Rear Brake Disc BYD F6

BYD F6 Dedicated Rear Brake Disc (Brake Rotor)｜OE- EG3502118 – Exclusive Copy for Overseas Wholesale & Workshop Procurement
One-Sentence Positioning: This official product document covers the BYD F6 rear brake disc (Part No. OE- EG3502118), detailing vehicle compatibility, coating technology, workshop quality control, logistics & warranty, overseas procurement FAQs, and 2026 braking industry regulations-ready for direct deployment on Google standalone product pages.

IVehicle Compatibility & Product Overview
Launched in 2007, the BYD F6 is a mid-to-high-end sedan with a 2740mm wheelbase and curb weight of 1435–1500kg. Its original braking system features front ventilated discs / rear solid discs, standard ABS+EBD, and tire specifications of 205/65 R15 or 205/60 R16.

Specifically engineered for the F6's rear wheels, our BYD F6 rear brake disc (commonly referred to as brake disc / brake rotor by overseas buyers)-with exclusive part number OE- EG3502118-is precision-molded at a 1:1 scale based on the factory service manual specifications:
Standard disc thickness: 9.9–10.1mm; maximum refinishing limit: 8mm
Maximum runout repair limit: 0.1mm
Parallelism tolerance (max allowable thickness variation): ≤0.015mm
In short, this is a "ready-to-install, no lathe resurfacing required" rear brake disc. Each OE- EG3502118 unit features laser-etched MIN THK (Minimum Thickness) markings on the hub flange, fully complying with the mandatory requirement under China's national standard GB/T 34422-2017 for Brake Discs: "Minimum thickness markings shall be clear and permanent."

BYD F6 Dedicated Rear Brake Disc (Brake Rotor)｜OE- EG3502118｜Exclusive Copy for Overseas Wholesale & Workshop Procurement
One-Sentence Positioning: This document serves as the official product copy for the BYD F6 rear brake disc (Part No. OE- EG3502118), covering vehicle compatibility, coating technology, workshop quality control, logistics & warranty, overseas procurement FAQs, and the 2026 new brake industry regulations-ready for direct deployment on Google standalone product pages.

 Vehicle Compatibility & Product Overview
The BYD F6 is a mid-to-high-end sedan launched by BYD Auto in 2007, featuring a 2740mm wheelbase and a curb weight of 1435–1500kg. Its original braking system consists of front ventilated discs and rear solid discs, equipped with standard ABS+EBD and tire specifications of 205/65 R15 or 205/60 R16.
Specifically engineered for the rear wheels of the F6, our BYD F6 Rear Brake Disc-commonly referred to by overseas clients as "brake disc," "brake rotor," or "braking rotor"-carries the exclusive part number OE- EG3502118 and is precision-molded at a strict 1:1 ratio based on the OEM service manual dimensions:
Standard disc thickness: 9.9–10.1mm; Maximum refinishing limit: 8mm
Maximum runout repair limit: 0.1mm
Parallelism (maximum permissible thickness variation): ≤0.015mm
In short, this is a "ready-to-install, no lathe resurfacing required" rear brake disc. Every unit of OE- EG3502118 features laser-engraved MIN THK (minimum thickness) markings on the hat side, fully complying with the mandatory requirements of China's "Automotive Brake Discs" standard GB/T 34422-2017 regarding permanent and legible minimum thickness identification.
Why emphasize the part number EG3502118? For overseas workshops, cross-referencing the OE number is the core procurement step. Every mention of EG3502118 throughout this document acts as a distinct anchor point for both Google crawlers and buyers-ensuring this copy uniquely identifies this specific BYD F6 rear brake disc, setting it apart from competitors.

 Multi-Layer Anti-Corrosion Coating Process Breakdown
The BYD F6 Rear Brake Disc (OE- EG3502118) utilizes a four-layer composite coating structure, detailed from substrate outward as follows:
Layer 1｜Micro-Arc Oxidation Primer
Thickness: 8–12μm
Function: Seals microscopic pores in the cast iron substrate, providing a cathodic protection base.
Process: Water-based coating baked at approx. 90°C.
Layer 2｜Zinc-Aluminum Flake Intermediate Layer
Thickness: 10–15μm
Structure: Overlapping layers of zinc and aluminum flakes form a dense physical barrier, offering both cathodic protection and self-healing properties.
Performance Benchmark: Based on an eco-friendly, chromium-free Geomet-type system; withstands ≥240 hours of neutral salt spray testing without rust or blistering.
Layer 3｜Waterborne Acrylic Topcoat
Thickness: 20–30μm (total dry film thickness controlled within this range)
Performance: Salt spray resistance up to 280 hours (based on empirical data from similar waterborne brake disc coatings); film resists blistering and peeling.
Eco-Compliance: Water-based formulation with low VOC emissions, compliant with RoHS and REACH directives.
Layer 4｜Laser Marking Identification Layer
Applied post-curing using automated laser marking equipment to engrave OE- EG3502118, MIN THK, and production batch numbers.
Engraving depth: 0.2mm, ensuring permanent, legible markings compliant with GB/T 34422-2017.

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:

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:

🏭 Workshop Environment
The precision machining workshop is maintained at a constant temperature with an accuracy of ±1°C to prevent micro-deformation in cast iron components caused by thermal fluctuations.
Spanning 150,000 m², the facility integrates vertical molding and precision machining workshops and is equipped with Danish DISA molding lines and Doosan vertical CNC machining centers.
It features fully automated production lines for brake disc machining, coating, and anti-corrosion treatment, supported by a Manufacturing Execution System (MES) for real-time production management.

🔍 Inspection Stations (6 Critical Checkpoints)
Electromagnetic Induction Flaw Detection Station: Scans every component to identify microscopic defects.
Contact High-Precision Measurement Station: Detects tolerances within 0.001mm.
100% Dynamic Balancing Station: Corrects minor imbalances through precision trimming to ensure perfect disc equilibrium.
LVDT Inner/Outer Diameter Measurement Station: Achieves centering accuracy of ±2μm, repeatability of ±1μm, and a cycle time of ≤5 seconds per piece.
Salt Spray Sampling Test Station: Conducts batch sampling with a requirement of ≥240 hours of resistance.
Automatic Laser Marking Station: Engraves OE-EG3502118 codes and traceable data.

📋 Sampling Protocols & Certifications
Implements a full-process inspection system covering first-piece, self, mutual, final, and random checks.
Performs 100% outgoing quality control for critical dimensions such as inner and outer diameters.
Certified under international standards: IATF 16949, ISO 9001, ISO 14001, and ISO 45001.
Holds ECE R90 E1 product certification (a mandatory EU standard for replacement brake components).
Controls defect rates below 5,000 PPM (0.5%), significantly outperforming the industry average post-sale defect rate of 3%.

Q1: How can I confirm that OE-EG3502118 is truly compatible with my BYD F6?
A: All BYD F6 models (2007–2014, including the 2.0L BYD483QB and 2.4L 4G69 engines) are equipped with solid rear disc brakes and use tire specifications of 205/65 R15 or 205/60 R16. EG3502118 is molded to the original dimensions specified in the F6 service manual, with a disc thickness of 9.9–10.1mm, ensuring direct replacement. Before placing your order, please send us the last 8 digits of your VIN; we'll provide a written compatibility confirmation within 24 hours.

Q2: How is the disc's dynamic balance ensured?
A: Every EG3502118 unit undergoes 100% dynamic balancing inspection before leaving the factory. Slight machining is performed on unbalanced areas to achieve full balance across the disc surface, ensuring smooth, vibration-free operation at high speeds.

Q3: After replacing the rear brake discs on a BYD F6, the rear brakes are pulsating. Is it a problem with the discs?
A: Not necessarily. Based on F6 service cases, common causes of brake pull or pulsation include cracked brake caliper dust boots leading to piston rust and unbalanced braking force between left and right wheels. When installing EG3502118, be sure to clean the hub flange first, tighten to the specified torque, and pump the brake pedal several times after installation to confirm proper operation. If pulsation persists after correct installation, we will respond within 2 hours and provide replacement parts with the next shipment.

1. GB 21670-2025 Technical Requirements and Test Methods for Passenger Vehicle Braking Systems officially took effect on January 1, 2026.
This mandatory national standard, developed by the Ministry of Industry and Information Technology (MIIT), imposes stricter requirements on passenger vehicle braking systems. This means that brake discs entering the aftermarket must have traceable and verifiable minimum service thickness markings and material properties.

2. "Brake Disc Cost-Cutting" Becomes a Key Industry Focus in 2026
In April 2026, Li Xueyong, Executive Vice President of Chery Automobile, issued a public warning at the launch event for the Exeed EX7: "Many automakers today are making brake discs smaller and thinner." Due to battery weight, new energy vehicles (NEVs) are heavier, demanding greater disc thickness and superior thermal fade resistance. Under intense pricing pressure, some manufacturers have targeted brake discs for cost reduction-making the selection of compliant, full-thickness, high-quality aftermarket brake discs more critical than ever.

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