Introducing...

Wide-band Air-Fuel (Lambda) Gauge
This is the ultimate tuning aid! Dual digital and radial LED displays provide accurate real-time readout of either air/fuel ratio or lambda (user-selectable). A 0-4Volt analogue output can be connected to a data-logger or to an ECU to provide real-time closed-loop feedback for improved mapping. Supplied complete with wiring harness and includes Bosch sensor.

• User-selectable Air/Fuel or Lambda real time display
• Programmable Alarm warns of dangerous lean condition
• Peak Recall of leanest value during last run
• Suitable for all fuel types with AFR from 6:1 to 20:1
• 0-4 Volt Data Logger or ECU output

		Wideband Lambda Gauge
		ST3401		M18x1.5
		includes Bosch sensor as standard

Sensor has M18x1.5 mm thread that can be mounted to the exhaust system via a lambda sensor welded bung. Sensors thread will also will fit narrowband sensor plugs currently on exhaust systems.

Bosch Lambda Sensor LSU 4.2 Specifications

Gauge comes complete with wiring harness and associated sensor.

Stack Professional Stepper Motor Analogue Gauges

These precision auxiliary instruments combine digital microprocessor accuracy with a high-precision stepper motor needle movement, to provide a new level of accuracy and reliability in 52mm gauges. They combine the durability and readability of 270° mechanical gauges with the easy installation and safe operation of conventional electric gauges.

The 270° dialface together with the new white LED backlighting and illuminated needle ensure excellent readability day or night.

52mm diameter Fast, smooth stepper motor needle drive 270° full sweep movement for excellent readability Remotely mounted solid-state sensors keep hazardous fluids in the engine compartment Better than 2% accuracy All-electronic design for maximum reliability White LED through-the-dial backlighting White LED illuminated needle

		Oil Pressure
		Professional Stepper Motor Analogue
		ST3301	0 -1 BAR	M10x1

		ST3302	0-100 PSI	1/8NPT

		Fuel Pressure
		Professional Stepper Motor Analogue
		ST3303	0 -1 BAR	M10x1

		ST3304	0-15 PSI	1/8NPT

		Fuel Pressure
		Professional Stepper Motor Analogue
		ST3305	0-7 BAR	M10x1

		ST3306	0-100 PSI	1/8NPT

		Water Temperature
		Professional Stepper Motor Analogue
		ST3307	40-120°C	M10x1

		ST3308	100-260°F	1/8NPT

		Oil Temperature
		Professional Stepper Motor Analogue
		ST3309	40-140°C	M10x1

		ST3310	140-280°F	1/8NPT

		Boost Pressure
		Professional Stepper Motor Analogue
		ST3311	-1.0 to +2.0 BAR	T-Fitting

ST3312 30inHg to +30 PSI T-Fitting

		Exhaust Gas Temperature
		Professional Stepper Motor Analogue
		ST3313	0-1100°C

		ST3314	0-2000°F

		Fuel Level*
		Professional Stepper Motor Analogue
		ST3315
		*The Fuel Level gauge has 7 pre-set and a universal-programmable calibration, to suit all normal tank sensors with a resistance range of 0-280ohms.

		Battery Voltage
		Professional Stepper Motor Analogue
		ST3316	8 - 18 V

All gauges come complete with wiring harness and associated sensor except fuel level and voltage gauges.

Electric Gauges
These low-priced electrical auxiliary instruments feature advanced 90° air-core movements and simple 3-wire installation. Electrical sensors keep hazardous fluids in the engine compartment. White LED backlighting and illuminated needle ensure excellent readability day or night.

52mm diameter 90° sweep No large connectors and tubing coming out the back. Can be mounted in more unusual positions without connections showing. Easier to install in tight areas. Easier to install a great distance from the item being measured. Stops fluids from entering the passenger compartment.

		Oil Pressure
		Electric Gauge
		ST3201	0-7 BAR	M10x1

		ST3202	0-100 PSI	1/8NPT

		Water Temperature
		Electric Gauge
		ST3207	40-120°C	M10x1

		ST3208	100-250°F	1/8NPT

		Oil Temperature
		Electric Gauge
		ST3209	60-150°C	M10x1

		ST3210	140-300°F	1/8NPT

		Boost Pressure
		Electric Gauge
		ST3211	0 to 2.5 BAR	M10x1

		ST3212	0 to 35 PSI	1/8NPT

		Battery Voltage
		Electric Gauge
		ST3216	8 - 18 V

All gauges come complete with associated sensor (except voltage gauge).

Mechanical Gauges
This range of gauges have been specifically designed for vehicles with no or low powered electrical systems.

52mm diameter Bronze bourdon tube 270° sweep movement Mechanical gauges do not require 12V power to operate. They make direct physical contact with the item they are reading. They do this through tubing or lines, which eliminates the need for electric signals. Ideal for vehicles that operate on voltages other than 12V, with no voltage at all (magneto applications) or operate on a battery with no generator. Note: 12 volt supply is needed if backlighting required.

		Oil Pressure
		Mechanical Gauge
		ST3101	0 -7 BAR	M10x1

		ST3102	0-100 PSI	1/8NPT

		Water Temperature
		Mechanical Gauge
		ST3107	50-115°C	3/8BSP

ST3108 120-240°F 1/2NPT

		Boost Pressure
		Electric Gauge
		ST3111	-1.0 to +2.0 BAR	Universal Fitting

		ST3112	-30inHg to +30 PSI	Universal Fitting

Frequently Asked Questions

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