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Engineered to be fully interchangeable with original ZF series parts and specifically optimized for 7-speed dump trucks, our truck transmission synchronizer ring meets strict OEM quality standards and delivers exceptional performance in demanding commercial vehicle applications. SINOASCEND, a trusted manufacturer of heavy-duty truck drivetrain parts, produces high-quality heavy duty truck synchronizer rings with a monthly output of 5000 pieces, providing reliable supply to truck parts distributors and fleet managers worldwide. Our products are extensively used in Southeast Asia and Africa, known for their superior wear resistance and extended service intervals.
We use industry-leading materials to maximize the lifespan of our ZF compatible synchronizer ring. Axle components are manufactured from 20CrMo, 40CrMo and 42CrMo alloys, which offer excellent tensile strength and impact resistance. The friction surface features a high-copper content sleeve, significantly improving gear and cross-shaft wear resistance and effectively preventing premature gear scuffing. Gears are made from 22CrMoH steel and undergo double forging to ensure a uniform, smooth tooth surface and reduce operating noise by up to 15%.
Our 7-speed truck transmission synchronizer ring utilizes high-precision gear grinding technology, achieving a 6-level inspection standard for dimensional accuracy and tooth profile. All critical components undergo 12 hours of specialized vacuum heat treatment, reaching a hardness of 60-62HRC, which greatly enhances wear resistance and ensures compliance with strict international quality inspection standards. This combination of precision machining and advanced heat treatment guarantees consistent performance even under continuous high-torque operation in construction and logistics applications.
Every dump truck synchronizer ring is assembled on a dedicated automated production line and undergoes 100% individual inspection to ensure zero defects. We implement a full-process quality control system that covers raw material procurement, production processing and final shipment, ensuring that every product meets or exceeds original equipment specifications. Our unified brand packaging, including high-end cardboard boxes, anti-static inner bags and shock-absorbing foam inserts, provides superior protection during long-distance transportation, with thickened wooden boxes used for heavy or fragile items.
Basic Info. | |
Model NO. | Cooling System |
1310304175 | 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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With over a decade of specialized experience in the heavy-duty truck parts industry, SINOASCEND operates two state-of-the-art manufacturing facilities with more than 500 trained production workers. Our ZF series synchronizer ring is manufactured using advanced CNC equipment and follows strict lean manufacturing processes. We hold ISO 9001:2015 certification and conduct comprehensive third-party testing, including metallographic inspection, hardness testing and friction coefficient verification, to ensure product quality. We maintain full traceability throughout the production process, allowing us to quickly address any issues and ensure customer satisfaction. Pre-production samples are provided for customer approval, and a final full inspection is carried out before every shipment.
We offer flexible customization services to meet the unique needs of truck manufacturers and parts distributors. Our OEM synchronizer ring can be tailored to your exact specifications:
Custom dimensions and friction material formulations based on your technical requirements
Full brand customization, including logo printing, packaging design and labeling
Customized packaging solutions to align with your brand identity
Fast turnaround times for urgent custom orders
It creates friction between the rotating gear and the synchronizer hub, matching their rotational speeds before engagement to prevent gear clash and damage.
It is fully interchangeable with ZF series 7-speed transmissions used in dump trucks and other heavy-duty commercial vehicles.
Under normal operating conditions, our synchronizer rings have a service life of 150000-200000 kilometers.
Yes, we offer free product samples, but customers are responsible for the international freight cost.
