Comprehensive metallurgical specs, OEM cross-reference intelligence, and performance benchmarks for tier-1 distributors and global automotive repair networks.
The OEM 43210SH3N31 specification represents a critical benchmark in modern automotive braking architecture. Engineered to absorb intense kinetic loads while providing linear, jitter-free hydraulic clamp pressure, this caliper assembly is utilized across diverse passenger vehicle chassis. Achieving consistent coefficient of friction management requires exact tolerances during casting, CNC milling, and piston bore finishing.
Manufactured under strict adherence to IATF 16949 quality frameworks, the 43210SH3N31 component built by Wenzhou BIT Automobile Parts Co., Ltd. mitigates common friction failure modes such as fluid vapor lock, micro-fissuring under thermal hysteresis, and asymmetrical brake pad wear.
| Technical Parameter | Engineering Standard / Specification |
|---|---|
| Part Reference | OEM 43210SH3N31 |
| Body Material Grade | High-Density G3000 Gray Cast Iron / Aluminum Alloy Options |
| Piston Diameter | Precision-Ground 54.0 mm Nominal Bore |
| Hydraulic Fluid Passages | Ultra-clean CNC bored, burst pressure > 35 MPa |
| Surface Treatment | Cr6-Free Galvanized Electroplating / Anti-Corrosion E-Coating |
| Operating Temperature | -40°C to +180°C continuous operational endurance |
| OEM Cross-References | 43210-SH3-N31, 43210SH3N31, BIT-C43210 |
Analyzing real-world vehicle operational dynamic demands across varied climatic regions and terrain stress profiles.
High-frequency braking in heavy municipal traffic subjects the caliper piston seals and guide pins to continuous thermal cycling. The 43210SH3N31 features elastomeric seals designed to prevent micro-leaks even when thermal ambient housing reaches 140°C under prolonged traffic operation.
Negotiating extended downhill grades demands intense thermal dissipation to prevent fluid boiling. Our optimized G3000 iron grain density speeds up heat radiation away from the hydraulic brake fluid, preserving pedal feel during severe braking runs.
Exposure to de-icing road salts and marine humidity causes standard iron calipers to rust quickly, leading to stuck guide pins. BIT applies an electroplated zinc-nickel alloy finish that survives 720+ hours of continuous neutral salt spray testing (NSS).
From raw metallurgical casting to computer numerical control (CNC) machining and automated testing, quality is built into every step.
Once the raw caliper body is formed via high-precision sand casting or die casting, it undergoes fine machining on multi-axis Computer Numerical Control (CNC) stations. This critical stage guarantees accurate alignment between the caliper body, piston bores, and mounting brackets:
Leveraging Wenzhou's automotive manufacturing ecosystem to offer global buyers unparalleled quality, flexibility, and lead-time stability.
Founded in 1998, Wenzhou BIT Automobile Parts Co., Ltd. has matured from an engineering workshop into a fully integrated manufacturer. By handling core foundry sourcing, CNC milling, rubber seal molding, and cleanroom assembly in-house, we eliminate external bottleneck delays.
With more than 10,000 active part numbers spanning European, Asian, and American passenger vehicles, we cater to both major global importers needing full containers and regional distributors requiring mixed-part pallet shipments.
Lean manufacturing principles, combined with automated machining processes, allow us to offer tier-1 quality at a competitive direct-from-factory price point. Partnering with us reduces overall warranty claim expenses for distributors.
Explore our specialized engineering catalog built to support diverse global aftermarket needs.
Electrical Parking Brake Calipers featuring integrated, high-torque actuators built for modern electronic parking brake systems.
Hydraulic sliding and fixed calipers serving major European, Japanese, Korean, and American passenger vehicle applications.
Precision-cast mounting brackets available across 500+ reference numbers, ensuring accurate pad alignment and slide action.
Replacement electric parking brake motors (60+ reference numbers) offering seamless plug-and-play fitment with ECU controls.
Complete service kits with pistons, dust boots, bleed screws, and synthetic lubricants for professional rebuild workshops.
Comprehensive brake drum repair hardware, tension springs, and wear sensors engineered to original specifications.
Pioneering next-generation braking systems tailored for Electric Vehicles (EVs) and Autonomous Driving Platforms.
As mechanical linkages give way to electro-hydraulic actuators, BIT is developing low-drag caliper designs tailored for Brake-by-Wire units. Reduced residual drag torque improves EV range while enabling rapid response times under automated emergency braking (AEB).
Aligned with global environmental goals, our research lab focuses on copper-free friction pairings and lightweight aluminum matrix composite (AMC) housing alternatives to trim unsprung mass without sacrificing thermal performance.
Meeting rigorous international quality benchmarks to support seamless market entry across over 30 countries.
Our complete brake product line is engineered to comply with ECE R90 regulations, ensuring performance parities with OEM assemblies. Production processes strictly conform to IATF 16949 standards.
From North American automotive retail chains to European warehouse distributors and South American brake rebuilder networks, our components are trusted in varied driving environments worldwide.
All plating, rubber components, and surface coatings are fully compliant with EU REACH and RoHS environmental directives, ensuring safe handling and sustainable disposal.
Technical insights and procurement guidance for OEM 43210SH3N31 brake caliper sourcing.
The OEM 43210SH3N31 brake caliper features a 54.0 mm precision-finished piston bore designed for standard single-piston floating caliper mounts. It utilizes high-grade G3000 gray cast iron, matching original equipment mounting center-to-center distances, thread pitches (M10x1.0 fluid inlet), and bleeder screw locations for seamless drop-in replacement.
We utilize high-grade EPDM (Ethylene Propylene Diene Monomer) square seal rings that maintain elasticity down to -40°C and resist continuous thermal loads up to +180°C. Each finished caliper undergoes a 100% automated dual-stage pneumatic leak test (both high-pressure fluid simulation and low-pressure air vacuum testing) before packaging.
Yes. We support custom branding, including laser-etched logo part numbers on caliper bodies, customized barcode labeling, inner unit box artwork, and palletized bulk packaging tailored for large aftermarket importers and brands.
We offer standard trivalent chromium electro-galvanizing (silver/yellow finish), eco-friendly black E-coating, and high-performance Zinc-Nickel plating that surpasses 720 hours in neutral salt spray (NSS) chamber testing, ideal for winter de-icing salt environments.
For standard catalog stock and raw casting inventories, regular container lead times range from 30 to 45 days. For rush re-orders or mixed container consolidated shipments, our agile scheduling allows for shorter turnaround windows.
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