Replacement for FWLF163121: Drop-In Alternatives We Stock
Looking for a replacement for the FWLF163121 (FWLF163121 - Finisar 2.70Gbps OC-48 DWDM Single-Mode Fibre 80km 1560.61nm LC Connector SFP Transceiver Module)? Pro Disk Network ships 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 FWLF163121
| SKU | FWLF163121 |
|---|---|
| Product | FWLF163121 - Finisar 2.70Gbps OC-48 DWDM Single-Mode Fibre 80km 1560.61nm LC Connector SFP Transceiver Module |
| Current price | $1,249.24 |
| Stock status | In Stock |
| Detail page | View FWLF163121 › |
Drop-in replacements for FWLF163121
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.
FWLF1634RL48 - Finisar 4.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1538.98nm Duplex LC Connector SFP Transceiver Module
SKU: FWLF1634RL48
Price: $1,826.84
FWLF1634RL36 - Finisar 4.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1548.51nm Duplex LC Connector SFP Transceiver Module
SKU: FWLF1634RL36
Price: $1,826.84
DWDM-XFP-48.51 - Cisco Single-Mode 10Gbps 10GBase-DWDM Fiber 80km 1548.51nm Duplex LC Connector XFP Transceiver Module
SKU: DWDM-XFP-48.51
Price: $547.37
DWDM-SFP-4851 - Cisco 1Gbps 1000Base-DWDM Single-mode Fiber 80km 1548.51nm Duplex LC Connector SFP Transceiver Module
SKU: DWDM-SFP-4851
Price: $1,147.54
DWDM-GBIC-1548.51 - Cisco 1.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1548.51nm SC Connector GBIC Transceiver Module
SKU: DWDM-GBIC-1548.51
Price: $3,144.07
DWDM-X2-48.51 - Cisco Single-Mode 10Gbps 10GBase-DWDM Fiber 80km 1548.51nm Duplex SC Connector X2 Transceiver Module
SKU: DWDM-X2-48.51
Price: $4,467.62
FTLF1621P2BCL - Finisar SONET 2.67Gbps OC-48 LR-2 / SDH STM L-16.2 Single-Mode Fibre 80km 1550nm Duplex LC Connector SFP Transceiver Module
SKU: FTLF1621P2BCL
Price: $359.66
FTLF1621P1BCL - Finisar 2.7Gbps OC-48/ST-16 LR-2 Single-Mode Fibre 80km 1550nm Duplex LC Connector SFP Transceiver Module
SKU: FTLF1621P1BCL
Price: $499.50
ONS-SC-2G-54.9 - Cisco Single-Mode OC-48 OC-48-DWDM Fibre 80km 1554.94nm LC Connector SFP Transceiver Module
SKU: ONS-SC-2G-54.9
Price: $274.75
NTK586BNE5 - Nortel 2.5Gbps OC-48 DWDM Single-Mode Fibre Channel 80km 1542.94nm LC Connector SFP Transceiver Module
SKU: NTK586BNE5
Price: $2,226.64
NTK586BJE5 - Nortel 2.5Gbps OC-48 DWDM Single-Mode Fibre Channel 80km 1541.35nm LC Connector SFP Transceiver Module
SKU: NTK586BJE5
Price: $2,389.51
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.