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Manufactured to strict OEM standards, this truck transmission synchronizer sleeve is perfectly compatible with 7-speed torque converter manual transmissions, making it an ideal replacement part for dump trucks and other heavy commercial vehicles. It effectively resolves common transmission issues such as gear grinding, shifting hesitation, and power loss, significantly reducing downtime for fleet operators and truck maintenance service providers. Our CNC machined synchronizer gear sleeve undergoes rigorous quality control at every production stage, ensuring consistent performance and long service life even under continuous heavy-load operations.
Our heavy-duty truck synchronizer sleeve achieves ISO 6-8 level tooth profile accuracy with a tooth surface roughness of Ra ≤ 1.6 μm, guaranteeing smooth meshing and ultra-low operating noise. The tooth alignment error is strictly controlled within 0.02 mm after heat treatment, ensuring perfect dimensional stability and precise assembly fit, which eliminates transmission vibration and improves overall power transmission efficiency.
With a rated torque capacity of 1000 lb-ft, this dump truck transmission part is specifically engineered to withstand the extreme loads encountered in construction and mining dump truck operations. It is fabricated from high-grade steel that offers excellent impact resistance and wear resistance, preventing premature failure under frequent start-stop and heavy-haul conditions.
We employ state-of-the-art carburizing treatment to achieve a surface hardness of 58-62 HRC with an infiltration layer depth of 0.8-1.2 mm, creating a hard, wear-resistant surface while maintaining a tough, ductile core. Additionally, shot peening treatment introduces residual compressive stress, which extends the fatigue life of the EIRO CNC synchronizer sleeve by 20%-30% compared to standard products.
Manufactured to exact OEM dimensions, this synchronizer sleeve is a direct drop-in replacement for original EIRO transmission parts, requiring no modifications during installation. This significantly reduces repair time and labor costs for truck parts distributors and maintenance workshops.
Basic Info. | |
Model NO. | Cooling System |
1356304024 | Air Cooled |
Efficiency | Material |
Triple Plate Clutch | Steel |
Speeds | Torque Capacity |
7-speed | 1000 lb-ft |
Type | Warranty |
Torque Converter MT | 1year |
Payment | Shipping |
Tt L/C | by Sea |
Brand | Truck Type |
Sinoascend | Dump Truck |
Transport Package | Specification |
Standard Packagingwooden Box | OEM Standard Size |
Trademark | Origin |
SINOASCEND | Jinan Shandong, China |
HS Code | Production Capacity |
8708507990 | 5000PCS/Month |
Packaging & Delivery | |
Package Size | Package Gross Weight |
50.00cm × 50.00cm × 60.00cm | 3.000kg |
1316 304 010 | Two shaft first gear |
1316 304 002 | Two shaft second gear |
1356 302 103 | Input shaft |
1316 302 067 | input shaft gear |
1316 304 103 | Two-axis step gear |
1316 303 071 | Counter shaft gearing gear |
1316 303 065 | Counter shaft fourth gear |
1316 305 008 | Idler |
1356 304 035 | Two axis |
1316 304 008 | Two-shaft third-speed gear |
1316 303 005 | Countershaft third gear |
1316 303 033 | intermediate shaft |
1316 304 235 | reverse gear |
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Our production facility, staffed by over 500 skilled workers, follows a comprehensive manufacturing process: precision forging → rough machining → controlled heat treatment → CNC precision finishing → surface strengthening treatment. We have obtained ISO 9001:2015 quality management system certification, and every batch of products undergoes strict third-party metallographic inspection and hardness testing. We implement a pre-production sample confirmation system and a 100% final inspection before shipment, ensuring that each OEM standard synchronizer sleeve meets or exceeds industry performance standards.
We offer comprehensive customization services tailored to the specific needs of commercial clients. Whether you require custom dimensions, material specifications, or branded packaging, our engineering team can develop solutions based on your drawings or samples. We provide free product samples (freight charges borne by the customer) and have a custom production lead time of 20-30 days. We also support small-batch customization to meet the diverse needs of regional distributors and fleet operators.
It is specifically designed for dump trucks equipped with EIRO series 7-speed torque converter manual transmissions.
For in-stock items, delivery takes 3-7 days. For out-of-stock items, production and delivery take 20-30 days depending on order quantity.
Yes, we offer detailed installation guides and remote technical assistance to ensure proper installation and optimal performance.
The minimum order quantity for custom synchronizer sleeves is 100 pieces.
