Replacement for 40T4158: Drop-In Alternatives We Stock
Looking for a replacement for the 40T4158 (40T4158 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 Fully Buffered CL5 240-Pin DIMM 1.8V Memory)? 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 40T4158
| SKU | 40T4158 |
|---|---|
| Product | 40T4158 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 Fully Buffered CL5 240-Pin DIMM 1.8V Memory |
| Current price | $185.83 |
| Stock status | In Stock |
| Detail page | View 40T4158 › |
Drop-in replacements for 40T4158
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.
39M5791 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 Fully Buffered CL5 240-Pin DIMM 1.8V Memory
SKU: 39M5791
Price: $89.47
39M5983 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 Fully Buffered CL5 240-Pin DIMM 1.8V Memory
SKU: 39M5983
Price: $185.83
43X0614 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 Fully Buffered CL5 240-Pin DIMM 1.8V Memory
SKU: 43X0614
Price: $185.83
1924-7042 - IBM Chipkill 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully buffered CL5 240-Pin DIMM Dual Rank Memory
SKU: 1924-7042
Price: $185.83
39R5791 - IBM Chipkill 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully buffered CL5 240-Pin DIMM Dual Rank Memory
SKU: 39R5791
Price: $185.83
46C4720 - IBM Chipkill 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory
SKU: 46C4720
Price: $185.83
49C7419 - IBM Chipkill 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory
SKU: 49C7419
Price: $185.83
46C7419 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 Fully Buffered CL5 240-Pin DIMM 1.8V Memory
SKU: 46C7419
Price: $205.26
49Y3683 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM 1.55V Low Voltage Memory
SKU: 49Y3683
Price: $207.08
40V6628 - IBM 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC CL5 Fully Buffered 240-Pin DIMM Low Voltage (LV) Memory
SKU: 40V6628
Price: $207.08
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.