Product Introduction

This precision-machined tone ring is a critical component of the vehicle’s speed sensing system, designed to generate accurate speed signals for the ECU.

• Structure & Material: Constructed from high-strength alloy steel, it features an outer ring with evenly spaced teeth that interact with a magnetic speed sensor. The surface is treated for corrosion resistance and durability.

• Performance: The precisely machined teeth create a consistent magnetic field fluctuation as the ring rotates, allowing the sensor to generate an accurate, high-resolution speed signal.

• Durability: The hardened steel construction and corrosion-resistant coating ensure long service life even under high vibration and temperature fluctuations.

• Compatibility: Direct OE replacement, fully matching the tooth count and dimensional specifications of Sinotruk heavy-duty vehicle speed sensing systems.

Core Function

1. Speed Signal Generation: The teeth on the ring create a changing magnetic field that is detected by the speed sensor, converting rotational motion into an electrical signal.

2. ECU Data Input: Provides real-time rotational speed data to the vehicle’s ECU, which is used for functions like gear shift control, ABS operation, and speedometer display.

3. Precision & Reliability: The uniform tooth spacing ensures consistent signal accuracy, preventing errors in vehicle systems that rely on speed data.

Sensor Ring Gear AZ2210100020 – SINOTRUK HW Series Gearbox Parts

When your SINOTRUK HW series gearbox needs a reliable speed signal, everything depends on one critical component: the Sensor Ring Gear AZ2210100020. This precision-machined ring gear works hand-in-hand with the transmission speed sensor to deliver accurate rotational data, ensuring smooth gear shifts and optimal drivetrain performance. Sourced directly from our factory in China, Mettlead offers wholesale distributors and aftermarket agents a genuine-quality replacement at a competitive factory-direct price — so you can protect your margins while keeping your customers’ heavy trucks on the road.

Whether you are stocking parts for fleet maintenance operations across Africa, the Middle East, or Southeast Asia, this SINOTRUK HW gearbox sensor ring gear is one of the most frequently requested transmission components in the HOWO heavy-duty truck lineup. As a result, having it readily available in your inventory means faster turnaround and happier end-users.

Key Features and Benefits of the Sensor Ring Gear AZ2210100020

So, what makes this particular ring gear a smart addition to your parts catalog? Let us walk you through the highlights:

• Precision Tooth Profile – Each tooth is machined to exacting tolerances, which guarantees a clean, consistent signal to the speed sensor. In other words, no misfires, no erratic shift behavior.
• High-Grade Alloy Steel Construction – Built to withstand continuous high-speed rotation, thermal cycling, and the heavy vibration loads common in SINOTRUK heavy-duty applications.
• Direct OEM Replacement – Part number AZ2210100020 ensures a perfect fit for SINOTRUK HW 9-speed and HW 10-speed manual transmissions without any modification.
• Corrosion-Resistant Surface Treatment – A protective finish prevents premature rust and extends service life, even in humid or coastal operating environments.
• Strict Quality Control – Every batch undergoes dimensional inspection, hardness testing, and surface finish verification before shipment. Consequently, you receive parts that meet or exceed OE specifications.
• Competitive Wholesale Pricing – Factory-direct sourcing eliminates middlemen, giving distributors and agents a healthier profit margin on every unit sold.
• White-Label and Custom Packaging Available – Want to build your own brand? We can supply neutral or custom-branded packaging tailored to your market.

Technical Specifications – Sensor Ring Gear AZ2210100020

Below you will find the detailed product parameters for this SINOTRUK HW gearbox sensor ring gear. These specifications help you verify fitment and communicate accurate product data to your customers:

Application Scenarios – Where Does This Ring Gear Fit?

The Sensor Ring Gear AZ2210100020 is specifically designed for the SINOTRUK HW series manual transmission, which is widely used across the following vehicle platforms:

• SINOTRUK HOWO 6×4 and 8×4 dump trucks – Heavy-haul mining and construction applications
• SINOTRUK HOWO A7 tractor units – Long-distance freight and logistics
• SINOTRUK HOWO T7H heavy-duty trucks – Premium-segment highway transportation
• SITRAK C7H series – High-performance long-haul tractors equipped with HW gearbox variants

In all of these cases, the ring gear sits on the gearbox output shaft and works alongside the magnetic speed sensor to produce the pulse signal that the ECU uses for shift timing, speedometer display, and ABS data. Therefore, when this component wears out or becomes damaged, drivers experience erratic speed readings, hard shifts, or dashboard warning lights — making it an urgent replacement part.

Looking for more SINOTRUK transmission components? Browse our full selection of gearbox parts and SINOTRUK HOWO gearbox parts to complete your order.

OEM/ODM Capabilities

At Mettlead, we understand that wholesale distributors often need more than just a product — they need a supply partner who can adapt. Here is what we bring to the table:

• White-Label Supply – We ship the Sensor Ring Gear AZ2210100020 in neutral packaging, ready for you to apply your own branding and resell under your company name.
• Custom Packaging Design – Need branded boxes, holographic stickers, or bilingual labels for your target market? Our team handles that for you.
• Flexible MOQ – Whether you are testing a new market with a trial order or replenishing high-volume stock, we offer flexible minimum order quantities to match your business stage.
• Cross-Reference Support – Our engineering team can help you cross-reference alternative part numbers or identify compatible gearbox models, saving you research time.
• Factory Visits Welcome – We encourage serious partners to visit our facility in China for quality audits, production line inspections, and face-to-face discussions.

Explore the full range of SINOTRUK HOWO truck parts available through Mettlead.

Customer Case Study – Sensor Ring Gear AZ2210100020 Bulk Order for East African Distributor

Earlier this year, a mid-sized truck parts distributor based in Nairobi reached out to us with a recurring challenge. Their fleet-maintenance clients were frequently reporting gearbox speed sensor faults on SINOTRUK HOWO dump trucks. After some investigation, the root cause was always the same: a worn or cracked Sensor Ring Gear AZ2210100020 on the HW series gearbox.

Previously, this distributor was sourcing ring gears from a third-party trader, which meant unpredictable lead times and inconsistent quality. After switching to Mettlead as their direct factory supplier, they placed an initial order of 200 pieces of the AZ2210100020 sensor ring gear with custom neutral packaging.

The results spoke for themselves: delivery arrived within 18 days via sea freight, quality matched OEM specifications across the entire batch, and — most importantly — their per-unit cost dropped by over 30%. Within three months, they doubled their reorder quantity and expanded into stocking additional SINOTRUK HW gearbox parts from our catalog. Today, they consider the Sensor Ring Gear AZ2210100020 one of their top-selling SKUs for the HOWO aftermarket segment.

Frequently Asked Questions – Sensor Ring Gear AZ2210100020

What is the function of the Sensor Ring Gear AZ2210100020 in the SINOTRUK HW gearbox?

The Sensor Ring Gear AZ2210100020 acts as a reluctor wheel for the transmission speed sensor. As the ring gear rotates with the output shaft, its precisely spaced teeth pass by the magnetic sensor, generating an electrical pulse signal. The ECU then uses this signal to calculate vehicle speed, manage shift timing, and provide data to the ABS system. Without a properly functioning ring gear, the transmission loses accurate speed feedback.

How do I know if the Sensor Ring Gear AZ2210100020 needs replacement?

Common symptoms of a worn or damaged sensor ring gear include erratic speedometer readings, unexpected dashboard warning lights (ABS or transmission fault codes), harsh or delayed gear shifts, and difficulty engaging cruise control. If you notice any of these issues on a SINOTRUK HOWO equipped with an HW series gearbox, inspecting the ring gear for chipped teeth, cracks, or excessive wear is a smart first step.

Is this ring gear compatible with all HW gearbox variants?

Yes, the AZ2210100020 sensor ring gear is designed to fit the full range of SINOTRUK HW series manual transmissions, including the HW19710, HW19712, HW15710, and their sub-variants. However, if you are working with a non-standard or heavily modified gearbox, we recommend confirming the part number against the original assembly drawing. Our technical team is happy to assist with cross-referencing.

What material is the Sensor Ring Gear AZ2210100020 made from?

This ring gear is manufactured from high-grade alloy steel with a hardened tooth surface (HRC 58–62). Additionally, it receives an anti-corrosion surface treatment to protect against oxidation, particularly in tropical or coastal operating environments where humidity accelerates rust.

Can I order a sample before placing a bulk order?

Absolutely. We encourage new distributors and agents to start with a sample order of the Sensor Ring Gear AZ2210100020 so you can inspect the quality, verify fitment, and test market demand before committing to larger volumes. Simply reach out to our sales team, and we will arrange a sample shipment promptly.

Does Mettlead offer custom branding on this part?

Yes. We offer white-label packaging as well as fully customized packaging with your brand logo, part number labels, and QR codes if needed. This is especially popular among distributors who want to build brand recognition in their local market while sourcing factory-direct from China.

Ready to Stock the Sensor Ring Gear AZ2210100020? Let’s Talk.

If you are a wholesale distributor, fleet parts agent, or aftermarket reseller looking for a dependable supply of SINOTRUK HW gearbox sensor ring gears, Mettlead is your factory-direct partner. We offer competitive pricing, strict quality control, flexible packaging, and fast shipping to markets worldwide.

Take the next step — contact us today to request a quote, ask about MOQ options, or arrange a factory visit. Our team typically responds within 12 hours, and we are ready to support your growth in the SINOTRUK aftermarket parts business.