We manufacture rugged, robust instrumentation kits to safeguard hard-working turbo-charged diesel engines.


The universal ThermoGuard EGT Gauge kit contains all the components necessary for an in-dash installation. It includes one stainless steel compression fitting to secure the thermocouple sensor to the engine's exhaust system.

The compression fitting can be supplied in four common sizes: 1/8" or 1/4" BSP (British Standard Pipe thread) plus 1/8" or 1/4" NPT (USA National Pipe Thread). (Please refer to the Installation page to determine which size fitting might best suit your vehicle, or contact us by email at:


  • Proudly Australian Owned and Operated.

  • All parts sourced from Australian suppliers/agents and Australian made where possible.

  • Industrial quality components used throughout.

  • Full 2 year warranty against faulty materials or workmanship.



    All prices in Australian Dollars (AUD) and include Australian Government GST (Goods and Services Tax) of 10%. 
    Postage/freight is not included in listed prices.
    GST not charged on orders from outside Australia.


  • Instantaneous display of EGT at all times, under all driving conditions.

  • Informs you of potential problems before it's too late!

  • Allows optimal engine tuning for 'real world' conditions.

  • Puts YOU in control!

Indicator Case for on or under-dash mounting

$25.00 + postage

​A strong ABS plastic case can be provided to install the digital indicator unit on or under the vehicle dashboard. The combined unit is quite light and can often be attached with double-sided adhesive tape (not supplied).

Adapter bush, M18 to 1/4" BSPF (Brass)

$5.50 + postage

​Many aftermarket turbocharger and exhaust systems are provided with a threaded port in the turbo outlet pipe. Some of these, including Australian DTS, MTQ & Safari systems, are threaded Metric M18 x 1.5. This brass adapter bush allows a standard 1/4" BSPT compression fitting to be used with these ports.

Socket, for post-turbo installation, 1/4" BSP female (Steel)

$5.50 + postage

​For turbocharger and exhaust systems that are not provided with a threaded port in the turbo outlet pipe, this steel
socket can be welded onto the exhaust pipe close to the turbocharger outlet and allows a standard 1/4" BSPT compression fitting to be used.

Land Rover 300Tdi exh. manifold, sensor mounting plate

$25.00 + postage

​The Land Rover 300Tdi engine without EGR [Exhaust Gas Recirculation] has a blanking plate on the exhaust manifold which is ideal for installing the thermocouple sensor. A replacement plate, drilled and threaded to accept the sensor, can be provided, complete with a new gasket.

(Please note: The compression fitting shown is not included with the plate.  One fitting is supplied with the standard EGT gauge kit.)






Tech Talk No.1

Why Diesels are Different

Tech Talk No.2

Turbo-charging and Super-charging (what it is & what it does, for diesels)

Tech Talk No.3

Charge Cooling for Diesels (intercoolers and what they do) 

Tech Talk No.4

Fuel Injection for Diesels (injection pumps & injectors)