Toro 4PK Genuine OEM 21" Lawn Mower Blade 133-8182-03 108-0954-03

What It Is

This is a set of four genuine Toro OEM blades designed for 21-inch walk-behind mowers. They’re the direct replacement for the original blades on Toro TimeCutter, Super Recycler, and Personal Pace models, intended for standard residential grass cutting and mulching.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: This kit fits only 21-inch cutting decks. Measure your deck width to confirm.
• Model series: Works with Toro TimeCutter (e.g., 21199), Super Recycler (e.g., 20353), and Personal Pace (e.g., 20371) models. Check your mower’s model number on the underside of the deck or owner’s manual.
• OEM vs aftermarket: These are genuine Toro blades (OEM part numbers 133-8182-03 and 108-0954-03). Aftermarket blades may differ in thickness, balance, or hole alignment—stick with OEM for guaranteed fit.
• Measurements: Each blade is about 21” long, with a 5-point star center hole and 2.5” blade-mounting pattern. Measure your old blade’s hole shape and spacing to confirm match.

Key Things to Know

• Quality: OEM blades are heat-treated and balanced for longer edge retention and less vibration than most aftermarket alternatives.
• Installation difficulty: Easy—requires a socket wrench and a blade removal tool (or a block of wood to hold the blade). Torque bolts to 45-55 ft-lbs.
• Common gotcha: The blades are sold as a set of four, but many 21” Toro mowers use only two blades. Check your deck’s blade count before buying to avoid overspending.
• Sharpening: These can be sharpened 2-3 times before replacement, but OEM blades are thin—don’t over-grind or you’ll lose balance.

Should You Buy It

Buy this kit if you own a 21-inch Toro walk-behind mower that uses two or four blades and want guaranteed fit, durability, and balanced cutting. It’s ideal for homeowners who prefer OEM reliability over cheaper aftermarket options. Skip it if your deck is larger than 21” or you only need a single blade replacement (buy individual 133-8182-03 or 108-0954-03 instead).