Ford Changan ECOSPORT Rear Brake Disc

This part is widely compatible with multiple Ford models that share the same rear braking platform. Before purchasing, the most reliable method is to verify the vehicle's VIN or refer to the part number of the old component removed from the original vehicle. You may also consult professional auto parts suppliers or conduct cross-verification using the official brand parts catalog.

The installation of the braking system requires professional tools and expertise. When replacing Ford Changan ECOSPORT rear brake disc GN152A315BA , it is mandatory to conduct a simultaneous inspection of the matching brake pads, and replacement of these brake pads is generally recommended to ensure the optimal running-in condition of the new and old friction pairs. During installation, the wheel hub nuts must be tightened in accordance with the standard torque. After installation, perform several gentle brake run-in cycles to evenly remove the coating, enable full fitting between the brake pads and the disc surface, and achieve the optimal working condition.

Ford (Changan Ford) ECOSPORT 2.0 S 4WD 2017-

There are different corresponding codes for the rear brake disc Rear Disc Brake of FORD GN152A315BA

Ford Changan ECOSPORT rear brake disc GN152A315BAPerformance Enhancement Layer: Strengthening Technology Penetrating into the Metal Skeleton

If the protective coating is regarded as the "outer garment", heat treatment modification serves as the reinforcement that penetrates deep into the metal "skeleton". Among relevant technologies, Ferritic Nitrocarburizing (FNC) is a revolutionary surface engineering technology.

In a controlled furnace atmosphere, this process infiltrates nitrogen and carbon elements into the surface layer of brake discs. As a result, a nitrocarburide layer approximately 10-30 microns thick (commonly known as the "white bright layer") is formed on the braking surface.

This layer features extremely high hardness, which can significantly improve the wear resistance and anti-seizure performance of brake discs.

More ingeniously, a microscopic "porous layer" will form on the surface of the compound layer. This structure can effectively absorb vibration at the initial stage of braking, greatly reduce unpleasant braking noise and jitter, and directly improve driving and riding comfort.

By precisely controlling preheating oxidation, nitriding temperature (e.g., 520-580℃), atmosphere ratio (e.g., ammonia gas, carbon dioxide) and slow cooling process, it is possible to ensure the strengthening layer is uniform and stable while avoiding part deformation.

Many people think brake disc (Ford Changan ECOSPORT rear brake disc GN152A315BA)
machining is just simple cutting and grinding, but in fact, it's a systematic project that integrates precision control, process innovation and detail management-our brake disc machining workshop is built to turn this "precision demand" into reality, focusing on OE-level precision machining for passenger cars, new energy vehicles and commercial vehicle brake discs. Unlike traditional workshops that only pursue production efficiency, we take "precision first, consistency as the core" as the principle, integrating intelligent equipment, professional operation and full-process traceability, which is completely different from the conventional machining mode and has become a core competitive advantage in the global auto parts industry.

First of all, the workshop adopts a constant temperature and humidity precision machining environment, a detail that is easily ignored by ordinary manufacturers but crucial for brake disc precision. We control the workshop temperature within 20±2℃ and humidity within 45%-55% through intelligent air conditioning systems-this is because metal materials will have slight thermal expansion and contraction with temperature changes, which will affect the machining accuracy of the brake disc. By maintaining a stable environment, we ensure that the dimensional deviation of each brake disc during machining is controlled within ±0.001mm, far exceeding the industry average standard of ±0.003mm. To put it simply, this kind of environment ensures that every brake disc we produce has the same precision, avoiding the problem of inconsistent performance caused by machining errors.

Q1: My vehicle is a 2016 Ford Focus MK3 (1.6L). The rear brake rotors are worn out. Can part GN152A315BA be installed directly? Do brake pads need to be replaced at the same time?

It can be fitted directly. The rear wheels of Focus MK3 feature four bolt holes with a PCD of 108mm and a center bore of 63.5mm, and GN152A315BA Disc Brake is a perfect match. The standard original thickness of the stock rear rotor is 9mm; replacement is mandatory once wear reduces it to 7.5mm, as marked MIN TH 7.5 engraved on the rotor edge. It is highly recommended to replace the rear brake pads concurrently. The friction material of old pads wears to contour the used rotor surface, resulting in merely 60% contact area when paired with new rotors, which drastically cuts braking performance and triggers abnormal squealing noises. Low-metallic NAO-formula brake pads are recommended, matching the specification of original Ford factory parts.

Q2: After installing Disc Brake GN152A315BA, a prolonged high-pitched squeal comes from the rear wheels during low-speed reverse parking. Is this caused by defective rotors?

The squeal is most likely unrelated to poor rotor quality. GN152A315BA is pre-machined with six noise-reduction slots engineered to eliminate such high-frequency screeching. Complete two inspection items first: first, check whether roughly 2mm chamfers have been ground onto both ends of brake pads; sand the pad edges with abrasive paper if the chamfers are absent. Second, confirm if the caliper slide rails and guide pins were thoroughly cleaned prior to installation. Insufficient lubrication or seized guide pins lead to uneven contact between pads and rotors and subsequent squeaking. If noise persists after these fixes, it will normally fade away automatically after a 300-kilometer running-in period.

Q3: Is this rotor compatible with the rear axle of my 2014 Ford Fiesta MK7? What dimensional differences exist compared with the Focus variant?

It is applicable. The Fiesta MK7 rear wheels also adopt four bolts with 108mm PCD and 63.5mm center bore, identical to Focus MK3. Both vehicle models share rear rotors with an outer diameter of 253mm and standard thickness of 9mm, making GN152A315BA interchangeable for both. The only minor discrepancy lies in the rear caliper piston diameter: 33mm for Fiesta versus 35mm for Focus, yet this difference exerts no impact on rotor fitting or regular operation. Avoid harsh emergency braking within the first 200 kilometers of the break-in phase post installation.

Consumer demand for brake discs is also showing a "personalized and professional" trend. In the past, consumers only paid attention to the fitment and price of brake discs, but now, with the popularization of automotive knowledge, more users began to pay attention to the core performance of brake discs. For example, off-road vehicle owners pay attention to the impact resistance and wear resistance of brake discs; urban commuters pay attention to the low noise and comfort of braking; NEV owners pay attention to the corrosion resistance and low-temperature stability of brake discs. This personalized demand has promoted manufacturers to launch scenario-based customized products, and the "customized service" for special models and special scenarios has become a new profit growth point.

Faced with these industry changes, we have always adhered to the concept of "innovation-driven, market-oriented", and continuously optimized our product layout and technological strength. We have established a regional R&D center to develop targeted products according to the demand characteristics of different regions; invested a lot of funds in the research and development of low-carbon materials and environmentally friendly processes, complying with global carbon neutrality requirements; and built a standardized after-sales service system to provide professional certification support and technical guidance for global distributors. Committed to providing high-quality, compliant and customized brake disc solutions, we are working with global partners to promote the high-quality and sustainable development of the brake disc industry, and seize the opportunities brought by industry iteration.

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