Nett 3-way catalysts
BlueCAT 300 for Large Spark-Ignition Engines
A retrofit emission control system for gas-fuelled forklifts, floor care machines, aerial lifts and ground support equipment – verified by the California Air Resources Board.

- over 90%CO and NOx removed
- over 80%HC removed
- CARBverified (LSI-2 rule)
- direct fitreplaces the muffler
How it works
How the BlueCAT 300 Works
Catalyst and Controller
A 3-way catalytic muffler, with an oxygen sensor port built in, works with a digital air/fuel ratio controller. The controller keeps the engine at the right mixture so the catalyst removes CO, HC and NOx together.
Lights on the controller show power, faults, warm-up, the oxygen sensor and how the mixture is being trimmed; a dash warning light tells the driver if the system fails.
Why the BlueCAT 300
Quick to Fit, Easy to Check
Verified
CARB verified for uncontrolled LPG and CNG LSI engines.
Complete Kit
Converter-muffler, self-diagnosing controller, wiring, connectors and instructions.
Quiet
Matches or beats the original muffler for noise and back pressure.
Rugged
Controller in a metal enclosure for the dash or engine bay.
Literature & related
More Information
- BlueCAT 300 brochure
CARB-verified 3-way system for LPG and CNG engines · PDF, 482 KB - Nett catalytic mufflers
How 3-way catalytic mufflers and A/F control work · PDF, 374 KB
Not Sure Which One You Need?
Tell us about the job – the machine, the conditions and what it has to do – and we’ll help you choose the right Nett Technologies product.