Oregon 91-638 Mower Blade, 21" Compatible w/ Scag NetSuite-ID_571426 Premium deck belt

Premium deck belt

Throttle cable bracket "adjuster"

Mulching feature

18 and 21 HP V-twins 15

For drive belt and mower deck on many 12-22HP front engine tractors

Oregon 91-638 Mower Blade, 21" Compatible w/ Scag NetSuite-ID_571426 Premium deck beltThe Oregon 91 638 lawn mower Blade is created to provide consistency and longevity, while delivering a cleaner cut and quality results. 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. 5 8" center hole Extended cutting edge allows for more efficient cutting during rotations