Product Specifications
| Parameter | Details |
|---|
| Part Name | 12V Alternator |
| Part Number (OEM Reference) | A187873, A186125, AQ187873, Q187873, 3604448, 3604448R, 3604448RX, 3604480RX, 3604480, 3911248, 3920679, 39206791, J920679, 1103174, 1105170, 132000090065, 4029/70017, 700710688, 8003/00355, 402970017, 800300355 |
| Brand Compatibility | CASE |
| Machine Model Fitment | See “Compatible Models” table below |
| Condition | New Aftermarket |
| Warranty | 3–12 months against manufacturing defects |
| Packaging | Original box with protective foam and moisture barrier |
Compatible Models
| Brand | Applicable Models |
|---|
| CASE Dozer | 1150E, 1150H, 1150H_IND, 1550, 650, 650G, 650H, 650K, 750H, 750K, 850D, 850H, 850K |
| CASE Track Loader | 1155E, 855D |
| CASE Excavator | 170C, 220B |
| CASE Backhoe Loader | 480E, 480E LL, 480F, 480F LL, 580E, 580K, 580L, 580SE, 580SK, 580SL, 580SM, 590, 590L, 590SL, 590SM, 680K, 680L, 780C, 780D |
| CASE Skid Steer Loader | 1818, 1835, 1835B, 1835C, 1840, 1845C, 1896, 40XT, 450C, 455C, 60XT, 70XT, 75XT, 85XT, 90XT, 95XT |
| CASE Tractor | 2096, 4000, 5000, 5120, 5130, 5140, 5150, 5220, 5230, 5240, 5250, 550, 550E, 550G, 550H, 550H-IND, 6030, 8825, 8825HP, 8830, 8840, 8850, MX100, MX110, MX120, MX135 |
| CASE Trencher | 360, 560, 660, 760, 860, 960, DH4, DH4B, TF300 |
| CASE Wheel Loader | 570LXT, 570MXT, 621, 721, 821, 921, W11B |
| CASE Forklift | 584E, 585E, 585G, 586E, 586G, 588G, 686G, 686GXR, 688G |
| CASE Haytool | 5500, 4000, 5000, 8820, 8830 |
Tired of Alternator Failures on Your CASE 480E or 580E? Get the Right A187873 Alternator for Reliable 12V Power
Every hour your CASE backhoe loader sits idle due to a failed alternator costs hundreds — sometimes thousands — in lost productivity and rental penalties. OEM parts take 2–4 weeks to arrive, while counterfeit alternators often fail within 3 months, causing repeated downtime and costly secondary damage. Fleet managers and repair shops across North America, Africa, and Southeast Asia tell us they struggle to source one reliable 12V alternator that fits multiple CASE models without cross-referencing three different suppliers.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
This A187873 alternator is manufactured in ISO-certified facilities and undergoes full-load voltage regulation testing before shipment — ensuring stable 12V output under real operating conditions like digging cycles, loader bucket lifts, and trencher hydraulics. With 10 years of global export experience and over 10,000 SKUs in stock, XUNPO delivers direct-fit replacements for CASE excavators, loaders, and tractors — no re-engineering or field modifications required.
Where This Part Works
The A187873 alternator powers critical electrical systems on CASE machines deployed in high-dust construction sites, humid port environments, and abrasive quarry operations. It sustains consistent charging during extended idling, frequent start-stop cycles, and heavy accessory loads (e.g., GPS guidance, cab HVAC, lighting). In backhoe loaders like the 580E and 480E, stable voltage prevents ECU resets and solenoid misfires — making correct alternator selection essential for uptime in time-sensitive civil works and utility installations.
Engineering Details That Matter
Internal copper windings are rated for continuous 120°C operation, matching original CASE thermal specs. The rotor shaft is precision-ground to ±0.01mm runout tolerance to eliminate bearing wear and vibration-induced failure. Sealed ball bearings use high-temperature grease (NLGI #2, ISO-L-XBCGB2) rated for 10,000+ hours at 4,500 RPM. Voltage regulator ICs meet ISO 7637-2 pulse immunity standards to resist transient spikes from starter motor engagement. All housings are die-cast aluminum with black oxide finish — corrosion-resistant in salt-spray environments up to 96 hours.
The Real Cost of Wrong Parts
A $70 counterfeit alternator may save $40 upfront but typically fails within 1,200 operating hours — triggering an average $320 service call, $180 in labor, and $2,100 in project delay penalties per incident. By contrast, this A187873 alternator meets CASE’s published electrical specifications (12V nominal, 90A continuous output, ripple voltage <150mV peak-to-peak), carries full 3–12 month warranty, and extends service life to 5,000+ hours. Total cost of ownership drops by 37% over 3 years when factoring reliability, warranty coverage, and reduced technician dispatch frequency.
Why Customers Trust XUNPO
We only partner with ISO 9001-certified factories and inspect 100% of incoming alternator batches for winding resistance, brush length, and pulley concentricity. Every unit undergoes full-load performance testing at 12V/90A for 30 minutes prior to packaging. Our 3–12 month warranty covers manufacturing defects with no questions asked. With 10 years’ export history and shipments to 120+ countries, we’ve supported fleet operators from Dubai ports to Canadian mining sites. Our 20+ technical staff verify part compatibility using official CASE service manuals — response time under 2 hours. Over 10,000 commonly used parts, including A187873 alternators, are held in our Guangzhou warehouse for same-day dispatch.
Packaging & Shipping
- Individually boxed with molded EPE foam, anti-static lining, and sealed moisture barrier bag
- In-stock items ship within 2–5 working days after payment confirmation
- Flexible logistics: DHL/FedEx/UPS express, air freight, or sea freight — all with tracking
- Real-time shipment tracking provided from warehouse to destination port or door
- MOQ: 1 piece — designed for urgent maintenance needs and single-machine repairs
Get Your A187873 Alternator Now
Your CASE machine isn’t generating revenue while it waits. Send us your part number, exact model (e.g., CASE 580E or 170C), and quantity — we’ll email a competitive quote within 24 hours. First-time buyers can request a sample for functional validation before bulk order. With Guangzhou warehouse stock, your replacement arrives fast — so your job site stays on schedule.
Frequently Asked Questions
Q: Is this an original CASE part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket alternator, produced in ISO-certified factories and tested to match CASE A187873 electrical and mechanical specifications.
Q: How do I confirm this alternator fits my specific CASE machine?
A: Provide your machine model (e.g., CASE 480E) and serial number if available — our technical team verifies compatibility using official CASE documentation and responds within 2 hours.
Q: What is the warranty period?
A: 3–12 months against manufacturing defects. If failure occurs due to material or workmanship, we replace or refund unconditionally.
Q: What is the minimum order quantity?
A: 1 piece — no minimum. Ideal for emergency repairs, small workshops, or verification before larger orders.
Q: How soon will my order ship?
A: In-stock A187873 alternators ship within 2–5 working days. Express shipping options (DHL/FedEx) available upon request.
Q: Can I receive a sample before placing a bulk order?
A: Yes — first-time customers may request a sample for functional testing. Contact us via WhatsApp or email to arrange.
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
