What size socket would I need to install and remove this part?

It will either be 5/8" (16mm) or 13/16". I'm not sure since it's been 3 years since I installed it. Make sure it's a spark plug socket with the rubber bearing inside though to not only make it easier, but as to not damage it as well. If you have neither of those or don't know what they are, just bring your old spark plug into an auto shop and they can tell you which of the two you need.

Will this fit in a 1980 Honda z50a?

The best method is to use the Amazon lookup for a 1980 Honda z50a. One cannot depend upon an item being a suitable replacement simply because it fits the hole.

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⚡ Ignite your ride with NGK’s spark of perfection!

DURABLE COPPER CORE - Solid copper core maximizes conductivity and extends spark plug life.
WIDE HEAT RANGE MASTERY - Operates efficiently across a broader heat spectrum than standard plugs, reducing engine stress.
CARBON BUILDUP RESISTANCE - Advanced design prevents carbon deposits, ensuring consistent ignition and peak performance.
PREMIUM HIGH ALUMINA CERAMICS - Enhances heat transfer and electrical insulation for reliable spark delivery.
UNIVERSAL FIT FOR POWER RIDERS - Compatible with major ATV and motorcycle brands, making upgrades effortless.

The NGK Spark Plug #5129 features a heat range 7 design for superior temperature tolerance, a solid copper core for enhanced conductivity, and a nickel-tipped electrode that resists carbon buildup and pre-ignition. Engineered with high alumina ceramics, it ensures optimal heat transfer and electrical insulation, delivering longer life and reliable performance across a wide range of ATVs and motorcycles.

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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.

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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.

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Brand	NGK
Core Material	Copper
Thread Size	RM
Top Material Type	Ceramic, Nickel
Vehicle Service Type	ATV, Motorcycle
Automotive Fit Type	Universal Fit
UPC	748264615409
OEM Part Number	Honda 98069-57911 / 98069-57916, Kawasaki E92070-1125, Suzuki 09482-00354, Triumph T1290180, Yamaha 94701 00262
Manufacturer	NGK
Model	Spark Plug # 5129
Item Weight	0.01 ounces
Product Dimensions	9.35 x 5.51 x 3.07 inches
Item model number	5129
Is Discontinued By Manufacturer	No
Exterior	Chrome
Manufacturer Part Number	DPR7EA-9
Position	Top

NGKSpark Plug # 5129

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