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4 Pad DIY Consumer Installation Kit

Specifically designed to protect small/medium sized vehicles, such as sedans, hatchbacks, wagons, coupes and small 4WD’s from rust. The system is designed to prevent corrosion in the harshest environments such as beach driving, salted roads, snow and general coastline driving. Additionally, customers have experienced decreased maintenance costs and a reduction in paint oxidation. This system is suitable for new or used vehicles, offering a basic level of protection and a comprehensive 10-year product warranty..

Also Suitable for:-


See 6 Pad Systems for:-

  • Commercial Vans
  • Mine Site Vehicles
  • Commuter Buses
  • Vehicles with existing Rust.

9 reviews for CATIII-4HD

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  1. Aiden (verified owner)

    Very easy to install yourself and customer service was very easy to deal with. Hopefully a worthwhile investment for my 4WD.

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  2. Sharon F. (verified owner)

    Great communication, price and delivery time.

    1 out of 1 people found this helpful. Was this review helpful to you?
  3. Jonathan Johns (verified owner)

    Great service, friendly and efficient

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  4. Brian W. (verified owner)

    Good support from the company and Phil it was easy to install but a bit of a task hiding the wiring and making tidy under bonnet cheers guys

    1 out of 2 people found this helpful. Was this review helpful to you?
  5. Fernanda Manues

    Hi there. Thanks a lot! Really enjoyed reading this page.

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  6. Lisa Cooke (verified owner)

    As always very efficient service

    2 out of 2 people found this helpful. Was this review helpful to you?
  7. Steven (verified owner)

    Delivery was quick. Easy to install.

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  8. Jason Webber (verified owner)

    5 Stars

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  9. Chris (verified owner)

    Phil was very helpful and was a pleasure to deal with. My order arrived within 2 days and the installation process was simple with easy to follow instructions. I am happy to recommend CAT Systems to everyone.

    2 out of 2 people found this helpful. Was this review helpful to you?
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Additional information

Weight1000 g
Dimensions24 × 18 × 9 cm
Technical Specifications

Input Voltage >> 12V/24VDC
Operating Voltage >> 9V-32VDC
Output Transformers >> Two (2)
Output Power (to each Pad) >> 50Vpk-pk @ 12.5kHz
Ground >> – Negative
Max Current Draw >> 25ma +/-
Operating Temperature >> -30°C to 85°C

Package Contents

1 x CATIII-HD Main Module
4 x Large Sensor Pads
1 x Complete Wiring Harness
4 x 2m Pad Extension Lead
2 x Pad Wiring Splitters
Cable Ties
Alcohol Swabs
Spare Fuse
Misc Fixing Screws
Full Installation Instructions

View Detailed Product Information

CAT is pleased to provide the following extended warranties:-

a) System Warranty:-

CAT warrants the owner that the CAT System (Module) will be free from defects in material and workmanship for a period of Ten (10) years. ^

b) Vehicle Corrosion Warranty (Australia Only):-

The CAT System is warranted to help protect the vehicle against steel corrosion for a period of Ten (10) years from the date the vehicle was manufactured. ^

^(terms and conditions apply)

View Full Warranty Here
View Installation Guide