NGK 1643 Spark Plug NetSuite-ID_559110 It has an inner diameter

It has an inner diameter of 1/4" and a outer diameter of 3/8"

Makes accurate

Fits: IS1000Z

Yard Machines and other riding mower models

Fits John Deere models

NGK 1643 Spark Plug NetSuite-ID_559110 It has an inner diameterengineered specifically for lawn mowers, chainsaws, trimmers, and other outdoor machinery, these spark plugs deliver exceptional performance and reliability. Many parts look similar, so its crucial to ensure youre choosing the right replacement for your original equipment or engine model. Not sure? Use our Parts Lookup Tool to view part diagrams and find the correct replacement. Trivalent metal plating provides superior anti corrosion and anti seizing