Explore our catalog of certified OE-replacement brake calipers, engineering-approved configurations, and customized systems.
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Wenzhou BIT Automobile Parts Co., Ltd.
Founded in 1998 as a small workshop producing automotive components, our company has grown into a fully integrated manufacturing and trading enterprise specializing in high-quality braking systems. Over the past two decades, we have expanded our product range, enhanced our production capabilities, and established a strong global presence. Today, we are a trusted supplier of brake calipers, repair kits, motors, caliper brackets, brake drum repair kits, and more, serving customers in multiple international markets.
We manage a comprehensive portfolio of brake replacement products engineered strictly to match original equipment specifications.
A deep dive into the material structure, dimensional tolerances, and high-performance casting parameters of the 43230-SR3-G01 Rear Brake Caliper.
The OEM 43230-SR3-G01 refers to a precision-engineered rear-right caliper assembly predominantly utilized in Japanese passenger vehicles, notably popular retro Honda chassis like the Civic, CR-X, and Integra lines. As automotive safety standards rise, remanufacturing or crafting this specific component demands strict compliance with mechanical metallurgy. Under extreme braking deceleration, rear calipers must balance hydraulic pressure distribution to avoid premature rear-wheel lockup or electronic brake distribution errors.
Wenzhou BIT manufactures the 43230-SR3-G01 utilizing premium quality cast iron meeting the QT450-10 ductile iron standards. This ensures high structural tensile strength (exceeding 450 MPa) and an elongation factor over 10%, effectively preventing housing fracture or deflection under sudden hydraulic spikes. All seal chambers are honed down to a surface finish roughness parameter of Ra 0.2 to 0.4 microns to preserve EPDM rubber seal integrity and prevent pressure degradation over time.
| Technical Characteristic | OEM Specification Standard (43230-SR3-G01) | BIT Factory Quality Control Threshold |
|---|---|---|
| Piston Diameter | 30.00 mm or 34.00 mm (depending on vehicle variance) | ±0.02 mm (Micro-polished finish) |
| Casting Material | Ductile Cast Iron / Gray Iron Standard | High-grade QT450-10 with nodularity > 90% |
| Hydraulic Fluid Inlet Thread | M10 x 1.0 | 100% thread gauge verified |
| Surface Coating | Zinc Plating / Anti-rust oil treatment | Trivalent Zinc Coating > 12 microns (72h+ Salt Spray tested) |
| EPDM Seals Working Temp | -40°C to 120°C | -45°C to 150°C (OEM-grade rubber compounds) |
| High Pressure Leak Testing | Standard fluid dynamic threshold | 100% dry pneumatic test at 10-15 Bar; hydraulic test at 150 Bar |
In our 27+ years of manufacturing experience, we have determined that micro-imperfections on the caliper piston body are the number one cause of premature brake fluid leaks in the aftermarket. By investing in multi-stage CNC polishing machines, Wenzhou BIT guarantees a mirror-like piston surface (Ra < 0.2 μm) that reduces friction, prevents seal degradation, and increases the average caliper operational lifespan by up to 40% compared to standard aftermarket alternatives.
Our production facility utilizes automated precision casting followed by high-tech CNC vertical and horizontal machining centers to secure high yield and strict component tolerances.
Once the raw caliper body is formed, it undergoes precision machining on Computer Numerical Control (CNC) machines. This critical stage involves:
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Our story began in 1998 with a focus on manufacturing precision brake components for the domestic aftermarket. By 2008, we took a significant step forward by establishing our own brake caliper factory, enabling us to provide high quality products to Chinese trading companies. A decade later, in 2018, we founded our international trading company, marking our official entry into the global market. This strategic move allowed us to directly engage with overseas customers, offering tailored solutions for diverse automotive needs.
Leveraging Wenzhou's mature automotive supply cluster to deliver unparalleled cost efficiencies, manufacturing speed, and technological superiority.
Wenzhou is recognized globally as China's absolute premier production hub for automotive components. By sourcing raw materials, custom sealing kits, and surface treatments locally, we minimize internal logistics overhead and guarantee competitive ex-works prices.
Our tooling workshop designs and implements casting patterns and fixture systems internally. This fast-tracks product development for newly requested automotive parts, dropping tooling fabrication times to as little as 30 to 45 days.
With multi-axis CNC machines and automated optical measurement verification equipment, human error is significantly mitigated, yielding high consistency over large production runs of 100,000+ pieces yearly.
Consistently bridging the gap between factory-direct cost advantages and Tier-1 quality standards.
With over 10,000 part numbers in our catalog, we cover a wide range of applications for passenger cars. Our core products include:
Our products are now sold in over 30 countries, with key markets including:
Quality control is at the heart of our operations. Our state-of-the-art manufacturing facilities employ advanced machinery and strict testing protocols to ensure every component meets the highest performance standards. Additionally, we work closely with clients to develop custom solutions, adapting to regional requirements and industry trends.
Unlocking complex trade compliance barriers and local support networks to streamline parts procurement for Tier-1 distributors.
For global enterprises sourcing automotive components, quality compliance is a non-negotiable metric. Our manufacturing operations strictly adhere to the internationally recognized IATF 16949 quality management system for automotive industries. Every caliper shipped conforms to specific regional directives, including the European Union's E-Mark (ECE R90) certification standards for braking components, and the REACH regulation regarding chemical substances in elastomer boots.
To streamline import customs clearance and mitigate duty risks, we provide clear origin certification documentation, comprehensive material declaration sheets, and compliance verification certificates. This ensures your legal procurement processes are completely insulated from administrative delays.
We realize that local technical support is vital for large B2B buyers. Wenzhou BIT partners with regional automotive distributors and localized logistics hubs in key overseas markets. This allows us to provide rapid troubleshooting, simple return-and-replace workflows, and on-site engineering consultations when resolving custom fitment inquiries.
By utilizing flexible sea freight container scheduling, air freight parcel delivery for urgent requirements, and localized inventory backup support, we shorten standard lead times to keep your supply chain highly agile and robust against market fluctuations.
Analyzing how vehicle electrification, environmental regulations, and automation shape the future of aftermarket supply lines.
Modern vehicles are migrating from manual handbrakes to EPB actuators. We are actively converting our production capability to support integrated EPB motor housings, ensuring long-term catalog relevance.
To maximize electric vehicle driving range, cutting unsprung mass is crucial. Researching and producing high-strength aluminum alloy calipers is a core engineering initiative in our design labs.
With international bans on hexavalent chromium, Wenzhou BIT relies entirely on eco-safe, chromate-free plating. These coatings deliver superb anti-corrosion metrics without environmental damage.
We are shifting toward end-to-end digital tracking. Each caliper casting receives a unique QR mark, enabling raw materials traceability and precise quality recall tracking down to the minute of manufacture.
How our brake calipers are engineered to perform under extreme climatic conditions and regional road challenges.
Road de-icing chemicals cause severe metal oxidation. Our proprietary zinc-iron alloy plating provides outstanding resistance against chemical rust, protecting caliper guide pins and ensuring smooth piston travel throughout harsh winters.
Frequent braking in hot climates spikes caliper heat, degrading typical hydraulic seals. Wenzhou BIT uses advanced high-thermal EPDM boots, guaranteeing continuous seal elasticity even during persistent operating temps over 120°C.
Commercial delivery vans demand steady braking cycles under high load stress. We optimize bracket stiffness and reinforcement webs on our heavy-use caliper lines to minimize structure flexing, preventing uneven brake pad wear.
Technical advice, order handling details, and engineering queries from buyers regarding OEM 43230-SR3-G01.
OEM part number 43230-SR3-G01 represents the rear-right caliper configuration for specific Honda passenger models. It commonly interchanges with various part codes, including 43230-SR3-G02, 43230-SR3-G00, 43230-SR3-A01, as well as aftermarket catalog numbers such as 19-B1392 (Cardone) and F 28 071 (Brembo). We verify exact fitment using original VIN database cross-referencing.
We execute 100% pneumatic testing for air tightness under low pressure, and hydraulic pressure testing reaching up to 150 Bar on a random batch audit program. We also run run-out examinations on the bracket surfaces, thread accuracy gauge tests, and salt spray test cycles to guarantee anti-rust plating performance meets the 72-hour standard.
Yes. We offer fully integrated OEM custom package solutions. This includes custom laser engraving of part numbers on the caliper housing, private brand printed inner boxes, barcode tracking labels, and moisture-sealed master carton boxes suitable for long-distance maritime shipping.
For items already in stock, products can be packed and dispatched in 7 to 15 days. For custom production runs or newly cast product series, our manufacturing cycle typically requires 45 to 60 days. This includes raw casting preparation, precision milling, electroplating, assembly, and final testing.
Yes. Every complete caliper assembly we ship includes high-grade EPDM piston seals, dust boots, guide pin boots, bleeder screws, and necessary installation grease. We also offer standalone caliper housings and brackets if you prefer to purchase them separately.
As we move forward, our mission remains clear: to deliver superior braking solutions while expanding our global footprint. By combining decades of expertise with a customer-centric approach, we aim to strengthen our position as a leading supplier in the automotive aftermarket.
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BIT Automobile
