A reliable, balanced braking system is essential for the safe operation of any heavy-duty truck, and the front brake camshaft is a key component in achieving that balance. The WG9100440002 FRONT BRAKE CAMSHAFT (RIGHT) from HOWO is engineered to deliver precise, consistent brake actuation, superior wear resistance, and uncompromised reliability under the most demanding conditions. As a vital Howo/Sitrak truck parts component, this right-hand brake camshaft is forged from high-grade alloy steel, precision-machined to exacting tolerances, and heat-treated for optimal hardness and toughness. Its precisely ground cam lobes ensure uniform brake shoe expansion, providing smooth, progressive braking and reduced stopping distances. Whether you are performing a brake overhaul or replacing a worn component, the WG9100440002 guarantees factory-original fit, outstanding durability, and consistent braking performance – making it the trusted choice for professional workshops and fleet operators worldwide.
The front brake camshaft is the mechanical link between the brake chamber pushrod and the S-cam that expands the brake shoes. Its precise rotation translates the linear force from the air actuator into a rotary motion, evenly pressing the brake linings against the drum. Over time, the camshaft’s bearing journals and cam lobes experience significant wear, leading to reduced braking efficiency, uneven pad wear, and increased stopping distances. HOWO has designed the WG9100440002 with induction-hardened cam lobes and bearing surfaces that resist galling and scoring, ensuring long-term dimensional stability. The shaft’s optimized geometry provides a smooth, linear brake application, reducing pedal effort and improving driver control. With the WG9100440002, you restore the original braking performance, enhance safety, and prolong the life of your brake components.
Safe Stopping
Consistent Braking
Hardened Lobes
Wear-Resistant
OEM Grade
Genuine HOWO
Precision Fit
No Play
Accurate engineering data is essential for proper selection and installation. The WG9100440002 is manufactured to the highest OEM standards, guaranteeing a seamless replacement for your HOWO truck’s right front brake camshaft.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | WG9100440002 | Exact Match |
| Part Name | FRONT BRAKE CAMSHAFT (RIGHT) | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / Front axle | Right side, S‑cam type |
| Material | Alloy steel (40Cr) | Forged & hardened |
| Cam Lift | 12.5 mm | Precision ground |
| Bearing Journal Diameter | 45 mm | Ground finish |
| Overall Length | 320 mm | End‑to‑end |
| Surface Hardness (lobe) | 58–62 HRC | Induction hardened |
| Core Hardness | 28–32 HRC | Toughness |
| Spline Type | Involute, 10 teeth | For brake chamber arm |
| Weight | 3.1 kg | Substantial |
| Warranty | 12 Months | Manufacturer Guarantee |
The WG9100440002 is produced using a multi‑stage manufacturing process that begins with hot‑forging of premium alloy steel to align the grain structure, followed by controlled annealing to relieve internal stresses. CNC turning, milling, and grinding operations bring the camshaft to its final dimensions with an accuracy of ±0.02 mm, ensuring perfect fitment in the axle housing and brake assembly.
The cam lobes are induction‑hardened to achieve a surface hardness of 58–62 HRC, providing exceptional resistance to the high‑contact stresses encountered during braking. The bearing journals are ground to a mirror finish (Ra 0.4) to minimize friction and extend the life of the bushings. The splined end is precisely broached to ensure a tight, backlash‑free connection with the brake chamber slack adjuster. Each camshaft is subjected to magnetic particle inspection to detect any surface or subsurface flaws, and a comprehensive dimensional check using CMM equipment guarantees that it meets all OEM specifications. This meticulous engineering ensures that the WG9100440002 delivers consistent, fade‑free braking performance mile after mile.
The WG9100440002 is specifically designed for HOWO heavy‑duty trucks, including T7H, A7, and derivative models equipped with front S‑cam drum brakes. It is used on the right (passenger) side of the front axle, directly replacing the original camshaft with identical dimensions, spline count, and lobe profile. It is compatible with both standard and heavy‑duty brake shoe configurations.
This camshaft is also compatible with many Sinotruk and other commercial vehicles that share the same front brake architecture. To confirm fitment, always cross‑reference the OEM number on your existing camshaft with WG9100440002. If they match, this component will integrate seamlessly. Keeping this camshaft in your spare parts inventory enables rapid brake system repairs, minimising downtime and ensuring that your truck stops safely and predictably.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
Front Axle
Right Side
Direct Replacement
No Mods
Replacing a worn or scored brake camshaft with the WG9100440002 immediately restores the braking efficiency of your front axle. The precisely ground cam lobes ensure that the brake shoes expand evenly, providing maximum contact with the drum and reducing the risk of brake fade. The reduced friction in the bearing journals translates to lower operating temperatures, extending the life of the lubricant and the bushings.
The consistent brake application also minimizes the chance of brake pull or uneven stopping, improving driver control and confidence during emergency stops. The hardened splines eliminate play between the camshaft and the slack adjuster, ensuring that brake adjustments remain stable over time. For fleet operators, a reliable front brake camshaft reduces brake-related maintenance, lowers total cost of ownership, and enhances overall vehicle safety. By investing in the WG9100440002, you ensure that your HOWO truck stops as safely and predictably as the day it left the factory.
Installing the WG9100440002 Front Brake Camshaft requires proper tools and safety precautions. Begin by safely supporting the vehicle and removing the front wheel and brake drum. Disconnect the brake chamber pushrod and remove the slack adjuster. Unbolt the camshaft retaining brackets and carefully withdraw the old camshaft.
Thoroughly clean the axle housing and inspect the bearing bores for wear or damage. Apply a high‑temperature brake grease to the new camshaft’s bearing journals and lobes. Install the new camshaft, ensuring it is properly oriented (the cam lobe profile must match the original). Reinstall the retaining brackets and torque the bolts to specification. Attach the slack adjuster, ensuring the splines are fully engaged, and adjust the brake shoes to the correct clearance. Reconnect the pushrod and test the brake operation by applying air pressure. After a short road test, re‑check the adjustment and re‑torque the retaining bolts. With proper installation, the WG9100440002 will provide years of dependable braking.
Pro Tip: When replacing the camshaft, always install new oil seals and check the condition of the bushings. Worn bushings can cause premature camshaft wear. The WG9100440002 is designed to work with fresh seals and bushings for optimal performance.
Genuine HOWO components are engineered to the highest standards, and the WG9100440002 Front Brake Camshaft is no exception. Aftermarket camshafts often use lower‑grade steel, inconsistent hardening, or imprecise lobe geometry, leading to rapid wear, brake imbalance, and potential failure. HOWO’s camshaft is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance.
By choosing the WG9100440002, you benefit from HOWO’s rigorous testing, including fatigue, wear, and corrosion testing. This ensures that the camshaft meets the demanding requirements of heavy‑duty braking systems. Moreover, genuine parts are backed by a comprehensive warranty and supported by HOWO’s global network, giving you confidence in your purchase and long‑term peace of mind.
OEM Authentic
Factory Quality
Long Service
Extended Life
Global Standard
Trusted Worldwide
Q: Which vehicles use the WG9100440002?
A: It is designed for HOWO T7H, A7, and other models with front S‑cam brakes, as well as many Sinotruk trucks with the same axle design.
Q: What are the signs of a worn front brake camshaft?
A: Uneven brake shoe wear, a pulling sensation during braking, reduced braking effectiveness, and audible knocking or squeaking from the front brakes are common indicators.
Q: Is this camshaft side‑specific?
A: Yes, the WG9100440002 is specifically for the right (passenger) side. The left side uses a mirror‑image camshaft with a different OEM number (WG9100440001).
Q: How do I verify the correct part?
A: Check the OEM number stamped on your existing camshaft. If it matches WG9100440002, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your WG9100440002 Front Brake Camshaft today! Explore our complete selection of genuine HOWO and Sinotruk brake components at Howo/Sitrak truck parts and ensure your truck stops with confidence.
The WG9100440002 Front Brake Camshaft from HOWO is a testament to precision engineering and unyielding quality. By choosing this genuine component, you ensure that your truck’s front brakes deliver consistent, powerful stopping performance, protecting your cargo, your drivers, and everyone on the road. Whether you are a professional mechanic or a fleet manager, this camshaft 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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