Replacement for ST318405LC: Drop-In Alternatives We Stock
Looking for a replacement for the ST318405LC (ST318405LC - Seagate Cheetah 36XL 18.4GB Ultra160 SCSI 10000RPM 4MB Cache Hot Swappable 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 ST318405LC
| SKU | ST318405LC |
|---|---|
| Product | ST318405LC - Seagate Cheetah 36XL 18.4GB Ultra160 SCSI 10000RPM 4MB Cache Hot Swappable 3.5-inch Hard Drive |
| Current price | $369.84 |
| Stock status | In Stock |
| Detail page | View ST318405LC › |
Drop-in replacements for ST318405LC
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.
ST39103LCV - Seagate Cheetah 18LP 9.1GB Wide Ultra2 SCSI 10000RPM 4MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: ST39103LCV
Price: $344.33
ST336705LC - Seagate Cheetah 36XL 36.7GB Ultra160 SCSI 10000RPM 4MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: ST336705LC
Price: $395.34
9E1005-031 - Seagate Cheetah 9.1GB 10000RPM Wide Ultra SCSI 68-Pin 512KB Cache Hot-Swappable (CE) 3.5-inch Hard Drive
SKU: 9E1005-031
Price: $165.79
9E1005-021 - Seagate Cheetah 9.1GB 10000RPM Wide Ultra SCSI 68-Pin 512KB Cache Hot-Swappable (CE) 3.5-inch Hard Drive
SKU: 9E1005-021
Price: $344.33
9E1005-022 - Seagate Cheetah 9.1GB 10000RPM Wide Ultra SCSI 68-Pin 512KB Cache Hot-Swappable (CE) 3.5-inch Hard Drive
SKU: 9E1005-022
Price: $395.34
ST136403FC - Seagate Cheetah 36 36.4GB Fibre Channel 10000RPM 1MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: ST136403FC
Price: $128.42
NFW4T - Dell / Seagate Cheetah NS.2 450GB 10000RPM SAS 6Gb/s 16MB Cache Hot-Swappable 3.5-inch Hard Drive
SKU: NFW4T
Price: $176.84
ST39103FC - Seagate Cheetah 9LP 9.1GB 10000RPM Fibre Channel 1MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: ST39103FC
Price: $282.57
0NFW4T - Dell / Seagate Cheetah NS.2 450GB 10000RPM SAS 6Gb/s 16MB Cache Hot-Swappable 3.5-inch Hard Drive
SKU: 0NFW4T
Price: $400.45
ST318304FCV - Seagate Cheetah 36LP 18.4GB Fibre Channel 10000RPM 16MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: ST318304FCV
Price: $417.58
9N90010431 - Seagate Cheetah 18XL 18.4GB 10000RPM Ultra160 SCSI 80-Pin 4MB Cache (CE) 3.5-inch Hard Drive
SKU: 9N90010431
Price: $82.42
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.