REFURBISHED
Cisco
Cisco ACS-4450-FANASSY Refurbished Fan Assembly ISR4451-X ISR4351
MPN: ACS-4450-FANASSY
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Lifetime
Warranty
ISO 9001
Certified Testing
R2v3
Responsible Refurb
25+
Years
5K+
Customers
ISO
Certified
✓
Tested
Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.
Genuine Cisco thermal management, professionally tested and ready to restore your ISR 4000 Series router to peak operating condition.
This refurbished Cisco ACS-4450-FANASSY is a genuine OEM fan assembly spare designed for the Cisco ISR4451-X/K9 and ISR4351/K9 routers. Professionally tested and reset to factory defaults, each unit is verified for full functionality before shipment. The ACS-4450-FANASSY carries Cisco part number 800-37197-02 and is the exact replacement module specified by Cisco in the ISR 4451-X Ordering Guide.The fan assembly is a field-replaceable unit (FRU) that houses all router fans in a single, hot-swappable tray, supporting quick in-service replacement without requiring a full router shutdown. An onboard temperature sensor in the host router governs fan speed automatically, running at minimum speed under normal conditions and ramping up under elevated ambient temperatures to maintain safe chassis thermals. The assembly delivers back-to-front airflow through the ISR chassis and is designed for standard rack-mount installations.
Sourcing a refurbished Cisco ACS-4450-FANASSY through WhaleyComm delivers the same genuine Cisco hardware quality your infrastructure demands at a fraction of new list pricing. Backed by WhaleyComm's ISO 9001-certified testing process and Lifetime Warranty, this is a dependable, cost-smart path to maintaining thermal integrity in your branch router fleet — trusted by 5,000+ enterprise customers over 25+ years.
Technical Specifications
Manufacturer
Cisco Systems
Part Number (MPN)
ACS-4450-FANASSY
Cisco Internal Part Number
800-37197-02
Product Description
ISR 4450 and 4350 Fan Assembly, Spare
Component Type
Fan Tray / Fan Assembly
Form Factor
Hot-swappable Field Replaceable Unit (FRU)
Airflow Direction
Back-to-front (business-to-bezel)
Fan Speed Control
Automatic via onboard temperature sensor
Compatible Platform Series
Cisco ISR 4000 Series
Condition
Refurbished
Ideal Use Cases
Fan Tray Failure Replacement
When a fan or fan assembly fails in a Cisco ISR4451-X or ISR4351 router, this is the exact Cisco-specified OEM spare for rapid hot-swap replacement, restoring thermal protection without taking the router offline.
Proactive Spare Inventory
Network operations teams running ISR 4451-X or 4351 fleets benefit from stocking a spare ACS-4450-FANASSY to minimize mean time to recovery in the event of a fan fault, particularly in environments without next-business-day Cisco SmartNet coverage.
Data Center and Branch Router Maintenance
Enterprise branch or data center routers operating in high-density environments generate significant heat; maintaining a functioning fan assembly is critical to sustaining router uptime and preventing thermal shutdowns.
Budget-Conscious Network Refresh
Organizations maintaining ISR 4451-X or 4351 routers beyond their initial SmartNet lifecycle can source this refurbished OEM fan assembly at significant cost savings versus new Cisco list price, extending hardware life without compromising thermal management.
Field Engineer Spare Kit
Field engineers and VAR technicians stocking deployment kits for Cisco ISR 4000 Series customer sites benefit from including a tested ACS-4450-FANASSY as a ready-to-install hot-swap spare for on-site service calls.
What's Included
1x Cisco ACS-4450-FANASSY Fan Assembly (refurbished)
Certificate of Testing
Lifetime Warranty — No Time Limits. No Questions.
Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it. We have stood behind our hardware for 25 years and 5,000+ customers — that is not a marketing line, it is our operating standard.
Compatibility Details
Review supported optics, cables, software, management protocols, and environment-specific compatibility guidance.
Compatible Routers
✓
Cisco ISR4451-X/K9 (ISR 4451-X Integrated Services Router)
✓
Cisco ISR4351/K9 (ISR 4351 Integrated Services Router)
Compatibility is confirmed in the official Cisco ISR 4451-X Ordering Guide (guide_c07-728759) and the Cisco 4000 Series Hardware Installation Guide. For compatibility verification specific to your environment, contact our engineering team: +1 214 607-4800 or sales@whaleycomm.com
Shipping & Returns
Clear fulfilment, tracking, return, warranty, and support information for enterprise hardware orders.
Shipping
Orders typically ship within 1-2 business days after payment confirmation. Tracking details are shared once the order has been dispatched.
Returns
Eligible products can be returned according to WhaleyComm's return policy. For DOA, warranty, or product-related issues, contact the support team for replacement or resolution.
Frequently Asked Questions
Product-specific answers about compatibility, testing, warranty, fulfilment, and purchase confidence.
The ACS-4450-FANASSY is the Cisco-specified fan assembly spare for the ISR4451-X/K9 and ISR4351/K9 routers. It is listed in the official Cisco ISR 4451-X Ordering Guide as the designated replacement fan tray for the ISR 4450 and 4350 Series platforms.
Yes. Cisco's 4000 Series Hardware Installation Guide classifies the fan tray as a hot-swappable field replaceable unit (FRU), allowing replacement while the router remains powered on. Cisco recommends completing the hot-swap within two minutes to prevent chassis overheating during the exchange.
No additional configuration is required. Fan speed is managed automatically by the host router's onboard temperature sensor, which modulates fan speed based on ambient thermal conditions without any manual intervention.
Yes. Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it at no cost — no time limits, no questions asked.
Every unit goes through our ISO 9001-certified testing process: full power-on diagnostics, port-by-port functionality testing, firmware verification, factory reset, and final inspection. A Certificate of Testing ships with every unit.
Cisco ACS-4450-FANASSY Refurbished Fan Assembly ISR4451-X ISR4351
$129.00
Cisco
Cisco ACS-4450-FANASSY Refurbished Fan Assembly ISR4451-X ISR4351
MPN: ACS-4450-FANASSY
$129.00
In Stock — Ships Same Day
