6PK Oregon 91-622 Mower Blades Replacement for Scag/Encore/Deere 363291, 481707, 482462, 48108, 481707, 481711, 48185, 482462, 482878, 482961, AM104490, PT8721, TCU35393, TCU37208, 363055, 390665

What It Is

This is a 6-pack of Oregon 91-622 replacement mower blades designed for commercial and residential zero-turn and riding mowers from Scag, Encore, and John Deere. They’re built for heavy-duty cutting on 48–72-inch decks, commonly used in large lawns, farms, or commercial landscaping.

Fitment & Compatibility

Before buying, verify your deck size and blade length. These blades are 20.5 inches long with a 1-inch center hole and 0.25-inch thickness. They cross-reference to OEM numbers: John Deere 363291, 481707, 482462; Scag 48108, 481707, 481711, 48185, 482462, 482878, 482961; and others like AM104490, PT8721, TCU35393, TCU37208, 363055, 390665. Measure your existing blade’s length, hole diameter, and thickness to confirm fit. Check your deck’s spindle pattern—these use a standard single-center hole, not offset or multi-hole. Not for push mowers or decks under 48 inches.

Key Things to Know

• Quality: Oregon blades are heat-treated and hardened for durability, but they’re not as thick as some OEM Scag blades—expect slightly faster wear under heavy use.
• Installation: Easy with basic tools. Use a torque wrench to tighten blade bolts to 70–90 ft-lbs. Always lift the mower deck and disconnect the spark plug before swapping blades.
• Common Gotcha: These are sold as a 6-pack, which suits triple-blade decks (e.g., 60-inch Scag). If your deck uses 2 or 4 blades, you’ll have extras. Also, check that your deck uses a 1-inch arbor hole—some older models use 5/8-inch or 7/8-inch.
• Balance: Oregon blades are factory-balanced, but verify after sharpening. An unbalanced blade causes vibration and bearing wear.

Should You Buy It

Buy this if you own a Scag, Encore, or Deere zero-turn with a 48–72-inch deck and want a cost-effective, reliable aftermarket alternative to OEM blades. It’s ideal for commercial users who replace blades in bulk, but skip it if you need thicker, longer-lasting steel for abrasive conditions—stick with OEM Scag.