How many/ which gases does this tool measure?

Has anyone actually used this, and does it perform well enough to go by its measurements before smog so I can tune and then smog same day if possible????

Can it meassure HCppm, CO%, CO2%, NOXppm? This is requirement in Mexico.

No, it is strictly for CO%.Cheers!

Can this be used to test the radiator for head gasket leaks?

No, measures only combustion by-product CO or Carbon Mon-oxide. Used to adust or test fuel mixture.

Gunson G4125 Gastester Digital

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

المساعدة تتبع الطلب

الحساب عربة التسوق

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

المساعدة تتبع الطلب

الحساب عربة التسوق

AED 1050

Duties & taxes included

In stock

Sold byAmazon UAEDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UAE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

⚡ Tune Like a Pro, Test Like a Legend

BUILT TO LAST - No moving parts means minimal maintenance and maximum reliability—engineered for longevity.
HASSLE FREE OPERATION - Calibrates effortlessly in air with no filters to change, saving you time and money.
PRECISION YOU CAN TRUST - Accurate CO measurement within 0.5% at optimal temps ensures flawless carburettor tuning every time.
ESSENTIAL FOR CLASSIC CAR PROS - The go-to gas tester for petrol, leaded, unleaded, and injection systems—join the elite technicians who rely on Gunson.
MADE IN THE UK TRUSTED WORLDWIDE - Proudly manufactured in Warwickshire, combining British craftsmanship with global ethical sourcing.

The Gunson G4125 Gastester Digital is a precision gas analyzer designed for accurate carburettor and petrol injection system tuning. Featuring 0.5% CO measurement accuracy, no moving parts for durability, and filter-free calibration, this British-made tool offers reliable, low-maintenance performance trusted by classic vehicle technicians worldwide.

Specifications

ASIN	B002XF1VW6
Best Sellers Rank	#712,485 in Automotive ( See Top 100 in Automotive ) #9 in Gas Analyzers
Brand	GUNSON
Customer Reviews	3.8 3.8 out of 5 stars (315)
Date First Available	August 16, 2012
Item Weight	1.1 pounds
Item model number	G4125
Manufacturer	Tool Connection (EU)
Manufacturer Part Number	LASG4125
Model	G4125
Product Dimensions	5.24 x 9.65 x 7.2 inches

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

AED 1050

Duties & taxes included

In stock

Sold byAmazon UAEDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UAE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews