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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 | 590D, 595D, 290D, 490, 495D, 444G, 344G, 344E, 490D, 493, 493D, 444E |
| Engine Number | 4045TT004, 4276TT018 |
| Compatible Model Brand | For JOHN DEERE |
| Compatible Engine Brand | For JOHN DEERE |
| original | 4228189, TH100684, AT122329 |
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Official answers about compatibility, package contents, specifications, installation, shipping, and warranty for 50AS Main Hydraulic Pump Coupling Assembly 4228189 AT122329 TH100684 for John Deere Excavator 290D 490 490D 495D 590D 595D Loader 344E 444E 344G 444G (SKU: ESY42148).
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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.
