NGK 6419 Spark Plug NetSuite-ID_481094 Fits many 409777 / 40N777

Fits many 409777 / 40N777 / 40N877 / 40R677 / 40R877 / 40S877 / 40T677 / 40T876 / 40T877 / 40U877 / 44C677 / 44C777 / 44J677 / 44N677 / 44N777 / 44S677 / 44S877 / 44S977 / 44T777 / 44T877 / 44T977 / 44U677 / 44U877 / 49E877 / 49R977

Flat outer diameter: 3-5/8"

and 725ex series engines

Fits GT2000/SB

NGK 6419 Spark Plug NetSuite-ID_481094 Fits many 409777 / 40N777engineered 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