearings and seals are prone to failure and can compromise the new shaft. The WG2210020105 is designed to work with fresh supporting components for optimal longevity.
Genuine HOWO components are engineered to the highest standards, and the WG2210020105 Input Shaft is no exception. Aftermarket shafts often use inferior steel, inconsistent heat treatment, or imprecise spline geometry, leading to premature wear, noise, and failure. HOWO’s shaft is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance.
By choosing the WG2210020105, you benefit from HOWO’s extensive testing, including torsional fatigue, bending fatigue, and wear testing. This ensures that the shaft 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 transmissions use the WG2210020105?
A: It is used in HOWO HW19710 series manual and automated transmissions, found in T7H, A7, and similar trucks.
Q: What are the signs of a worn input shaft?
A: Excessive radial play at the input end, clutch shudder, vibration, gear whine, and difficulty engaging gears are common indicators.
Q: Can I reuse the old bearings with the new shaft?
A: It is strongly recommended to replace all bearings, seals, and circlips when installing a new input shaft. The WG2210020105 is designed to work with fresh components for maximum reliability.
Q: How do I verify the correct part?
A: Check the OEM number stamped on your existing shaft. If it matches WG2210020105, this is the exact replacement. Consult your vehicle’s service manual for additional confirmation.
Order your WG2210020105 Input Shaft today! Explore our complete selection of genuine HOWO and Sinotruk transmission components at Howo/Sitrak truck parts and keep your gearbox performing at its peak.
The WG2210020105 Input Shaft from HOWO is a testament to precision metallurgy and robust engineering. By choosing this genuine component, you ensure that your transmission receives the flawless power delivery it needs, reducing wear on other components and extending the life of your drivetrain. Whether you are a professional mechanic or a fleet manager, this shaft offers the strength, durability, and exact fit required for modern heavy‑duty trucks. Trust HOWO – the benchmark for excellence in heavy‑duty truck components – and experience the difference that genuine quality makes.
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