Replacement for 45K6403: Drop-In Alternatives We Stock
Looking for a replacement for the 45K6403 (45K6403 - IBM Lenovo CPU Fan for ThinkCentre M90z)? Pro Disk Network ships IBM 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 45K6403
| SKU | 45K6403 |
|---|---|
| Product | 45K6403 - IBM Lenovo CPU Fan for ThinkCentre M90z |
| Current price | $126.68 |
| Stock status | In Stock |
| Detail page | View 45K6403 › |
Drop-in replacements for 45K6403
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.
45K6406 - IBM Lenovo System Fan for ThinkCentre M90z (type 0800 3429 and 5248)
SKU: 45K6406
Price: $73.68
43C3505 - IBM Lenovo System Board Intel 946GZ LGA775 for Lenovo ThinkCentre A55/M55E
SKU: 43C3505
Price: $369.84
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.