Motaclan
Make Your Marque
Gunson G4125 Gastester Digital Exhaust CO Analyser
Part No: 6LG4125
đ APPLICATION / USE
Gunson Gastester Digital exhaust carbon monoxide analyser designed for measuring CO levels in petrol engine exhaust gases.
Digital Exhaust CO Measurement
Designed to assist with testing and adjusting petrol/air mixtures on compatible carburettor and petrol injection systems.
Suitable Applications:
Classic Petrol Cars
Carburettor Engine Tuning
Petrol Injection System Adjustment
Motorcycle Engine Tuning
Single-Cylinder Petrol Engines
Pre-Catalytic Converter Vehicles
Compatible Fuel Types:
Leaded & Unleaded Petrol
Particularly useful for checking exhaust CO levels following carburettor, ignition and air filter maintenance.
Calibrated Measurement Range: 0-10% CO
đ§ PART DETAILS
Brand: Gunson
Part Number: 6LG4125
Gunson Reference: G4125
Product Range: Gastester Digital
Type: Exhaust Carbon Monoxide Analyser
Measurement: CO Percentage
Calibrated Range: 0-10% CO
Typical Accuracy: +/- 0.5% CO
Accuracy Temperature: 15-25 Degrees Celsius
Display: Digital
Power Supply: 12V DC Vehicle Battery
Calibration: Adjustable Fresh Air Calibration
Pump Type: Exhaust Pulse Pump
Country of Manufacture: United Kingdom
Quantity: 1 Complete Kit
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KEY INFORMATION
đ§ TOOLS INCLUDED
1 x Gunson Digital Gastester Instrument
1 x Collector Box & Pulse Pump/Water Trap Assembly
1 x Metal Exhaust Probe with Retaining Springs
3 x Flexible Plastic Pipes
12V Battery Connection Leads with Clips
Manufacturer Operating Instructions
Digital Carbon Monoxide Measurement
Displays exhaust CO concentration as a percentage for petrol engine tuning applications.
Carburettor Mixture Adjustment
Designed to assist with setting the petrol/air mixture on compatible carburettor systems.
Petrol Injection Applications
Can also be used for CO checks on compatible petrol injection systems.
Adjustable Calibration Control
Calibrates in fresh air before exhaust gas testing.
CO Measurement Accuracy
Typical accuracy of +/- 0.5% CO within the manufacturer's specified operating conditions.
Pulse Pump System
Uses exhaust pressure pulses to move exhaust gas through the measuring instrument.
Water Trap Assembly
Designed to manage moisture collected from exhaust gases during testing.
Metal Exhaust Probe
Supplied with retaining springs to hold the probe inside a compatible exhaust outlet.
No Replacement Filters Required
Manufacturer confirms that the instrument does not require replacement filters.
12V Battery Powered
Connects to a suitable 12V vehicle battery using the supplied connection leads.
Classic Vehicle Maintenance
Particularly useful for tuning compatible classic petrol vehicles and carburettor-equipped engines.
Made in the UK
Gunson G4125 digital exhaust CO analyser.
âšī¸ PLEASE CHECK BEFORE ORDERING
IMPORTANT: This instrument measures exhaust carbon monoxide (CO) only.
NOT suitable for official MOT emissions testing.
It is not a replacement for professional multi-gas emissions analysis equipment.
Not suitable for testing vehicles fitted with catalytic converters where greater measurement accuracy is required.
Power Supply: 12V DC Only.
Do not connect directly to 6V or 24V electrical systems.
The instrument requires fresh air calibration and an appropriate warm-up period before testing.
Always follow the manufacturer's operating instructions and the vehicle manufacturer's recommended CO settings.
Safety Warning:
Vehicle exhaust gases contain poisonous carbon monoxide.
Never operate an engine in an enclosed or poorly ventilated area.
Keep the instrument away from hot exhaust components and ensure adequate ventilation during testing.
The Gastester is intended for engine tuning and CO comparison, not certification of emissions compliance.
đĻ DELIVERY INFORMATION
Dispatched same day if ordered before 12PM (Mon-Fri).
Please Note: Free UK Shipping for large parcels is for UK Mainland Only. It does not include areas designated as 'Highlands and Islands'. These include postcodes: AB, BT, GY, HS, IV, JE, IM, KW, PA, PH, TD, ZE. We can ship to these postcodes but we may have to make an additional charge as our carrier charges a premium for delivering to these areas. Additional postage charges may also be added to countries outside of Europe with large items. If you're unsure, please get in contact for a postage quote.
Motaclan
Make Your Marque
Motaclan are specialists in the sourcing, manufacture and distribution of classic car parts for the trade and consumer. Our roots in the British classic car community stretch back almost 40 years through Leacy Classics and the iconic Mini brand Wood and Pickett. Leacy Group acquired MG Rover parts supplier XPart in 2017 and Racing Green's TVR assets in 2022, bringing these respected automotive businesses together under the Motaclan name.
Check out our other eBay listings for more classic car parts.
VAT Number: GB945728290
Motaclan Limited is a company registered in England.