Oregon 192-106 Lawn Mower Blade, 21 3/8", 100 Series Blade for John Deere

What It Is

The Oregon 192-106 is a 21 3/8-inch, 100 Series replacement blade designed for select John Deere walk-behind mowers. It’s a universal aftermarket blade intended for standard mulching, bagging, or side-discharge cutting.

Fitment & Compatibility

Before buying, verify three things: blade length (21 3/8" from tip to tip), center hole diameter (must match your spindle—Oregon lists a 1" center hole), and deck size (typically fits 21" or 22" decks). The “100 Series” indicates compatibility with older John Deere models like the 100, 110, 115, 125, 135, and 155 series, but it may also fit newer D100/D110/D130 models. Always cross-reference your mower’s model number with Oregon’s fitment chart online. This is an aftermarket part, not OEM John Deere—dimensions are identical, but steel grade or coating may differ. Measure your existing blade’s length and center hole diameter with a tape measure to confirm fit.

Key Things to Know

• Quality vs. OEM: Oregon blades are generally durable, but some users report shorter sharpness life compared to John Deere factory blades. Expect 1–2 seasons of typical residential use.
• Installation: Straightforward for DIYers—use a socket wrench and blade removal tool (or block wood to prevent rotation). Torque to 35–50 ft-lbs. The blade is not reversible; the sharp edge faces the direction of rotation.
• Balance Check: Aftermarket blades can be slightly off-balance out of the box. Test by hanging the blade on a nail or using a balancer; file the heavy side if needed to avoid vibration.
• Reviews Note: The 3.8/5 rating with only 4 reviews means limited feedback. Most complaints center on fitment mismatches—double-check your mower deck’s exact blade length, as 21 3/8" is a specific size that may not fit all 21" decks.

Should You Buy It

Buy this if you need a budget-friendly replacement for a compatible John Deere 100-series mower and you’re comfortable with a quick fitment check and possible balancing. Skip it if you want guaranteed OEM longevity or if your mower requires a different blade length or center hole.