First time spark plug buyer. Which model or how do I look for a better quality one?

Can't go wrong with NGK. I used to run these on my Honda CL175 and my Honda 550F in the 70'"s and currently run them in my Kawasaki Vulcan 900. Never had a problem.

Will this replace NGK D7EA?

could not find the answer, suggest you go to NGK's web page and put in your model, engine size, etc. that will give you the answer.

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NGK Spark plug 3901 Connection version M4 & center electrode nickel & ground electrode & interference suppression & 5 kOhm & with flat sealing seat Wrench width: 16 mm Long.

NGK Spark plug 3901 Connection version M4 & center electrode nickel & ground electrode & interference suppression & 5 kOhm & with flat sealing seat Wrench width: 16 mm Long.

Product ID: 270528270

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Details

Brand
NGK
Core material
Copper
Thread size
M10x1.0
Top material type
Metal
Vehicle service type
Motorcycle

⚡Solid copper core for max spark

🔇5 kOhm interference suppression

🛡️Zinc dipped shell resists corrosion

Description

⚡ Ignite your drive with NGK’s spark plug mastery!

NOISE FREE DRIVE - Built-in 5 kOhm resistor suppresses interference, protecting your vehicle’s electronics and radio signals.
FOULING NOT HERE - Extended insulator nose and corrugated ribs prevent fouling and flashover, keeping your engine clean and efficient.
DURABILITY MEETS DESIGN - Zinc dipped shell and triple gasket seal ensure long-lasting corrosion resistance and zero combustion leaks.
UNMATCHED IGNITION POWER - Solid copper core delivers a stronger, more reliable spark for peak engine performance.
PRECISION FIT FOR YOUR RIDE - Vehicle-specific design with a 16 mm wrench width ensures easy installation and perfect compatibility.

The NGK CPR7EA-9 spark plug features a solid copper core for enhanced ignition, a corrosion-resistant zinc dipped shell, and a 5 kOhm resistor for interference suppression. Designed with a longer insulator nose and corrugated ribs to prevent fouling and flashover, it ensures reliable, efficient engine performance. Its triple gasket seal eliminates combustion gas leaks, while the vehicle-specific fit and 16 mm wrench width make installation seamless.

Specifications

Manufacturer	NGK
Brand	NGK
Model	NGK CPR7EA-9
Product Dimensions	12.7 x 12.7 x 3.15 cm; 20 g
Item model number	CPR7EA-9
Exterior	Painted
Manufacturer Part Number	CPR7EA-9
OEM Part Number	Suzuki 09482-00621
Position	Rear
Item Weight	20 g

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