Replacement for A3666A: Drop-In Alternatives We Stock
Looking for a replacement for the A3666A (A3666A - HP 4.3GB 7200RPM Ultra SCSI 80-Pin LVD Hot Swappable 3.5-inch Hard Drive)? Pro Disk Network ships HP 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 A3666A
| SKU | A3666A |
|---|---|
| Product | A3666A - HP 4.3GB 7200RPM Ultra SCSI 80-Pin LVD Hot Swappable 3.5-inch Hard Drive |
| Current price | $282.20 |
| Stock status | In Stock |
| Detail page | View A3666A › |
Drop-in replacements for A3666A
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.
A1658-69028 - HP 9.1GB 7200RPM Ultra-2 Wide SCSI Low Voltage Differential (LVD) 80-Pin Hot-Swappable 3.5-inch Hard Drive
SKU: A1658-69028
Price: $194.74
349530-001 - HP 4.3GB 7200RPM Ultra-2 Wide SCSI 80-Pin Hot-Swappable 3.5-inch Low Voltage Differential (LVD) Hard Drive
SKU: 349530-001
Price: $296.30
30-56069-03 - HP 9.1GB 7200RPM Ultra-2 Wide SCSI Hot-Swappable 80-Pin 3.5-inch Low Voltage Differential (LVD) Hard Drive
SKU: 30-56069-03
Price: $318.32
P1217-63001 - HP 9.1GB 7200RPM Ultra-160 SCSI 80-Pin LVD Hot-Swappable 3.5-inch Hard Drive
SKU: P1217-63001
Price: $419.43
344689-003 - HP 72.8GB 10000RPM Ultra-320 SCSI 80-Pin Low Voltage Differential (LVD) Hot-Swappable 3.5-inch Hard Drive
SKU: 344689-003
Price: $77.57
349537-001 - HP 9.1GB 10000RPM Ultra-2 Wide SCSI 80-Pin Hot-Swappable 3.5-inch Low Voltage Differential (LVD) Hard Drive
SKU: 349537-001
Price: $143.39
289098-002 - HP 36.4GB 10000RPM Ultra-320 SCSI 80-Pin Low Voltage Differential (LVD) Hot-Swappable 3.5-inch Hard Drive
SKU: 289098-002
Price: $143.39
HP A6272A#AKA 18.2GB 10000RPM Ultra-160 SCSI Hot-Swappable LVD 80-Pin 3.5-inch Hard Drive
SKU: A6272A-AKA
Price: $146.80
A6571A - HP 36.4GB 10000RPM Ultra-320 SCSI 80-Pin LVD Hot Swappable 3.5-inch Hard Drive with Tray
SKU: A6571A
Price: $155.79
142688-001 - HP 18.2GB 10000RPM Ultra Wide SCSI 80-Pin LVD Hot-Swappable 3.5-inch Hard Drive
SKU: 142688-001
Price: $182.37
A6541-69001 - HP 36.4GB 15000RPM Ultra-160 SCSI 80-Pin Hot-Swappable 3.5-inch Low Voltage Differential(LVD) Hard Drive
SKU: A6541-69001
Price: $194.74
A5282-60001 - HP 18.2GB 10000RPM Ultra-160 Wide SCSI Hot-swappable LVD 80-Pin 3.5-inch Hard Drive
SKU: A5282-60001
Price: $194.74
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.