PRO Program members can receive tiered savings on this line—up to 20% more off for qualifying accounts.
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Built to support repair shops, fleets, and equipment owners with dependable parts sourcing and responsive service.
Qualifying new parts include 1-year coverage. Review the Warranty Policy section for coverage details, claim steps, and exclusions.
Eligible orders may qualify for returns within 90 days. See the Easy Return Policy section for conditions and next steps.
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| Model Number | 480E, 480E LL, 480F, 480F LL, 580E, 580K, 580L, 580SE, 580SL, 590, 590L, 590SL, 650, 650G, 650H, 650K, 750H, 750K, 850K, 1150E, 1155E, 1550, 1150H, 680L, 780C, 780D, 850D, 855D, 580SK, 580M, 580SM, 590SM, 1835, 850H, 1150H_IND, 680K, 170C, 1818, 220B |
| Engine Number | 4390, 4390T, 4391, 4391T, 4391TA, 6590, 6590T, 6591T, 6591TA, 6830T, 6830TA, PX110, PX140, PX170, 6831T, 6831TA, 6590TA, PX190, PX215, PX240, PX85, PX70 |
| Compatible Model Brand | For CASE |
| Compatible Engine Brand | Other Engine Brand |
| original | A186125, A187873, AQ187873, Q187873, 3604448, 3604448R, 3604448RX, 3604480RX, 3604480, 3911248, 3920679, 39206791, J920679, 1103174, 1105170, 132000090065, 4029/70017, 700710688, 8003/00355, 402970017, 800300355 |
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Official answers about compatibility, package contents, specifications, installation, shipping, and warranty for 12V Alternator A187873 for CASE 4391 4390 6590 6591T Engine 170C 220B 480E 580E 590L 584E 585E 2096 4000 5000 5120 (SKU: ESY12188).
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Every new aftermarket part from us includes a 1-year warranty. Full terms, coverage, and how to make a claim: Warranty Assistance.
We ship to customers around the world. Orders are sent with our standard courier service—trackable, dependable, and easy to work with. On this product page, use Get Estimate under the price to see shipping cost and estimated delivery for your location. For destinations, rules, and full details, read our Shipping Policy Details.
We want you to be confident in your order. If you are not satisfied, you may qualify for a return or refund within 90 days, subject to conditions. See our Easy Return Policy for eligibility, steps, and exceptions.
