Front Brake Disc for Volvo (Fuhao) XC60

Many people ask me why our brake discs, which are also made of gray cast iron, are more durable and quieter. The truth is quite straightforward-it all boils down to minor differences in materials and manufacturing processes.

We adopt HT250/GG20 high-carbon alloy cast iron, with hardness controlled between 187 and 235 HB. This hardness range is the optimal sweet spot we have identified through years of trials. If the hardness is too high, brake pads will wear rapidly and abnormal noise will easily occur; if the hardness is too low, the disc itself will wear out quickly and require frequent replacement. Our specified hardness perfectly strikes a balance between wear resistance and noise suppression.

With a diameter of 302 millimeters and a thickness of 20 millimeters, paired with an internal vented slot structure, heat dissipation is never a concern. The XC60 is an SUV with a substantial curb weight. When fully loaded with five passengers plus a trunk full of luggage and driving down continuous mountain downgrades, brake disc temperatures surge rapidly. Poor heat dissipation leads to brake fade-a spongy, unconfident braking feel the more you press the pedal. Our flow field-optimized vented slots function like small fans as they rotate, drawing in more cold air to quickly lower disc surface temperatures and maintain stable braking performance.

The Front Brake Disc for Volvo (Fuhao) XC60 31277357 is compatible with a wide range of cars, as follows:

Volvo XC60 SUV 05/2008 - 07/2018
Volvo Asia Pacific XC60 Nov 2014 - Dec 2017

The front brake disc for Volvo (Fuhao) XC60 31277357 corresponds to several different codes.

We have spared no effort in the surface treatment of the Volvo XC60 Front Brake Disc 31277357. Why? Because the XC60 originates from Northern Europe, where road de-icing salt is widely used in winter and severe salt spray prevails in coastal cities. If the anti-rust treatment of brake discs is substandard, the central hub and edges will develop severe rust in a short time. This is not only unsightly but will also cause potential safety issues over time.

Let's talk about our professional process: a double-layer coating system consisting of zinc-rich epoxy primer + acrylic polyurethane topcoat, with an additional water-based UV-cured coating applied on non-friction surfaces. It may sound complicated, but we will break it down in detail.
The pre-treatment process is the core determinant of paint adhesion.
The reason why the paint on many low-cost brake discs peels off quickly lies in inadequate pre-treatment. Cast iron brake discs come with surface scale, oil stains and grit. Direct painting on such surfaces results in floating paint that peels off easily with minor collisions.
Our brake discs undergo four rigorous pre-treatment procedures before painting:

These four procedures take more than one hour in total for pre-treatment alone. Small workshops never invest such time and precision; they usually only wipe the discs with cloth or perform casual soaking before painting, which inevitably leads to paint peeling.

We have completed cross-cut tests, where 100 small grids are scored on the painted surface and then taped to check paint loss. Our brake discs achieve a Grade 0 rating, meaning none of the 100 grids peel off. In contrast, some low-cost discs lose half the paint after taping, which makes their painting practically useless.

[Volvo XC60 Front Brake Disc, Part No. 31277357] Brake discs for this SUV model are not overly large in size yet demand extremely high precision. Our workshop is equipped with twelve CK6150 CNC lathes and four imported CNC grinding machines dedicated to the final precision grinding process. The flatness of the ground disc surface can be controlled within 0.02 millimeters - to put this into perspective, it is thinner than one-third of a human hair. When fitted on the vehicle and the brakes are applied, there will be no steering wheel vibration at all.

For casting, we adopt green sand static pressure molding lines instead of small workshops relying on manual sand casting. Our 1.5-ton medium-frequency induction furnace can produce molten iron enough to cast seventy to eighty discs per heat. Before the molten iron is tapped, it must pass inspection via a direct reading spectrometer. The contents of elements including carbon, silicon, manganese, sulfur, phosphorus, chromium and nickel are tested one by one, with a tolerance of no more than 0.01 percentage points. Any molten iron failing material standards is sent back to the furnace for remelting and must never proceed to subsequent production stages.

We maintain stringent quality control throughout the machining process. [Volvo XC60 Front Brake Disc, Part No. 31277357] Every single disc undergoes random sampling inspection with a coordinate measuring machine, covering all critical dimensions such as diameter, thickness, flatness, parallelism and mounting hole positional tolerance. Five percent of each production batch is sampled; if any non-conforming product is found, the entire batch will be reworked. Our lateral runout is controlled within 0.05 millimeters, a precision level that ranks among the top tier for products in the same price range.

Q1: Can this front brake disc with part number 31277357 for Volvo XC60 be used on both XC60 T5 and D4 models?
A: Yes, it is fully compatible. Low-power versions of the Volvo XC60, whether T5 or D4, are fitted with 308mm front brake discs, and part number 31277357 fits both variants interchangeably. Please note that the XC60 comes with two specifications of front brake discs: the standard 308mm disc and the larger 328mm disc. The part number 31277357 corresponds to the 308mm standard spec, which is factory-installed on most low-power trims. If you are uncertain about compatibility, we recommend sending us your vehicle identification number (VIN) or the original part number from your old disc for verification to eliminate any risks.

Q2: The minimum wear thickness of this brake disc is 18 millimetres. At what thickness should it be replaced?
A: While 18 millimetres is the theoretical wear limit, we suggest arranging a replacement when the disc thickness drops to approximately 18.5 millimetres. Here is the reasoning: newly installed brake pads require a break-in period. If the disc is already worn down to the absolute limit, the wear incurred during pad break-in will push the disc thickness below the safe threshold. Maintaining a small thickness buffer also safeguards against unexpected driving conditions and prevents brake failures mid-journey. SUVs carry greater curb weight than passenger sedans, which accelerates brake disc wear. Prioritise driving safety over minor cost savings.

Q3: My XC60 is the four-wheel-drive version. Will replacing the rear brake discs affect the brake force distribution of the four-wheel-drive system?
No. The brake force distribution of the four-wheel-drive system is controlled by the EBD and ABS modules, which has nothing to do with the brake discs themselves. As long as the replacement discs have the correct specifications and are properly installed, the system will automatically recognize them and distribute brake force normally. No additional matching procedures are required.

Q4: Are these brake discs compatible with the Electronic Parking Brake (EPB)?
The rear brake calipers of the first-generation XC60 adopt a traditional cable-operated mechanical handbrake (some late models may come with integrated EPB). Regardless of the type, the brake disc itself does not take part in parking braking - parking braking is realized when the parking mechanism inside the caliper clamps the brake pads. Therefore, part number 31277357 fits all rear axle configurations of the XC60.

Although the current ownership of pure electric vehicles is not particularly high, it is growing at a rapid pace. Equipped with an energy recovery system, electric vehicles rely less on mechanical braking, which theoretically reduces the wear and tear of brake discs. However, this does not diminish the importance of brake discs. On the contrary, less frequent usage makes brake discs more prone to rust corrosion, raising higher requirements for surface treatment. Our spray painting and anti-rust technology serve as a distinct advantage in this regard.

In addition, the SUV market has been expanding steadily in recent years, especially the luxury SUV segment. SUVs are generally heavier than sedans of the same class, placing greater load pressure on the braking system and setting higher standards for the strength and wear resistance of brake discs. We are optimizing material formulas tailored to the characteristics of SUVs to make early layouts in this market.

Overall, the passenger vehicle brake disc industry is gradually shifting from a price-competition model to one focused on technology, quality and service. Small manufacturers that seize market share merely through low prices will face increasingly difficult operating conditions in the future. Only factories with solid technological accumulation, reliable quality assurance and the ability to keep pace with policy changes can achieve long-term development.

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