Replacement for 40W1158: Drop-In Alternatives We Stock
Looking for a replacement for the 40W1158 (40W1158 - IBM 1GB DDR3-1066MHz PC3-8500 ECC Unbuffered CL7 240-Pin DIMM Single Rank Memory Module)? 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 40W1158
| SKU | 40W1158 |
|---|---|
| Product | 40W1158 - IBM 1GB DDR3-1066MHz PC3-8500 ECC Unbuffered CL7 240-Pin DIMM Single Rank Memory Module |
| Current price | $92.93 |
| Stock status | In Stock |
| Detail page | View 40W1158 › |
Drop-in replacements for 40W1158
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.
43R2045 - IBM 1GB DDR3 DDR3-1066MHz PC3-8500 non-ECC Unbuffered CL7 204-Pin SoDimm Single Rank Memory Module
SKU: 43R2045
Price: $92.55
46R3322 - IBM 1GB DDR3-1066MHz PC3-8500 non-ECC Unbuffered CL2.5 240-Pin DIMM Memory Module
SKU: 46R3322
Price: $71.58
41R0770 - IBM / Lenovo 1GB DDR3-1066MHz PC3-8500 ECC Unbuffered CL7 240-Pin DIMM Single Rank Memory Module
SKU: 41R0770
Price: $71.58
43C1705 - IBM 1GB DDR3-1066MHz PC3-8500 ECC Unbuffered CL7 240-Pin DIMM 1.35V Low Voltage Memory Module
SKU: 43C1705
Price: $71.58
41U5251 - IBM / Lenovo 1GB DDR3-1066MHz PC3-8500 ECC Unbuffered CL7 240-Pin DIMM Single Rank Memory Module
SKU: 41U5251
Price: $92.93
53Y6195 - IBM Lenovo 1GB DDR3-1066MHz PC3-8500 ECC Unbuffered CL7 240-Pin DIMM Single Rank Memory Module for ThinkStation D20 (Type 4155)
SKU: 53Y6195
Price: $92.93
51J0503 - IBM 1GB DDR3-1066MHz PC3-8500 ECC Unbuffered CL7 240-Pin DIMM Single Rank Memory Module
SKU: 51J0503
Price: $92.93
41U6029 - IBM / Lenovo 1GB DDR3-1066MHz PC3-8500 non ECC Unbuffered CL7 240-Pin DIMM Memory Module
SKU: 41U6029
Price: $107.18
43R2046 - IBM 2GB DDR3 DDR3-1066MHz PC3-8500 non-ECC Unbuffered CL7 204-Pin SoDimm Single Rank Memory Module
SKU: 43R2046
Price: $109.00
7430032 - IBM 2GB DDR3-1066MHz PC3-8500 non-ECC Unbuffered CL7 240-Pin DIMM Memory Module
SKU: 7430032
Price: $76.13
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.