Replacement for WD6003FZBX: Drop-In Alternatives We Stock
Looking for a replacement for the WD6003FZBX (WD6003FZBX - Western Digital WD BLACK 6TB 7200RPM SATA 6Gb/s 256MB cache 3.5-inch Hard Drive)? Pro Disk Network ships Western Digital drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the WD6003FZBX
| SKU | WD6003FZBX |
|---|---|
| Product | WD6003FZBX - Western Digital WD BLACK 6TB 7200RPM SATA 6Gb/s 256MB cache 3.5-inch Hard Drive |
| Current price | $273.68 |
| Stock status | In Stock |
| Detail page | View WD6003FZBX › |
Drop-in replacements for WD6003FZBX
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
Western WD4006FZBX Western Digital WD4006FZBX Black 4TB 7200RPM 6Gb/s SATA 256MB Cache 3.5-Inch Hard Drive
SKU: WD4006FZBX
Price: $366.32
WD6002FZWX - Western Digital Black 6TB 7200RPM SATA 6Gb/s 128MB Cache 3.5-inch Hard Drive
SKU: WD6002FZWX
Price: $291.79
WD6001FZWX - Western Digital Black 6TB 7200RPM SATA 6Gb/s 128MB Cache 3.5-inch Hard Drive
SKU: WD6001FZWX
Price: $344.33
WD6004FZWX - Western Digital Black 6TB SATA 6Gb/s 7200RPM 128MB Cache 3.5-inch Gaming Hard Drive
SKU: WD6004FZWX
Price: $553.39
WD6001FZWX-00ZHUA0 - Western Digital Black 6TB 7200RPM SATA 6Gb/s 128MB Cache 3.5-inch Hard Drive
SKU: WD6001FZWX-00ZHUA0
Price: $750.25
Western WD64PURZ Western Digital WD64PURZ Purple 6TB 5400RPM 6Gb/s SATA 256MB Cache 3.5-Inch Hard Drive
SKU: WD64PURZ
Price: $284.21
Western WD60EFPX Western Digital WD60EFPX Red Plus 6TB 5400RPM 6Gb/s SATA 256MB Cache 3.5-Inch Hard Drive
SKU: WD60EFPX
Price: $517.89
WD4005FZBX - Western Digital Black 4TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch Hard Drive
SKU: WD4005FZBX
Price: $437.20
WD101FZBX - Western Digital Black 10TB SATA 6Gb/s 7200RPM 256MB Cache 3.5-inch Gaming Hard Drive
SKU: WD101FZBX
Price: $791.83
Western WD102FZBX Western Digital WD102FZBX Black 10TB 7200RPM 6Gb/s SATA 512MB Cache 3.5-Inch Hard Drive
SKU: WD102FZBX
Price: $517.89
WD6003FRYZ - Western Digital Gold Enterprise Class 6TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch Internal Hard Drive
SKU: WD6003FRYZ
Price: $567.12
WD6003FFBX - Western Digital Red Pro 6TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch Hard Drive
SKU: WD6003FFBX
Price: $584.21
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.