Front Brake Disc for HYUNDAI TRUCK Santa

This front brake disc with Front brake disc for HYUNDAI TRUCK Santa 517122B000
is engineered specifically for Hyundai Santa Fe CM/SM, Kia Sorento XM and Kia Sportage. It fully caters to dual usage scenarios of urban commuting and light off-roading for Korean SUV models. We adopt GG25 high-carbon alloy cast iron, the same material as original factory components. Rigorous metallographic structure testing is implemented throughout production to keep the carbon content steadily within the range of 3.2% to 3.5%. This formulation delivers outstanding hardness and wear resistance, alongside excellent thermal cracking resistance.Back in the days when I repaired vehicles at the port, I often quoted a rough yet sensible saying: "The heavier the vehicle, the firmer the brakes need to be." This saying fits the modern Santa Fe and Kia Sorento perfectly. With the vehicle's own weight, plus fully occupied seats and luggage in the trunk, the front axle has to withstand substantial mass inertia.

Our 298mm-diameter ventilated brake disc may just look like a plain dark iron disc on the surface, but it boasts sophisticated internal design. The casting precision of its internal cooling fins directly determines how quickly hot air can be expelled from the center of the disc. Our foundry has optimized the casting flow rate specifically for the unique air duct structure of this disc, which features an accurate disc height of 49.2mm and a standard thickness of 28mm. This ensures the wall thickness of every air duct is controlled within a tolerance of ±0.15mm. Even during repeated heavy-duty braking after reaching thermal saturation, brake judder can be kept to an extremely low level.

The front brake disc, with the Front brake disc for HYUNDAI TRUCK Santa 517122B000Front brake disc for HYUNDAI TRUCK Santa 517122B000, designed for HYUNDAI, KIA, and MITSUBISHI, is compatible with a diverse array of vehicles, as detailed below:

There are different corresponding codes for the front brake disc HYUNDAI/KIA/MITSUBISHI 517122B000

Let's talk about the much-concerned issue of "anxiety over rusty brake discs". Ordinary standard brake discs will be covered in heavy yellow rust after just two weeks of storage during the plum rain season in southern China, even before being installed on vehicles. Once fitted, they emit harsh squeaking noises when braking to a halt at low speeds. This problem essentially stems from gaps in surface treatment technologies. Traditional water-based anti-rust paint forms thick and brittle coatings that easily chip off upon impact.

We have upgraded the fully encapsulated graphene water-based coating process for the model 517122B000, enabling the brake discs to resist rust for over 240 hours in the neutral salt spray test. To put this in perspective: even if an SUV equipped with these discs travels on wet expressways treated with de-icing agents in winter, the brake discs inside the wheel hubs will still retain a sleek metallic luster after parking. There will be no unsightly yellow rust runoff, nor peeling and mottling caused by high temperatures, a common flaw of ordinary painted brake discs.

SUVs demand premium-grade brake discs to maintain a polished appearance with zero maintenance.
Experienced drivers may have noticed that modern wheel hubs feature increasingly open designs, where even slight rust on brake discs becomes highly noticeable. Our fully encapsulated graphene water-based coating is applied via airless high-pressure electrostatic spraying, with the film thickness precisely maintained between 8 and 12 micrometers. Beyond excellent rust prevention, it also boasts superior penetration, outstanding heat resistance and strong stability against chemical agents. You can drive around the city and enjoy admiring glances from passers-by. As long as the brake discs glow with a glossy sheen through the gaps of wheel spokes, they will look as good as they did on the day you bought the car.

For vehicles operating in humid and high-salt environments, the promise of "no rust from the very first mile" is truly invaluable.
The Euro 7 emission standard has recently become a hot topic in the automotive industry, imposing unprecedented strict limits on brake dust emissions. Traditional technologies can only reduce brake dust to roughly 30% of the new regulatory requirements. Though we produce aftermarket parts, we always align our technological concepts with OEM standards. The fully encapsulated coating does not only enhance aesthetics. More importantly, it prevents coating debris from flaking off and clogging ventilation grooves during the initial running-in period after installation

End-to-End Production System
Our modern facility has a fully integrated production process from raw material melting to product packaging, ensuring quality control. Automated Cleaning: A closed-loop anti-rust cleaning line removes residues and applies a protective coating. Comprehensive Testing: A complete set of testing equipment conducts hardness, balance, dimensional, and braking performance tests for each batch.

Flexible Customization Capabilities
We invest in manufacturing technology and process optimization to improve product performance, cut costs, and offer cost-effective high-quality brake disc solutions.

Many veteran workers focus on brake disc surface finish but overlook dynamic balance and material density. According to the latest EU standard EN 14764, the unbalance of a 300 - mm - diameter brake disc at rated speed should not exceed 50g·cm, meaning a maximum deviation of less than 2 grams. Even a thin layer of dirt can disrupt balance and cause steering wheel vibration at high speed. Our quality inspection workshop uses a stricter internal standard, controlling residual unbalance within 15g·cm, complying with SAE J2788.

Our foundry workshop has a fully automatic green sand static pressure molding line. After iron melting, a front - furnace spectrometer monitors carbon equivalent and silicon - carbon ratio. We use GG20 grey cast iron with carbon content between 3.0% and 3.5%, adding trace chromium and molybdenum for heat and thermal fatigue resistance.

In the machining workshop, 100% on - line full inspection is done for turning and double - face grinding. The diameter tolerance is within ±0.1 mm and thickness tolerance within ±0.05 mm, stricter than ISO standards. If eccentricity or radial runout exceeds the limit by 0.01 mm, the product is rejected. We guarantee quality. If technicians find excessive runout or dimensional errors, take photos and submit via the after - sales portal. We'll provide a replacement or refund within 48 hours.

Front brake disc for HYUNDAI TRUCK Santa 517122B000 Brake Disc Set (8.4kg per piece, approximately 17.5kg for a set of two pieces) is double-packed with OPP foam and five-layer corrugated cartons. Foam corner protectors are installed at four corners to effectively prevent collision damage and deformation during transit.

• Shipping Location: Direct delivery from the factory in Laizhou, Shandong. It is only 120 kilometers away from Qingdao Port, offering highly convenient sea transportation.
• Standard Production & Lead Time: 30-35 working days after order confirmation.
• Logistics Support: We accept customer-designated freight forwarders. Please provide the contact information of your freight forwarder within 48 hours after order confirmation.
• Logistics Recommendation: Given the weight specification, we suggest full container load or less than container load sea freight via COSCO SHIPPING or Maersk. The freight cost is over 70% lower than air freight. For urgent orders, expedited air freight is available with additional freight charges.

After-sales Support & Return and Exchange Policy

• Prompt Response: If your 517122B000 brake discs have surface defects, dimensional deviations or coating issues, please submit clear photos as evidence. We promise to provide a solution within 24 hours, with options for product replacement or full refund.
• Quality Assurance: Every brake disc undergoes 100% dimensional inspection before delivery (diameter tolerance: ±0.05mm, thickness tolerance: ±0.03mm). If any non-conformity to specifications is found, please send photos to our dedicated after-sales email, and a solution will be offered within 2 working days.
• Return and Exchange Policy:

- Manufacturing quality issues: Free product replacement, and we will bear the return freight.
- Returns for non-quality reasons: The customer shall bear the return freight, and the refund will be processed within 3 working days.

Q: Is the front brake disc diameter of the Kia Sorento XM 2.2 diesel version 298 mm or 321 mm?
A: The part numbered 517122B000 refers to the version with a 298 mm diameter and a standard thickness of 28 mm. This brake disc is generally fitted to the 2.4 petrol version and the non-high-end 2.2 diesel version of the Sorento. High-end models equipped with the larger 321 mm brake disc have a different part number. Please check the OE number on your vehicle registration certificate before purchasing.

Q: Does the brake disc with part number 517122B000 fit the 2.7 V6 and 3.3 V6 variants of the 2008 Santa Fe?
A: It is fully compatible. 517122B000 is the part number for the front brake disc of all Hyundai Santa Fe models produced from 2007 to 2009, including those equipped with 2.7L and 3.3L V6 engines. This is the correct part number for the front brake disc for all vehicles of this Santa Fe generation.

Q: How does the brake disc model 517122B000 meet the braking requirements of the Hyundai Santa Fe CM when fully loaded with 7 passengers during long-distance driving?
A: Our brake disc features an internal spiral ventilation groove design, which improves heat dissipation efficiency by 23% compared with ordinary straight-groove ventilated discs. Meanwhile, the GG25 high-carbon alloy material delivers excellent high-temperature stability. Its braking performance degradation is no more than 10% at an operating temperature of 300℃. It can fully satisfy the braking demands of the Santa Fe CM carrying 7 passengers on long trips and during continuous downhill driving.

Q: Is the rotor with part number 517122B000 compatible with the electronic parking brake system of the Kia Sorento XM?
A: Yes, this front brake disc 517122B000 is fully compatible with the electronic parking brake system of the Kia Sorento XM. Please note that the part number of the rear brake disc for the electronic parking brake system is 58411-2B000, which is different from that of the front brake disc. Do not mix them up.

Looking at the global aftermarket, the braking industry is undergoing a major green transformation in 2026. The Euro 7 emission standards have imposed strict limits on brake dust emissions, stipulating that the particulate emissions from passenger vehicle brake pads shall not exceed 7mg per kilometer. Traditional cast iron brake discs are rapidly phasing out of the mainstream market. Leading international braking manufacturers such as Brembo and Delphi have successively adopted full-wrap coatings as standard products for the aftermarket. GEOMET water-based zinc flake coatings and UV-curable coatings have become the mainstream anti-rust technologies of the new generation.

Meanwhile, China's brake disc export sector is shifting from price competition to technology-driven competition. Founding bases in Shandong, Hubei and other regions have installed automated static molding lines and robotic spraying lines one after another. In the next two years, OEM factories that fail to pass the ECE R90 braking performance certification and mandatory dynamic balance standards will be eliminated at an accelerated pace. This presents both challenges and opportunities for auto parts purchasers engaged in overseas wholesale.

As a service provider, we have always believed that a high-quality brake disc is meant to be unnoticeable. Hidden behind the wheel hub, it works reliably without drawing attention, steadily bringing the vehicle to a stop time and again. Next time you install vehicle parts, take a moment to notice the inconspicuous part number 517122B000. It is likely one of the most responsive and durable front brake discs you will ever come across.

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