Replacement for 1ER166-901: Drop-In Alternatives We Stock
Looking for a replacement for the 1ER166-901 (1ER166-901 - Seagate 3TB 7200RPM SATA 6Gb/s 64MB Cache (RoHS) 3.5-inch Hard Drive)? Pro Disk Network ships Seagate 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 1ER166-901
| SKU | 1ER166-901 |
|---|---|
| Product | 1ER166-901 - Seagate 3TB 7200RPM SATA 6Gb/s 64MB Cache (RoHS) 3.5-inch Hard Drive |
| Current price | $625.50 |
| Stock status | In Stock |
| Detail page | View 1ER166-901 › |
Drop-in replacements for 1ER166-901
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.
1ET166-901 - Seagate 3TB 5900RPM SATA 6Gb/s 64MB Cache (CE) 3.5-inch Hard Drive
SKU: 1ET166-901
Price: $458.74
1ER162-901 - Seagate 1TB 7200RPM SATA 6Gb/s 64MB Cache (RoHS) 512e 3.5-inch Hard Drive
SKU: 1ER162-901
Price: $402.12
1ER164-901 - Seagate 2TB 7200RPM SATA 6Gb/s 64MB Cache (RoHS) 3.5-inch Hard Drive
SKU: 1ER164-901
Price: $529.58
1EJ164-901 - Seagate 1TB 5400RPM SATA 6Gb/s 64MB Cache 8GB Multi-Level-Cell NAND 2.5-inch Hybrid Hard Drive
SKU: 1EJ164-901
Price: $194.12
1ET164-901 - Seagate 2TB 5900RPM SATA 6Gb/s 64MB Cache (CE) 3.5-inch Hard Drive
SKU: 1ET164-901
Price: $302.36
1EJ16G-901 - Seagate 750GB 5400RPM Multi-Level-Cell SATA 6Gb/s 64MB Cache (512) 2.5-inch Hard Drive
SKU: 1EJ16G-901
Price: $392.99
1ET162-901 - Seagate 1TB 5900RPM SATA 6Gb/s 64MB Cache (CE) 3.5-inch Hard Drive
SKU: 1ET162-901
Price: $402.12
1EJ162-901 - Seagate Laptop Thin 500GB 5400RPM SATA 6Gb/s 64MB Cache 2.5-inch Hard Drive
SKU: 1EJ162-901
Price: $480.21
1ER14C-901 - Seagate 500GB 7200RPM SATA 6Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 1ER14C-901
Price: $302.36
ST3300650SS - Seagate Seagate Constellation ES.2 3TB 7200RPM SAS 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: ST3300650SS
Price: $165.79
ST3000DM001 - Seagate BarraCuda 3TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: ST3000DM001
Price: $136.84
ST33000650NS - Seagate Constellation ES.2 3TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: ST33000650NS
Price: $138.95
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.