NGK 7098 Spark Plug NetSuite-ID_511906 Straight rib tread

Straight rib tread

as well as many950 -1000 Series and Professional Series 7

The model 21R807-0033-F1 boasts 344 CC

Fits MTD and Cub Cadet model 138AQ91 with 50" deck (2012)

Designed to pair with Oregon 90 series narrow kerf chain

NGK 7098 Spark Plug NetSuite-ID_511906 Straight rib treadengineered 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