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Howo Truck Gearbox Synchronizer Gears
Factory direct wholesale on genuine Howo truck gearbox synchronizer gears. Premium heavy-duty replacement synchronizers for Sinotruk HW19710 and HW19712 manual transmissions.Precision-machined from high-strength alloy steel, wear-resistant and long-lasting under heavy loads.
Minimum order quantity: 1 unit
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Product Details
The Howo truck gearbox synchronizer gear stands as a precision-engineered transmission component designed to match the rotational speeds of the main shaft and counter shaft during gear engagement, ensuring seamless and clash-free shifting under the toughest operating conditions. Operating under continuous high-speed friction, repetitive shift cycling, and severe load torque characteristic of commercial haulage, this synchronizer assembly provides the exact synchronization force required to eliminate gear clash, reduce shift effort, and optimize driveline efficiency. Manufactured to strict OEM standards, each synchronizer gear utilizes high-strength carburized alloy steel (20CrMnTi) with precision-ground tooth profiles and fatigue-resistant synchronizer rings. Whether deploying under maximum payload on a Howo dump truck or navigating long-distance regional logistics on a tractor head, this premium driveline replacement part ensures smooth gear changes, extended transmission longevity, and lower total cost of ownership for the entire gearbox matrix.
Product Parameter Table
| Technical Parameter | Industrial Specification Data (OEM Driveline Components Matrix) |
| Product Name | Heavy Duty Gearbox Synchronizer Gear Assembly |
| Transmission Match | Sinotruk HW19710 / HW19712 & FAST Gearboxes |
| Chassis Brand Match | Sinotruk Howo (Howo 7, Howo TX, Howo T7H, Howo MAX, etc.) |
| Engine Configuration | Sinotruk WD615, D12 Engines, and Weichai WP10 / WP12 Series |
| Gear Material | High-Grade Carburized Alloy Steel (20CrMnTi) |
| Surface Hardness | HRC 58-62 (Case Carburizing & Quenching) |
| Synchronizer Ring | Premium Wear-Resistant Brass / Sintered Alloy |
| Shift Cycling Life | Engineered for Hundreds of Thousands of Shift Cycles |
| Quality System Compliance | ISO 9001:2015, IATF 16949 Heavy Automotive Manufacturing Standards |
Confirm part number with actual vehicle configuration before ordering.
Features of Howo truck gearbox synchronizer gear
Wear-Resistant Carburized Tooth Surfaces: The gear teeth are manufactured from premium high-grade carburized alloy steel (20CrMnTi) with deep case-hardening (HRC 58-62). This maintains precise tooth geometry and wear resistance through hundreds of thousands of shift cycles, even under heavy-load engagement and abrasive operating conditions.
Fatigue-Resistant Synchronizer Ring: Built with premium wear-resistant brass / sintered alloy, the synchronizer ring delivers uniform speed synchronization with reduced shift effort — even when cold — preventing gear clash and protecting the shift forks from impact wear.
Precision-Ground Tooth Profile: Every gear tooth profile is CNC precision-ground to match OEM specifications exactly, eliminating gear clash, noise, and mismatched-geometry failure during high-RPM engagement.
Optimized Spline Fit & Locating Surfaces: Spline fits, tooth counts, and locating surfaces align perfectly with the original Sinotruk factory components — a direct drop-in replacement that saves mechanics valuable downtime during overhauls.
Precision Dynamic Balancing & QC: Each synchronizer gear assembly undergoes automated computer-controlled dynamic balancing and inspection, eliminating high-frequency drivetrain vibrations and preventing premature wear on the main shaft and bearings.
Extended Gearbox Longevity: By protecting gears, shift forks, and the main shaft from impact wear, this premium replacement part lowers total cost of ownership for fleets, maximizing uptime and profitability.
Packaging and Shipping
Each Howo truck gearbox synchronizer gear is packaged in a box and protected with foam material to avoid damage during transportation. Small orders can be shipped via express delivery, and large orders can be shipped by sea. We provide safe and stable packaging for long-distance transportation.
About Us
Founded in 2005, Chengda Group is a professional truck parts supplier with 18 years of export experience, partnering with top brands like Sinotruk, Shacman, FAW, Dongfeng, and Foton. We own automated production lines, a professional R&D team, and strict quality control, offering one-stop solutions for all truck core components. Certified by SGS, BV, ISO, CCC, and WMI, our annual export value exceeds $5 million, providing cost-effective, durable parts with OEM service, English documents, and free after-sales support.
