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Sitrak ECAS Control Unit – C7H

Sitrak ECAS Control Unit – Genuine OEM for C7H

The Sitrak C7H ECAS Control Unit is a sophisticated electronic suspension management system that includes the ECU, remote controller, height‑select switch, and all mounting hardware for precise air suspension control. Browse the full Sinotruk Catalog for OEM chassis and suspension components.
ECAS Control Unit

Product Parameters of ECAS Control Unit

No.Part No.Name
1WG9925585111ECAS Remote Control Bracket
2WG9925585101ECAS (6×2 Double Point) Electronic Control Unit
3WG9925585110ECAS Remote Controller
4812W25503-6055Triple Height Selection Switch
5Q40406Light Spring Washer
6Q40406Light Spring Washer
7Q2140610Cross Recessed Pan Head Screw
8Q340B06Type 1 Hexagonal Nut
9712W25441-0030ECAS Remote Control Fixing Bracket
10YG9600580001ECAS Controller Mounting Bracket
11Q2140830Cross Recessed Pan Head Screw
12810-94289-0199Spacer Tube
13712-62860-0030Left Rear Floor Mat Rework

Component Breakdown – Genuine Sitrak ECAS Control Unit System

ECAS Remote Control Bracket

The ECAS Remote Control Bracket is a sturdy steel bracket that provides a secure mounting point for the remote controller inside the cab. It is designed to position the controller within easy reach of the driver, ensuring convenient operation of the air suspension system.

ECAS (6×2 Double Point) Electronic Control Unit

The ECAS (6×2 Double Point) Electronic Control Unit is the intelligent brain of the system, specifically calibrated for 6×2 axle configurations with dual‑point suspension. It processes inputs from height sensors and the remote controller to adjust air spring pressures, maintaining optimal ride height and load distribution.

ECAS Remote Controller

The ECAS Remote Controller is a hand‑held control unit that allows the driver to manually adjust the vehicle’s ride height from inside or outside the cab. It features intuitive push‑buttons for raising, lowering, and recalling preset heights, making loading and unloading operations more efficient.

Triple Height Selection Switch

The Triple Height Selection Switch is a dashboard‑mounted control that enables the driver to select between three preset ride heights – normal, raised, and lowered. This feature is particularly useful for docking, trailer coupling, and navigating low‑clearance areas.

Light Spring Washer

The Light Spring Washer is used in conjunction with screws to provide a locking action, preventing them from loosening under vibration. Its lighter construction is suitable for the lower torque requirements of the ECAS mounting hardware.

Cross Recessed Pan Head Screw

These cross recessed pan head screws are used to fasten various ECAS components, including brackets and the remote controller. Their pan head design provides a large bearing surface, and the cross recess allows for easy installation with a standard screwdriver.

Type 1 Hexagonal Nut

The Type 1 Hexagonal Nut is a standard metric nut used to secure the ECAS mounting brackets. It is zinc‑plated for corrosion resistance and provides a reliable, vibration‑proof fastening when used with the corresponding screws.

ECAS Remote Control Fixing Bracket

This dedicated fixing bracket is specifically designed to hold the ECAS remote control unit in a convenient location, typically on the dashboard or centre console. Its shape ensures a perfect fit and prevents the remote from moving during driving.

ECAS Controller Mounting Bracket

The ECAS Controller Mounting Bracket is a robust metal frame that securely mounts the main ECAS electronic control unit to the vehicle chassis. It isolates the ECU from road vibrations and provides protection against impact damage.

Spacer Tube

The Spacer Tube is a cylindrical metal component used to maintain accurate spacing between mounting surfaces. It ensures that the ECAS brackets and the ECU are correctly aligned, preventing stress on the mounting points.

Left Rear Floor Mat Rework

The Left Rear Floor Mat Rework is a specifically trimmed floor mat section that accommodates the ECAS controller mounting bracket in the rear cab area. It ensures a neat, factory‑finished appearance while providing clearance for the ECU.

Why Choose Our ECAS Control Unit?

OEM Precision and Compatibility

Our ECAS Control Unit is manufactured to Sinotruk’s exacting standards, ensuring seamless integration with the C7H chassis and air suspension system. Every bracket, sensor, and controller is calibrated for the 6×2 double‑point configuration.

Precise Ride Height Control

The ECAS system delivers accurate and repeatable ride height adjustments, improving load stability, trailer alignment, and driver comfort. The remote controller and height‑selection switch offer flexible control options.

Complete Hardware Included

We supply every bracket, screw, washer, nut, and spacer tube needed for a full installation. The included floor mat rework ensures a factory‑fit finish. No extra parts to source – simply install and operate.

Rugged and Durable

All ECAS Control Unit components are built to withstand the harsh conditions of heavy truck operation, including extreme temperatures, moisture, and vibration. The ECU is fully sealed and tested for long‑term reliability.

Comprehensive Overview of the ECAS Control Unit System

The ECAS Control Unit is an advanced electronic air suspension management system that replaces traditional mechanical leveling valves with precise electronic control. It continuously monitors vehicle height and adjusts air spring pressure to maintain the optimal ride height under all load conditions.

The system is specifically configured for the 6×2 double‑point suspension layout, which is common on C7H tractors used for long‑haul and distribution applications. The ECU processes signals from height sensors and driver inputs to deliver fast, accurate height adjustments.

The remote controller allows the driver to raise or lower the suspension from outside the vehicle, making it easy to couple trailers, adjust loading height, or clear obstacles. The triple height selection switch provides three preset levels for quick changes.

Installation of the ECAS Control Unit is simplified by the comprehensive hardware kit. The ECU mounting bracket is bolted to the chassis using the provided M8 screws and nuts, with spacer tubes ensuring correct alignment. The remote control bracket and fixing bracket are mounted inside the cab.

The left rear floor mat rework is a pre‑trimmed mat that accommodates the controller mounting bracket, maintaining a clean interior appearance. This attention to detail ensures that the installation looks factory‑original.

The ECAS Control Unit also includes self‑diagnostic capabilities, alerting the driver to any faults via a dashboard warning light. This simplifies troubleshooting and reduces downtime.

We recommend periodic inspection of the ECAS components, especially the height sensors and air lines, to ensure accurate operation. Replacing an aging ECU with our genuine unit restores full suspension performance and can improve fuel efficiency by maintaining optimal ride height.

For fleet operators, standardising on the ECAS Control Unit across multiple trucks simplifies training and maintenance. The uniform hardware and controls reduce operator error and make diagnostics easier.

The ECAS Remote Controller is designed for intuitive operation, with clearly marked buttons for raising, lowering, and selecting preset heights. Its ergonomic design fits comfortably in the hand, reducing driver fatigue during frequent use.

The Triple Height Selection Switch is illuminated for night use and provides tactile feedback, allowing the driver to change heights without looking away from the road.

All fasteners – screws, nuts, and washers – are made from corrosion‑resistant materials to ensure long‑term reliability. The light spring washers provide additional locking security, preventing loosening from road vibration.

We back our ECAS Control Unit with a 12‑month warranty against manufacturing defects. Should any component fail, we will replace it free of charge. Our technical support team is available to assist with installation queries.

We ship worldwide with tracking, and expedited shipping is available for urgent orders. Use the Send Email or Get Quotation buttons to request a personalised quote.

Choosing a genuine ECAS Control Unit ensures that your C7H maintains its factory suspension performance and reliability. Aftermarket alternatives may not offer the same calibration or build quality.

The ECAS system contributes to improved tyre life by maintaining even load distribution across all axles. This reduces uneven wear and extends tyre replacement intervals, lowering operating costs.

Order your ECAS Control Unit today and experience the precision and convenience of electronic air suspension control. Our team is ready to assist with any technical questions.

We maintain a large stock of ECAS components to ensure fast delivery. Whether you need a single unit or a fleet‑wide upgrade, we have the inventory to meet your demands.

With the increasing focus on vehicle efficiency and driver comfort, the ECAS Control Unit is an essential upgrade for modern heavy trucks. It provides precise control, improves safety, and enhances the overall driving experience.

Thank you for considering our ECAS Control Unit for your Sitrak C7H. We are confident that our genuine OEM product will exceed your expectations in terms of quality, durability, and performance.

The ECAS Control Unit is designed for easy DIY installation with clear instructions, but professional installation is recommended for optimal results. Our support team is available to guide you through the process.

With proper installation and regular maintenance, this system will provide years of reliable service, keeping your C7H at the optimal ride height for any load condition.

Upgrade your truck’s suspension management with the ECAS Control Unit – the intelligent choice for better handling, reduced wear, and increased productivity.

Online Catalog of SINOTRUK Parts

Learn More

Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.

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