Toro Genuine OEM (Fits Exmark) 2-Pack of 137-1999-03 Blades Timecutter and Exmark Quest Z-Turn Riding Mowers (2)

What It Is

This is a 2-pack of OEM replacement blades (part #137-1999-03) designed for 42-inch and 50-inch cutting decks on Toro Timecutter and Exmark Quest zero-turn riding mowers. They’re for mulching, bagging, or side-discharge mowing.

Fitment & Compatibility

Before buying, confirm your deck size (42" or 50") and model series—Toro Timecutter (MX4200, MX5000, SS4225, etc.) or Exmark Quest (Q42, Q50, QZT-42, etc.). These are OEM blades, not aftermarket, so they match factory specs exactly. Check your current blade’s length (typically 16.5 inches), center hole (5/8 inch), and offset (0.25 inch). If your mower uses a different blade length or hole size, these won’t fit. Always verify your mower’s model number against Toro/Exmark compatibility lists.

Key Things to Know

• Quality: Genuine Toro/Exmark OEM steel, heat-treated for durability. Sharper out of box than many aftermarket options.
• Installation: Straightforward—remove the old blade, note the orientation (curved edge up), and torque to 70-90 ft-lbs. Use a blade removal tool or block of wood to lock the spindle.
• Gotchas: These are not universal; they won’t fit non-Exmark or non-Timecutter models. Check for blade spindle damage if your old blade was worn unevenly.
• Pairing: You get two blades—enough for one complete deck change. If you have a 50" deck (three blades), you’ll need a third blade (sold separately).

Should You Buy It

Buy this if you own a Toro Timecutter or Exmark Quest and want a drop-in, no-guesswork replacement that matches factory performance. It’s a good value for OEM quality at this price, especially if you value sharpness and longevity over cheap aftermarket alternatives. Skip it if you have a different mower brand or deck size.