- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com


The Sinotruk Howo A7 Gears Composite Member represents a comprehensive transmission gear system specifically engineered for the Sinotruk Howo A7 heavy-duty truck series. This sophisticated assembly integrates multiple gear components, synchronizers, bearings, and supporting elements that work in perfect harmony to facilitate smooth power transmission and gear shifting operations. The Sinotruk Howo A7 Gears Composite Member serves as the heart of the vehicle’s transmission system, ensuring optimal torque delivery and operational efficiency under the most demanding commercial driving conditions.
Engineered with precision and durability in mind, the Sinotruk Howo A7 Gears Composite Member incorporates advanced gear technology including range synchronizers, planetary gear systems, output shafts, and specialized bearing arrangements. Each component within this composite member is manufactured to exact tolerances using high-grade materials that can withstand extreme loads and prolonged operational stress. The integration of sophisticated synchronization mechanisms ensures smooth gear engagement while minimizing wear and operational noise, contributing to enhanced driver comfort and vehicle performance.
The planetary gear system within the Sinotruk Howo A7 Gears Composite Member provides multiple gear ratios that enable the truck to handle various load conditions and terrain types efficiently. This system includes sun gears, planetary gears, and ring gears that work together to distribute torque evenly while maintaining compact dimensions. The precision-engineered synchronizer assemblies facilitate seamless gear changes without grinding or power interruption, ensuring optimal power delivery and fuel efficiency throughout the vehicle’s operational range.
As a complete transmission solution, the Sinotruk Howo A7 Gears Composite Member simplifies maintenance procedures and reduces vehicle downtime during repairs or overhauls. The comprehensive design includes all necessary gear components, shafts, bearings, and mounting elements in precisely matched configurations, ensuring perfect compatibility and optimal performance. This integrated approach to transmission component packaging reflects Sinotruk’s commitment to quality and customer convenience, providing truck operators with reliable solutions that maintain the original performance standards of the Howo A7 transmission system while enhancing serviceability and longevity.
| NO. | Part NO. | Description |
|---|---|---|
| 1 | AZ2220100105 | Transmission housing |
| 2 | WC0900326020 | Roller bearing |
| 3 | Q5290630 | Pin |
| 4 | Q5280430 | Pin |
| 5 | AZ2203100002 | Planet bracket assembly |
| 6 | WC0900321255 | Hex screw M12*L15 |
| 7 | WG2215100001 | Planet bracket assembly |
| 8 | WG2212100001 | Torque sleeve |
| 9 | AZ2252100001 | Output shaft |
| 10 | WG2212100001 | Glue |
| 11 | WG2212100005 | Sun gear gasket |
| 12 | AZ2203100003 | Sun roller and sheath assembly |
| 13 | WG2212100002 | Spine sleeve |
| 14 | Q38375 | Retainer |
| 15 | WG2212100003 | Slave |
| 16 | WG2212100001 | Sun gear |
| 17 | WG2212100001 | Planet gear |
| 18 | WG2212100001 | Block |
| 19 | WG2090321118 | Roller |
| 20 | WG2212100004 | Planet gear |
| 21 | WG2212100005 | Shim |
| 22 | WG2212100006 | Shim |
| 23 | WG2090321055 | Retainer |
| 24 | WG2090321057 | Roller bearing |
| 25 | WG2090321155 | Retainer |
| 26 | WG2090321150 | Roller bearing |
| 27 | WG2212100006 | Annular gear |
| 28 | WG2212100007 | Bracket |
| 29 | WG2212100008 | Retainer |
| 30 | Q15881240 | Hex bolt |
| 31 | Q101121 | Flat washer |
| 32 | WG2212100002 | Torque sleeve |
| 33 | WG2212100005 | Gear hub assembly |
| 34 | WG2212100003 | Block sleeve |
| 35 | WC2210100009 | Syn ring |
| 36 | WC2210100007 | Syn tooth base |
| 37 | WC2220200001 | Block |
| 38 | WC2220200003 | Spring |
| 39 | WC2229200003 | Spring cage |
| 40 | WC9900991130 | Retainer |
| 41 | WC2210100008 | Syn sleeve |
| 42 | WC2212100001 | Shaft fork swing block |
| 43 | WC2212100001 | Shaft fork |
| 44 | WC220100000 | Gear hub assembly |
| 45 | WC220100007 | Guide ring assembly |
| 46 | WC090999024 | Wave spring washer |
| 47 | WC2229100045 | Shaft fork support pin |
| 48 | WC2229100048 | Plate gasket |
| 49 | WC2229100041 | End plate gasket |
| 50 | WC2229100047 | PTO shaft cover |
| 51 | Q15081216 | Hex bolt |
| 52 | Q40317 | Spring washer |
| 53 | WC9903356218 | Roller bearing |
| 54 | A2220810005 | Adjust shim |
| 55 | WC2229100055 | Adjust shim |
| 56 | WC2229100056 | Adjust shim |
| 57 | WC2229100057 | Adjust shim |
| 58 | WC2210100010 | Range worm |
| 59 | WC9900973603 | O-ring |
| 60 | WC9900973700 | O-ring |
| 61 | WC2229100090 | Pitons |
| 62 | WC9900976900 | O-ring |
| 63 | A229083970016 | Hex nut |
| 64 | WC2229100049 | Paper gasket |
| 65 | WC2222100009 | Cyclinder |
| 66 | Q15081065 | Hex bolt |
| 67 | Q40310 | Spring washer |
| 68 | A222103100008 | End plate assembly |
| 69 | WC2122100001 | End plate assembly |
| 70 | WC2122100009 | Connected assembly |
| 71 | Q150B1055 | Hex bolt |
| 72 | AZ9003070105 | Oil seal |
| 73 | WC2121100018 | Output flange φ180 face tooth |
| 74 | Q150B1020 | Hex bolt |
| 75 | WC2129210019 | Spring |
| 76 | WC2120310002 | Pin |
| 77 | WC2129100056 | Pin |
| 78 | WC2129100175 | Subplate |
| 79 | Q150B1075 | Hex bolt |
| 80 | WC2129100052 | Subplate |
| 81 | WC2129100054 | Press block |
| 82 | WC2129100174 | Subplate |
| 83 | WC2129100173 | Locking plate |
| 84 | AZ9007990001 | Glue |
| 85 | Q170B1055 | Hex holed bolt |
| 86 | Q40310 | Spring washer |
| 87 | AZ9007970242 | Glue |
| 88 | WC2129100072 | Press block |
| 89 | WC2129100073 | Bolt |
| 90 | Q150B0820 | Hex bolt |
| 91 | AZ2129100075 | Cover |
| 92 | Q40310 | Spring washer |
| 93 | AZ9007970271 | Glue |
| 94 | WC2129100062 | Paper gasket |
| 95 | WC2129100061 | Hange plate |
| 96 | Q150B1050 | Hex bolt |
| 97 | Q150B1060 | Hex bolt |
| 98 | Q40310 | Spring washer |
| 99 | WC2129100011 | Fasten nut |
| 100 | WC2129100071 | Plug |
| 101 | WC2129100074 | Locking plate |
| 102 | WC2121100002 | Shaft fork |
| 103 | WC9003070800 | O-ring |
| 104 | WC9003801187 | bolt |
| 105 | WC9003070800 | O-ring |
| 106 | WC9003801058 | Hex bolt |
| 107 | WC9003073150 | O-ring |
| 108 | WC9003345138 | Roller pin |
Our Sinotruk Howo A7 Gears Composite Member is manufactured using premium materials and state-of-the-art production techniques to ensure exceptional durability and performance under the most demanding operating conditions. Each component undergoes rigorous quality control checks to guarantee precise tolerances and perfect compatibility with your Howo A7 transmission system. We utilize high-grade alloy steels for gears and specialized bearing materials that provide superior load capacity and extended service life. This commitment to quality ensures that our Gears Composite Member delivers reliable performance and maintains optimal transmission efficiency throughout its operational lifecycle.
We provide comprehensive technical support and detailed documentation to facilitate easy installation and maintenance procedures. Our Sinotruk Howo A7 Gears Composite Member comes with complete assembly instructions and compatibility verification to ensure straightforward installation and optimal performance. With extensive inventory and efficient logistics network, we guarantee prompt delivery to minimize your vehicle downtime. Our customer service team possesses specialized knowledge of Sinotruk transmission systems and can provide expert guidance for all your component replacement and maintenance needs.
Competitive pricing combined with uncompromising quality makes our Sinotruk Howo A7 Gears Composite Member an outstanding value proposition for fleet operators and repair facilities. We maintain strict quality standards that meet or exceed OEM specifications, ensuring reliable performance and longevity under extreme operating conditions. Our products are backed by comprehensive warranty coverage that protects against manufacturing defects, giving you confidence in your investment. We continuously refine our manufacturing processes to incorporate the latest advancements in transmission technology and material science.
Choosing our Sinotruk Howo A7 Gears Composite Member means selecting a partner dedicated to your operational success and vehicle reliability. We understand the critical role that transmission components play in heavy-duty trucking operations and strive to deliver products that exceed performance expectations. Our commitment to customer satisfaction extends beyond the initial purchase, with ongoing support and resources to help maintain your vehicles at peak performance levels. Trust our expertise and quality assurance for all your Sinotruk Howo A7 transmission component requirements and experience the difference that genuine quality makes in vehicle performance, operational efficiency, and total cost of ownership.
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If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.