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3701020A-E01
HongPro
3701020A-E01
Product Introduction
3701020A-E01 Energy-Saving Heat-Resistant Certified Car Alternator for Great Wall Motor
Designed for modern passenger vehicle electrical systems, this alternator delivers reliable power generation to support battery charging and onboard electronics operation. Certified to ISO 4130 (automotive electrical component standards), it features a high-efficiency stator and optimized voltage regulator, maintaining stable output of 13.8-14.8V across engine speeds of 600-10,000 RPM. With a rated output of 120A, it ensures consistent performance under varying loads.
Built for durability, it incorporates a heavy-duty alloy housing and Class H insulation (180°C thermal resistance), tested to exceed 3,000 hours of continuous operation in extreme temperatures (-40°C to +125°C). Field-proven in global aftermarket applications, its precision engineering minimizes vibration wear, reducing failure rates by 25% compared to industry averages (based on 5-year independent field data). Ideal for vehicles requiring robust, long-term electrical system support.
Product Advantage
Leveraging advanced synchronous rectifier technology, our alternator achieves an industry-leading 98% efficiency rate (vs. 95% industry average), minimizing energy loss during power conversion. Paired with a microprocessor-controlled voltage regulator, it maintains ultra-stable output of 13.8-14.8V across 600-10,000 RPM, ensuring sensitive electronics (e.g., ECUs, infotainment systems) operate without interference. This precision reduces battery drain by 15% in stop-start scenarios (validated by SGS lab tests).
Crafted with a corrosion-resistant alloy housing and Class H insulation (180°C thermal tolerance), it withstands extreme conditions from -40°C to +125°C. Rigorous 3,000-hour thermal cycling tests (conducted by TÜV Rheinland) confirm minimal performance degradation, while the optimized fan design enhances heat dissipation by 20%. Field data shows a 25% lower failure rate than OEM equivalents over 5 years in heavy-duty use.
Engineered with a low-rpm start-up capability (600 RPM), it delivers 90% of rated output (120A) at idle—critical for modern vehicles with high-power accessories (e.g., LED lights, USB chargers). Its dynamic load-balancing algorithm adjusts current output in <0.1 seconds to prevent voltage spikes, extending battery life by 30% (based on 10,000+ hours of aftermarket fleet testing).
Designed to match global aftermarket standards, it features universal mounting brackets and plug-and-play connectors compatible with 90% of light-duty vehicle electrical architectures. Third-party validation (by ASE-certified technicians) confirms 100% fitment accuracy across 50+ mainstream models, reducing installation errors and after-sales support costs by 40%.
Technical Parameters
| Parameter Category | Parameter Name | Specification/Value | Technical Description & Validation |
| Electrical Performance | Rated Voltage | 13.8–14.8V (DC) | Stable output across engine speeds (600–10,000 RPM); microprocessor-controlled voltage regulator minimizes fluctuations (<±0.2V). Certified by SGS Labs. |
| Rated Current | 120A (Continuous) | Delivers 90% of rated output (108A) at 600 RPM (idle), critical for low-speed accessory loads (e.g., ECU, infotainment). Tested under ISO 16750-2 load cycles. | |
| Efficiency | 98% (Peak) | Advanced synchronous rectifier technology reduces energy loss by 3% vs. industry average (95%). Verified via dynamometer testing at 2,000 RPM. | |
| Mechanical Design | Insulation Class | Class H (180°C Thermal Resistance) | High-temperature resistant materials prevent winding degradation; exceeds OEM requirements for extreme underhood conditions. TÜV Rheinland thermal stress test passed. |
| Housing Material | Corrosion-Resistant Alloy (Al-Si) | Lightweight yet durable; 30% higher tensile strength than standard steel housings. Salt-spray tested for 500 hours (ASTM B117) with no surface corrosion. | |
| Weight | 4.2kg ±0.1kg | Optimized for weight-to-power ratio; 15% lighter than conventional alternators without compromising durability. | |
| Environmental Adaptability | Operating Temperature Range | -40°C to +125°C | Withstands extreme climates; thermal management system maintains performance in -40°C cold starts and +125°C under-hood heat. Validated by Arctic circle field tests (6 months). |
| Protection Rating | IP67 | Sealed against dust, water, and chemical exposure (e.g., road salts). Submerged in 1m water for 30 minutes (IP67 standard) with no internal moisture ingress. | |
| Certifications & Compliance | Industry Standards Met | ISO 4130, SAE J563, IEC 60034-1 | Compliant with global automotive electrical component norms; certified for aftermarket replacement in 50+ countries. |
Product Uses
Here are specific application scenarios of car alternator:
Ideal for daily urban use with frequent idling and low-speed maneuvers, this alternator excels in low-RPM (600 RPM) power delivery, maintaining 90% of rated output (108A) to keep batteries charged even during extended traffic jams. Its microprocessor-controlled voltage regulator limits fluctuations to <±0.2V, reducing battery drain by 15% in stop-start scenarios (SGS-tested). This ensures reliable starting and prevents electrical system failures in high-cycle urban environments.
Designed for sustained high-performance, it delivers stable 13.8-14.8V output across 600-10,000 RPM, supporting energy-intensive accessories like GPS, LED lights, and climate control during highway drives. The optimized fan and Class H insulation reduce heat buildup by 20% (TÜV-validated), ensuring 3,000+ hours of continuous operation without performance drop—critical for cross-country or tour bus applications.
With an operating range of -40°C to +125°C and IP67 protection, it thrives in harsh conditions: withstands Arctic cold starts (-40°C) and desert under-hood heat (+125°C) without freezing or overheating. Salt-spray tested for 500 hours (ASTM B117), its corrosion-resistant alloy housing resists rust in coastal or dusty areas, making it a trusted choice for fleets in regions with extreme weather.
Modern vehicles with advanced electronics (e.g., infotainment, ADAS sensors, USB-C chargers) demand stable power. This alternator’s dynamic load-balancing technology adjusts output in <0.1 seconds to prevent voltage spikes, extending battery life by 30% (based on 10,000+ hours of aftermarket fleet testing). It avoids costly electrical damage, ensuring seamless integration with high-draw accessories.
For delivery vans, taxis, or rental fleets with daily 10+ hour usage, its 25% lower 5-year failure rate (vs. industry averages, per independent field data) reduces downtime and maintenance costs. The heavy-duty alloy housing and over 100,000-hour accelerated life testing ensure long-term reliability, making it a cost-effective choice for businesses prioritizing operational continuity.
Product Operate Guide
Pre-Installation Check: Verify terminal compatibility (universal 4-pin connector) and housing seal integrity (IP67-rated). Clean mounting surfaces to avoid debris interference—tested to prevent 95% of installation errors (ASE technician feedback).
Connection Protocol: Align positive (+) and negative (-) terminals with vehicle wiring harness; tighten bolts to 12-15 N·m (validated via torque wrench tests). Ensure cooling fan clearance (≥2cm) for optimal heat dissipation.
Post-Installation Test: Start the engine, use a multimeter to confirm stable 13.8-14.8V output at idle (600 RPM). Fluctuations >±0.2V indicate loose connections—refer to our troubleshooting guide.
Daily Maintenance: Inspect wiring harness monthly for wear; clean external debris from air vents quarterly to maintain cooling efficiency (prolongs lifespan by 20%, per TÜV field data).
