Got questions about DEF delete emulators, installation, compatibility, or how they work? Here’s everything you need to know.

❓ Will this stop using DEF fluid?

Yes. Once you correctly fit our DEF delete box, your machine will no longer use DEF fluid and you’ll stop receiving any DEF-related warning lights or errors.

❓ Does this work on any machine?

Our DEF delete boxes are compatible with a wide range of construction equipment brands using SCR/DEF systems, including:

  • Hitachi (Isuzu engines)
  • CAT (C4.4, Perkins 1204F)
  • CASE (Dozers, Excavators)
  • Link-Belt
  • Doosan
  • Hyundai
  • Terex
  • Kobelco

📌 Don’t see your brand? Contact us with your machine model and we’ll confirm compatibility.

❓ How long does it take to install?

Most fitters or technicians can install the DEF emulator in under 1 hour. No special tools or tuning equipment required — it’s a plug-and-play install.

❓ Are DEF delete boxes waterproof?

Yes — all our DEF emulators are now fully waterproof and weather-resistant. They’re safe for outdoor installation and built to withstand tough job site conditions.

❓ Does the DEF emulator come with a warranty?

Absolutely. All our DEF delete kits include a 2-year warranty and access to 7-day support in case you need help during installation or troubleshooting.

❓ How do DEF emulators work?

DEF emulators are electronic devices that bypass or disable the DEF system in machines with SCR technology.

They send safe, simulated signals to the engine’s ECU, making it think the DEF system is operating correctly. This prevents:

  • ❌ Limp mode
  • ❌ DEF warning lights
  • ❌ Reduced power due to SCR failures

✅ Your machine runs normally — even if the DEF pump, NOx sensor, or injector has failed.

❓ What is a DEF delete?

A DEF delete is a modification that disables the Diesel Exhaust Fluid (DEF) system on a diesel machine. It is typically done to:

  • Stop limp mode from DEF faults
  • Eliminate the need for AdBlue/DEF fluid
  • Avoid expensive DEF system repairs
  • Improve reliability for off-road machinery

⚠️ We only supply DEF delete solutions for off-road construction and industrial equipment. Always check local regulations before performing a DEF delete.

❓ What is Diesel Exhaust Fluid (DEF)?

Diesel Exhaust Fluid (DEF) is a non-toxic mixture of urea and deionized water. It’s used in diesel machines with Selective Catalytic Reduction (SCR) systems to reduce harmful nitrogen oxide (NOx) emissions.

  • DEF is stored in a separate tank
  • It’s injected into the exhaust stream
  • It reacts with NOx to convert it into nitrogen and water

While environmentally helpful, DEF systems are complex and prone to faults — especially in harsh job site conditions.

📞 Still Have Questions?

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