FAST Transmission

FAST Transmission

Home / Products / DONGFENG POWERTRAIN / FAST Transmission / Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmissions Parts
Front View Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
Side View Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
Hardened Steel Piston Rod Detail Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
Rear View Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
Front View Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
Side View Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
Hardened Steel Piston Rod Detail Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
Rear View Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmission

Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmissions Parts

This is a genuine auxiliary box cylinder assembly (OE:JS220-1707060-16) specifically engineered for heavy-duty trucks equipped with FAST transmissions, serving as the pneumatic actuator that shifts the auxiliary gearbox between high and low ranges. It features a precision-cast iron body with hardened steel piston rod and integrated valve ports for reliable operation. Constructed from high-strength materials with corrosion-resistant seals, this assembly meets OEM quality standards. Third-party durability testing confirms it withstands repeated actuation cycles, vibration, and temperature fluctuations, making it the ideal replacement to restore your truck’s transmission shifting performance.

Product Attributes

Attribute NameAttribute Content
OE NumberJS220-1707060-16
Compatible ModelsHeavy-duty trucks with FAST 12-speed transmissions
Product NameAuxiliary Box Cylinder Assembly / Air Shift Cylinder
MaterialCast iron body, hardened steel piston rod, rubber seals
ColorBlack (painted cast iron)
FunctionPneumatic actuator for high/low range shifting in the auxiliary gearbox
Key FeaturesPrecision valve ports, hardened piston rod, corrosion-resistant seals, direct-fit design
Installation MethodDirect bolt-on to the FAST transmission auxiliary box
CertificationGenuine OEM FAST Transmission Component



PRODUCT DESCRIPTION

Top View Auxiliary Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
01

Cast Iron Construction & Precision Valve Design

This auxiliary box cylinder assembly OE JS220-1707060-16 is manufactured to exact FAST transmission specifications, using high-strength cast iron for exceptional durability and impact resistance. The assembly features a precision-machined body with integrated air valve ports, ensuring smooth and reliable actuation of the shift fork. The hardened steel piston rod is treated for wear resistance, and the rubber seals are designed to prevent air leaks and contamination. The 1:1 OEM design guarantees a seamless fit with the auxiliary box assembly, restoring factory shifting performance.


Air Valve Port Detail Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
02

Stiff or Inoperative Range Shifting

Truck operators often face issues with failing auxiliary cylinders, including air leaks causing slow/non-existent range shifts, stuck piston rods preventing gear changes, and corrosion leading to complete actuator failure. A faulty cylinder can result in being stuck in high or low range, reduced vehicle performance, and safety hazards. By choosing the genuine OE JS220-1707060-16 assembly, you eliminate these problems, restoring smooth, reliable high/low range shifting.


Angled View Auxiliary Box Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
03

OEM Quality & Rigorous Cycle Testing

As a critical transmission component, this cylinder assembly complies with strict OEM quality standards and has passed comprehensive actuation cycle testing. Test data shows the cast iron construction maintains structural integrity under repeated use, the precision valve design ensures consistent air pressure regulation, and all seals meet factory specifications for leak prevention. Each unit undergoes functional testing before leaving the factory, guaranteeing reliable operation with your FAST transmission. Backed by OEM traceability codes, this product ensures 100% authenticity.


OEM Part Number Label Detail Cylinder Assembly OE JS220-1707060-16 for FAST Transmission
04

Genuine Supply & Direct Installation

We are an authorized supplier of genuine OEM FAST transmission components, providing gearbox system parts to fleet operators, repair shops, and distributors worldwide. This cylinder assembly OE JS220-1707060-16 is supplied in protective packaging to prevent damage, ensuring it arrives ready for installation. Its direct-fit design allows for straightforward installation without custom modifications, reducing vehicle downtime. The durable construction ensures long service life, minimizing future maintenance costs. We offer a 24-month quality warranty and dedicated technical support for installation guidance.


TECHNICAL SUPPORT

1. Accessories selection consultation

- Provide ** intelligent selection tools ** (such as parts matching query system), input the vehicle model VIN code or engine model to match the corresponding parts number, reducing the selection error rate.


The technical team is available online 7×12 hours to answer technical questions about accessories (such as material compatibility and installation processes).


2. Customized development support

We offer specialized R&D services for special market demands (such as heat dissipation accessories for high-temperature regions in the Middle East and dedicated suspension components for road conditions in Africa), and complete sample delivery within six weeks.


3. Training and Technical materials

Provide remote/on-site training for the customer's after-sales team (such as diagnosis of electrical control accessories and DPF regeneration operation), along with multilingual versions of the "Accessories Installation Manual" and "Troubleshooting Guide".


4. Quality Traceability and Improvement

Through the QR code traceability system (one product, one code), track the production batch of accessories and the source of raw materials, respond quickly to quality complaints and initiate improvement processes.

AFTER-SALES AND LOGISTICS SUPPORT

After-sales service

After-sales service

Quality Assurance Policy


-The warranty period for original factory parts is 12 months (counting from the date of signature for receipt), covering material defects, process issues, and man-made damage.


- Provide "Localized Express repair Service" : Cooperate with third-party repair networks in markets such as Southeast Asia and the Middle East, and deliver emergency parts to designated repair points within 4 hours.


Return and Exchange Process


-The customer is required to submit the test report (such as a third-party appraisal) within the warranty period. After confirmation by Dongfeng, a reissue or refund will be arranged within 5 working days.

Logistics support

Logistics support

Warehouse Layout


-Five major regional accessory centers have been established globally (Southeast Asia, the Middle East, Africa, South America, and Europe) to achieve "next-day delivery" for mainstream accessories (covering customers within the regions).


Emergency Logistics Plan


-Emergency parts can be directly delivered within 48 hours via the "Dongfeng Exclusive Aviation Special Line" (such as engine ECU, brake valves and other key components).


Packaging Optimization

-Use shockproof and moisture-proof packaging (such as honeycomb cartons + pearl cotton), and reinforce fragile parts (such as glass, sensors), keeping the damage rate within 0.5%.