6PK USA Mower Blade for 52" Exmark Lazer Z 103-6402 103-6402-S 103-6382 Toro 109-6873

What It Is

This is a 6-pack of USA-made mower blades designed for 52-inch cutting decks on commercial zero-turn mowers, specifically Exmark Lazer Z and Toro models. They are a direct replacement for OEM part numbers 103-6402, 103-6402-S, 103-6382, and Toro 109-6873.

Fitment & Compatibility

Before buying, verify your mower has a 52-inch deck—this blade set will not fit 48", 60", or other sizes. Cross-check your existing blade part number against the OEM numbers listed above. These blades are not universal; they are shaped and balanced specifically for Exmark Lazer Z and Toro Z-Master/Z-Turn models with the 52" fabricated deck. Measure blade length (should be ~20.5 inches), center hole diameter (usually 5/8" or 1"), and offset/angle to match your current blades. If your mower uses a different spindle or blade pattern (e.g., G5 or G6), these will not fit.

Key Things to Know

• Quality: USA-made steel, typically thicker and longer-lasting than offshore aftermarket blades. Expect good balance out of the box.
• Installation: Moderate difficulty—requires removing deck, using a blade removal tool or impact wrench, and torquing to spec (usually 70-90 ft-lbs). Always lift or block the deck safely.
• Common gotchas: These are not for Exmark Quest or Toro TimeCutter models (those use different blade patterns). Also, some users report needing to re-sharpen out of the box for optimal cut. Always replace blades in sets (all 3 or all 6) to avoid vibration.
• Frequency: Replace every 25-50 hours or when dull/nicks appear. Dull blades tear grass, leading to brown tips.

Should You Buy It

Buy this if you own a 52" Exmark Lazer Z or Toro Z-Master and want a reliable, USA-made OEM-equivalent blade at a fair per-blade price. It’s ideal for commercial landscapers or heavy residential users who cut frequently and value durability. If you have a different deck size or brand, or only need 1-2 blades, look for a smaller pack or individual replacements.