Rear Brake Disc Of Buick New Excelle

If you're sourcing reliable rear brake discs for Buick New Excelle fleet repairs or wholesale stock, the 90905240 model is engineered as a direct OE-equivalent replacement built for consistent braking performance and long service life. Unlike generic one-size-fits-all brake rotors on the market, this unit is dimensionally matched to factory specifications for Buick New Excelle sedans, eliminating fitment delays and installation rework for repair shops and distributors.

The 90905240 rear brake disc is purpose-built for the second-generation Buick New Excelle 1.5L sedan (2013–2017 model years), with a 1:1 match to original equipment mounting points, bolt pattern, hub bore size and outer diameter. As a solid rear axle brake rotor designed for daily passenger car driving scenarios, it delivers stable braking torque output that aligns perfectly with the Buick New Excelle's factory brake caliper and pad system, requiring no modification or shimming during installation.

Each 90905240 brake disc for Buick New Excelle is cast from SAE J431 G3000 high-carbon gray cast iron, formulated for optimal heat dissipation and uniform wear resistance. Our in-house machining controls hold lateral runout to ≤0.05mm, disc thickness variation (DTV) to ≤0.009mm, and friction surface roughness to Ra ≤1.6μm - tolerances that directly reduce brake pedal pulsation and low-speed squeal, two of the most common comeback complaints for cheap aftermarket rotors fitted to the Buick New Excelle platform.

This 90905240 rear brake rotor meets ECE R90 type approval standards and complies with RoHS and REACH environmental regulations, making it suitable for wholesale distribution across European, North American and Southeast Asian markets. For Buick New Excelle parts distributors, the model's exact cross-reference compatibility with OE part number 90905240 ensures seamless catalog integration and cuts down on customer fitment inquiry time.

The 90905240 rear brake disc for the new Buick Excelle features a unique design: three layers of anti-corrosion coating are applied to its non-friction surfaces. This innovation specifically addresses the common issue of brake disc rusting in humid regions of Southeast Asia, as well as on roads treated with de-icing salt during winter in Europe and North America.

Unlike those inexpensive alternatives-where spray-painted brake discs begin to develop peeling and blistering after just 3 to 6 months of use-our product employs a multi-layered manufacturing process that forms a chemically bonded protective layer, which not only enhances aesthetics but also prevents structural corrosion over prolonged use.

This coating process consists of three strictly controlled steps: First, a zinc-based phosphating pretreatment layer is applied to create a microporous base layer that enhances coating adhesion and prevents rust formation beneath the paint film; second, an epoxy primer containing 85% zinc is applied to provide active cathodic protection against corrosion; finally, an UV-curable acrylic topcoat is applied to enhance surface scratch resistance and withstand chemical erosion from road mud and brake fluid.

All non-friction surfaces of the 90 905240 model-including hub mounting surfaces, outer edges, and center holes-are fully coated to eliminate any rust-prone dead zones.

For every batch of 90905240-post brake discs produced, we randomly select samples in our laboratory for neutral salt spray testing. The results confirm that the coating surface resists red rust formation for up to 500 hours. In contrast, Buick Excelle brake discs with standard single-layer paint finish typically develop red rust after just 80 to 120 hours of salt exposure, leading to rapid corrosion on the wheel hubs and frequent customer complaints at repair shops.

Another crucial point is that the friction surface of brake disc 90905240 is left uncoated and precision-polished for uniformity, preventing paint from adhering to the brake pads-thereby avoiding abnormal braking noises or prolonged break-in periods. This design provides effective protection in rust-prone areas while maintaining optimal braking performance at contact surfaces.

All dimensions and performance data are strictly calibrated and manufactured in accordance with industry standards.

This rear brake disc is applicable to multiple vehicle models with stable compatibility and accurate fitting size. The detailed applicable models are listed below:

SAIC-GM Buick New Excelle, February 2013 onwards

This product corresponds to a variety of mainstream brand part numbers and OE codes, which can perfectly replace the original parts. The detailed cross-reference information is as follows:

Our 90905240 rear brake discs for the all-new Buick Excelle are all manufactured at our certified in-house factory accredited with the IATF 16949 automotive quality management system. The workshop is fully equipped with high-precision CNC vertical lathes, automatic double-sided grinders and a full set of fully calibrated professional measuring and testing equipment. Unlike many resellers sourcing generic brake discs from unqualified third-party factories with inconsistent batch quality, we oversee every production stage of the 90905240 model from raw material casting to finished product packaging, delivering consistently stable quality to all Buick Excelle parts buyers.

Multiple mandatory quality inspections are implemented for this brake disc: sampling dimensional checks after rough machining, one-by-one verification of disc runout and thickness variation post fine grinding with rework for substandard items, and full final inspection covering surface flaws, coating integrity and balance performance. Each finished disc bears an exclusive laser-etched traceability code linking casting data, production dates and inspection records, enabling full transparent production tracking for distributors for worry-free procurement.

The whole workshop operates in strict compliance with the ISO 14001 environmental management system. Closed-loop water treatment is adopted for coating processes, and centralized dust extraction systems are installed for machining procedures to ensure fully eco-friendly and compliant production.

The process for a full-case order is as follows: First, confirm the order details and delivery timeline, then arrange production, which typically takes 15 to 20 days for standard batches. Upon completion, all finished products undergo comprehensive inspection. During packaging, each unit is individually wrapped in OPP pearl foam, placed in five-layer corrugated boxes, secured within shipping containers, cleared through customs, and shipped to the destination port. The goods come with complete customs documentation-including commercial invoices, packing lists, and official certification reports-significantly streamlining procedures for clients. Each Buick Regal 90905240 rear brake disc comes with a warranty covering 80,000 km or 18 months. Normal usage issues such as excessive vibration, abnormal wear, or premature coating detachment are covered under warranty. Wholesale customers have dedicated claims channels: By submitting defect photos and corresponding batch numbers, they receive formal resolution plans within three business days, either receiving replacement parts or credit toward future payments. Each Buick Regal parts partner receives a dedicated account manager responsible for coordinating replenishment, after-sales services, and customization requests with faster response times.

Q1: Does this brake disc part number 90905240 fit all model years of the Buick New Excelle?
A: The rear brake disc 90905240 for Buick New Excelle is a direct replacement precisely compatible with the second-generation 1.5L Buick New Excelle sedans produced from 2013 to 2017. Its corresponding original OE number is 90905240, with mounting dimensions and performance parameters identical to the original factory parts for direct vehicle installation and replacement. For the earlier first-generation Buick Excelle 1.6L/1.8L models, we offer dedicated matching part numbers; you may contact customer service to obtain the full compatibility chart.

Q2: What is the minimum order quantity for rear brake disc 90905240 for Buick New Excelle?
A: For sample trial orders, the minimum order quantity of brake disc 90905240 for Buick New Excelle is 10 pairs (20 pieces). Official wholesale orders support consolidated LCL shipments and full-container purchases of 20ft / 40ft containers. If OEM services such as custom laser brand marking and exclusive packaging are required, the minimum order quantity can be negotiated based on specific demands with high flexibility.

Q3: What is the recommended torque for wheel hub bolts when installing rear brake disc 90905240 for Buick New Excelle?
A: When installing rear brake disc 90905240 for Buick New Excelle, tighten the wheel hub bolts in a diagonal cross sequence at a standard torque of 98Nm. This ensures uniform contact between the brake disc and wheel hub flange surface, preventing excessive runout and brake shudder caused by uneven stress in later use. It is also recommended to replace brake pads simultaneously when fitting new brake discs to guarantee optimal running-in performance and braking efficiency.

Mandatory Parts Traceability System Implemented in Southeast Asia: Southeast Asian countries including Thailand and Indonesia are rolling out a mandatory traceability system for automotive after-sales parts. Imported parts can only clear customs with scannable batch codes and official manufacturer certifications. The brake rotors for Buick New Excelle with part number 90905240 come factory-equipped with laser traceability codes, accompanied by test reports compliant with local standards. Importers do not need to affix extra labels or complete supplementary formalities to meet the new regulatory requirements.

Copper-Free Brake Systems Become a Global Trend: Automotive brake systems worldwide are shifting to low-copper and copper-free formulations. Changes in brake pad materials have raised new compatibility requirements for brake discs. The Buick New Excelle 90905240 brake discs have passed compatibility verification with low-copper brake pads, meeting all standards in terms of friction wear and braking smoothness, and are compatible with the upcoming global shift to upgraded brake material formulations.

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