Does it work for all gy6 engines?

These fit and work perfect in GYD.139QMB engines 49cc.50cc.80cc.100cc engines and BBK engines..

I read a lot of ppl say they use it in a 50cc gy6 scooter, but the manual says it takes a A7TC OR A7RTC. Will this work?

yes the atc is a cheap Chinese plug the us replace is this plug both the ngk copper core or iridum plug s the best I use this in 3 of my scooters 50cc and 80cc bigbore kits you will be happy you spent the few dollars more this is what you want its a 10mm plug direct fit and replacement for the atc brand the gap is pre gaped and ready to go in the gy6 engines they come with a threaded top no cap buy the atc brand dosnt use a cap either I hope this helps jim

Will this fit a yamaha YB 125 cc

If NGK (4549) CR7HSA is your standard plug, then yes.

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NGK Spark Plug CR7HIX Iridium IX 7544

Product ID: 49217589

Details

Brand
NGK
Core material
Iridium
Thread size
RM
Top material type
Metal
Vehicle service type
Motorcycle

⚡0.6mm iridium electrode for ultra-efficient ignition

⛽Optimizes fuel consumption for cost savings

🔥Laser-welded tech reduces misfires & sooting

R$326

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Description

⚡ Ignite your ride with precision and power — don’t get left behind!

SOOT RESISTANT DESIGN - Advanced laser-welded technology combats ignition issues caused by sooting, keeping your engine cleaner and more reliable.
SEAMLESS COMPATIBILITY - Specifically engineered for motorcycles, ensuring perfect fit and peak performance every ride.
FUEL EFFICIENCY BOOSTER - Enhanced combustion means lower fuel consumption—save money while reducing emissions.
PRECISION IGNITION POWER - Ultra-thin 0.6mm iridium electrode ensures lightning-fast starts and smooth engine performance.
TRUSTED GLOBAL EXPERTISE - From a legacy since 1936, NGK’s Iridium IX plugs bring OE-level quality to your motorcycle’s ignition system.

The NGK CR7HIX Iridium IX spark plug features a laser-welded 0.6mm iridium center electrode that minimizes ignition voltage for superior starting and combustion efficiency. Its advanced anti-sooting technology reduces misfires and keeps your engine running cleaner, while optimized ignition behavior lowers fuel consumption. Designed specifically for motorcycles, this premium spark plug combines decades of NGK’s automotive expertise to deliver reliable, high-performance ignition that enhances engine smoothness and fuel economy.

Specifications

ASIN	B000HDIP9I
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	19,830 in Automotive ( See Top 100 in Automotive ) 107 in Car Spark Plugs
Brand	NGK
Brand Name	NGK
Compatible with Vehicle Type	Motorcycle
Core Material	Iridium
Core material	Iridium
Country Of Origin	Italy
Customer Reviews	4.7 out of 5 stars 775 Reviews
Global Trade Identification Number	00087295175446
Included Components	nothing
Item Type Name	NGK CR-7 HIX CR7HIX Spark Plug
Item Weight	0.03 Kilograms
Manufacturer	NGK
Manufacturer Part Number	CR7HIX
Manufacturer Warranty Description	producer
Model Number	7544
Number of Items	1
Number of Packs	1
OEM Equivalent Part Number	09482-00314-SUZUKI,09482-00408-SUZUKI,7581.44-CITROËN,7581.44-PEUGEOT,90098-22415-LEXUS,90098-22415-TOYOTA,90098-22765-LEXUS,90098-22765-TOYOTA,90098-72023-LEXUS,90098-72023-TOYOTA,90793-20015-YAMAHA,90793-20071-YAMAHA,90793-20081-YAMAHA,90793-20133-YAMAHA,90793-20171-YAMAHA,90793-22059-YAMAHA,90793-22114-YAMAHA,9207 01107-KAWASAKI,9207 01154-KAWASAKI,92070-0037-KAWASAKI,94700-00250-YAMAHA,94700-0…
Thread Size	RM
Thread size	RM
Top Material Type	Metal
Top material type	Metal
UPC	087295175446
Unit Count	1.0 count
Vehicle service type	Motorcycle

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R$326

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered 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 Brazil.

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TrustScore 4.5 | 7,300+ reviews

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