Oregon 91-622 18-Inch Lawn Mower Blade for Scag
The Oregon 91-622 Lawn Mower Blade is a USA-made replacement blade for select Scag, Ferris, Gravely, Great Dane, Encore, Lesco, Snapper, Toro, Wright, and Bad Boy mower decks. It measures 18 inches long, 2-1/2 inches wide, and 0.203 inch thick, with a 5/8-inch round center hole and approximately 1 inch of air lift.
This blade cross-references Rotary 3404 and numerous OEM blade numbers. Always verify the original blade number, blade dimensions, center-hole size, mower model, deck size, and blade quantity before ordering.
This listing includes one Oregon 91-622 mower blade.
Product Specifications
- Oregon part number: 91-622
- SKU: ORE-91-622
- Blade length: 18 inches
- Blade width: 2-1/2 inches
- Blade thickness: 0.203 inch
- Center hole: 5/8 inch round
- Air lift: Approximately 1 inch
- Country of origin: Made in USA
- Package quantity: One blade
Replaces Rotary Part Number
- Rotary 3404
Replaces Select OEM Blade Numbers
Scag
- 48108
- A48108
- 481707
- 481711
- 482462
- 482878
Ferris
- 1521227
- 5021227
- 5021227S
- 5101756
Gravely
- 0450300
- 00450300
- 03253800
- GDU10231
Additional Cross-References
- Bad Boy: 038300000
- Encore: 363291
- Great Dane: D18037
- Lesco: 050125
- Snapper / Kees: 5101756, 5101756SYP
- Toro: 133-2134
- Wright: 71440001
Deck and Blade Quantity Guidance
Many compatible 36-inch mower decks use two 18-inch blades, while many compatible 52-inch mower decks use three blades. Deck configurations vary, so check your mower's parts manual before ordering.
Fitment Information
The Oregon 91-622 may fit your mower when the OEM blade number, 18-inch length, 2-1/2-inch width, 0.203-inch thickness, 5/8-inch center hole, cutting profile, and required blade quantity match.
Do not order by mower brand or deck width alone. Manufacturers may use different blades across models, production years, deck configurations, and serial-number ranges.
Frequently Asked Questions
What does the Oregon 91-622 blade fit?
It fits select Scag, Ferris, Gravely, Great Dane, Encore, Lesco, Snapper, Toro, Wright, and Bad Boy mower decks that use a matching OEM blade number and dimensions.
What size is the Oregon 91-622 blade?
It measures 18 inches long, 2-1/2 inches wide, and 0.203 inch thick.
What center hole does Oregon 91-622 use?
It has a 5/8-inch round center hole.
Does Oregon 91-622 replace Rotary 3404?
Yes. Oregon 91-622 cross-references Rotary 3404.
Does it replace Scag 482878?
Yes. Oregon 91-622 is commonly cross-referenced with Scag 482878, along with Scag 48108, 481707, 481711, and 482462.
How many blades are included?
This listing includes one Oregon 91-622 mower blade.
How many blades does a 52-inch deck use?
Many compatible 52-inch decks use three blades, but the required quantity depends on the exact mower and deck configuration.
Is Oregon 91-622 made in the USA?
Yes. Oregon 91-622 is marked as made in the USA.
How do I confirm fitment?
Match the OEM blade number and compare the blade length, width, thickness, center-hole size, cutting profile, and blade quantity with your existing blade or parts manual.
Installation Reminder
Turn off the mower, remove the ignition key, disconnect the spark-plug wires or battery, and allow all moving parts to stop before servicing the deck. Install the blade in the correct cutting direction and tighten the hardware to the mower manufacturer's recommended torque specification.