Product Specifications
| Parameter | Details |
|---|
| Part Name | 12V 20A Alternator |
| Part Number (OEM Reference) | AM877557, MIA10338, SE501822, SE501843, AM879144 |
| Brand Compatibility | Yanmar, John Deere, Kawasaki |
| Machine Model Fitment | Yanmar 3TNE74, 3TNM72, 3TNV76; John Deere 2210, 2320, 2520, 4010, 4110, 4115, 445, 770, F915, X495 and more — see full list below |
| Condition | New Aftermarket |
| Warranty | 6-month standard warranty against manufacturing defects |
| Packaging | Original sealed box with anti-static foam and branded carton |
Compatible Models
| Brand | Applicable Models |
|---|
| Yanmar | 3TNE68C, 3TNE74, 3TNE84A, 3TNM72, 3TNV70, 3TNV76, 3TNV82A, FD620D |
| John Deere | 1070, 2210, 2243, 2305, 2320, 2520, 4010, 4100, 4110, 4115, 445, 770, F915, X495, 2500, 2500A, 2500E, 2550, 2750, 3225B, 415, 425, 670, 790, 870, 970, 990 |
| Kawasaki | FD671D, FD671D-KS02, FD711D, FD750D, FD750D-JS12, FD750D-KS12, FH641D |
Tired of Alternator Failures on Yanmar 3TNE74 and John Deere 2210/2320 Machines?
Every hour your excavator or compact utility tractor sits idle due to a failed alternator costs hundreds in lost productivity — especially on tight municipal or agricultural deadlines. OEM replacements take weeks to arrive and cost up to 45% more. Worse, non-certified aftermarket units often deliver inconsistent voltage output, damaging ECUs and causing repeated battery drain. We’ve seen this firsthand across 120+ countries where equipment uptime is non-negotiable.
OEM-Equivalent Quality, Ready to Ship
This AM877557 alternator is engineered to match original performance specs: stable 12V ±0.5V output at 20A load, tested under simulated engine RPM ranges (1,200–3,600 rpm). Built by ISO 9001-certified factories with 10+ years’ experience supplying global distributors, it’s rigorously verified before shipment — including no-load voltage regulation, brush wear resistance, and thermal cycling tests. Used daily in field repairs for Yanmar-powered skid-steers and John Deere compact tractors, it delivers reliable starting and consistent charging without ECU interference.
Where This Part Works
This alternator operates reliably in high-vibration, dust-heavy environments — from rice paddy tillage with John Deere 2210 tractors in Southeast Asia, to quarry support vehicles powered by Yanmar 3TNE74 engines in Africa. It sustains continuous duty cycles in ambient temperatures from -20°C to +85°C, maintaining stable output even during extended idling or frequent stop-start operation common in port material handlers and demolition site support units. A direct-fit replacement alternator for Yanmar 3TNE74 ensures uninterrupted power supply critical for hydraulic control systems and instrument clusters.
Engineering Details That Matter
The rotor windings use Class H insulation (180°C rated), exceeding OEM spec for thermal endurance during prolonged high-load operation. Precision-machined aluminum housing ensures exact mounting alignment with original bracket holes — eliminating vibration-induced bearing wear. Internal rectifier diodes are rated at 30A surge capacity (50% above nominal 20A), preventing failure during cold starts. The voltage regulator is calibrated to 13.8–14.4V range, matching Yanmar and John Deere ECM communication thresholds and preventing overcharging that degrades AGM batteries. All internal bearings are double-sealed and pre-greased for life — no maintenance required under normal service intervals.
The Real Cost of Wrong Parts
A $25 counterfeit alternator may save upfront, but its unstable output causes cascading failures: premature battery replacement ($120–$200), ECU reprogramming ($180+ labor), and unplanned downtime averaging $1,200/day for a rental fleet operator. Industry data shows non-compliant units fail 1.7× faster than ISO-verified equivalents. Our AM877557 alternator meets ISO 8528-3 generator standards and undergoes full functional validation per SAE J1171. Total cost of ownership drops when you factor in 6-month warranty coverage, zero rework labor, and guaranteed compatibility — not just the unit price. Replacement alternator for Yanmar 3TNE74 isn’t a commodity — it’s a system-critical reliability component.
Why Customers Trust XUNPO
We partner exclusively with ISO 9001-certified manufacturers and perform incoming batch inspection on every shipment. Each AM877557 unit undergoes 100% functional testing: no-load voltage, regulated output stability, ripple voltage (<3%), and thermal rise verification. We offer 6-month warranty covering all manufacturing defects — no questions asked. With 10 years of export experience serving clients in 120+ countries, our team includes 20+ certified mechanical engineers and parts specialists who verify fitment within 2 hours. Our Guangzhou warehouse holds over 10,000 SKUs, including this alternator in stock — ready for same-day dispatch.
Packaging & Shipping
- Individually packed in custom-molded anti-static foam inside rigid branded corrugated box
- In-stock items ship within 2–5 working days after order confirmation
- Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — selected per customer requirement
- Real-time tracking number provided upon dispatch, updated until final delivery
- MOQ is 1 piece — designed for urgent field repairs and small-fleet operators
Get Your AM877557 Alternator Now
Your machine shouldn’t wait. Send us your part number (AM877557 or equivalent), exact machine model (e.g., John Deere 2320 or Yanmar 3TNE74), and required quantity — we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample for technical validation. Every day delayed is revenue lost; our Guangzhou warehouse keeps this alternator ready for immediate dispatch.
Frequently Asked Questions
Q: Is this an original OEM part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket alternator, manufactured in ISO 9001-certified facilities to meet or exceed original performance specifications.
Q: How do I confirm if AM877557 fits my specific machine?
A: Provide your machine model and serial number (or engine tag photo), and our technical team will verify compatibility within 2 hours.
Q: What is the warranty period?
A: 6 months from date of delivery against manufacturing defects — full replacement or refund with proof of failure.
Q: What is the minimum order quantity?
A: 1 piece — no bulk requirement. Ideal for urgent repair needs and small-fleet operators.
Q: How fast can I receive the alternator after ordering?
A: In-stock items ship within 2–5 working days. Express shipping options available for urgent deliveries.
Q: Can I request a sample before placing a bulk order?
A: Yes — first-time customers may request a sample for physical and functional testing prior to bulk purchase.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com
