Cat Cage | Protect Your Equipment

Protect your vehicle’s catalytic converter from theft risk with Monroe’s stainless steel Cat Cage, which keeps one of your vehicle’s most valuable components safe while allowing easy access for service.

Key Benefits


The Cat Cage bolts securely to frame rails with tamper-resistant fasteners, surrounding all sides of your catalytic converter, deterring theft of this costly component and letting you rest easier when your truck isn’t within sight.


Sturdy but lightweight 14 gauge stainless steel is designed with bottom access so that you can easily grease the slip joint on the drive shaft without hassle or disassembly.


Keep your vehicles profitably in service by avoiding weeks of repair from theft, and eliminate replacement costs of catalytic converters.

Standard Features

  • 14 gauge stainless steel
  • Tamper-resistant fasteners
  • Installs easily and securely to frame rails using OE attachment points
  • Lightweight design
  • Accessible design allows grease access to driveshaft slip joint on applicable models
  • Designed for: Isuzu NPR, Isuzu NPR HD, Isuzu NQR, Isuzu NRR, Chevy W3500, Chevy W4500, Chevy W5500, Ford E350/E450, and Ford F350/F450/F550/F600 chassis

Download Literature

Cat Cage Sell Sheet
Cat Cage Installation Instructions - Isuzu NPR & NPR HD
Cat Cage Installation Instructions - Ford F350/F450/F550 Regular Cab
Cat Cage Installation Instructions - Ford F350/F450/F550 Crew Cab
Cat Cage Installation Instructions - Ford E350

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