Aftermarket Replacement Set of Three (3) Oregon Gator G3 High Lift Mulching Blades for 52inch Simplicity 18inch X 5/8inch Hole

What It Is

This is an aftermarket set of three Oregon Gator G3 high lift mulching blades designed for 52-inch Simplicity mower decks. They use a 18-inch blade length with a 5/8-inch center hole, intended for mulching leaves and grass while also providing strong bagging performance.

Fitment & Compatibility

Before buying, confirm your mower has a 52-inch deck and accepts 18-inch blades with a 5/8-inch center hole. These are aftermarket blades, not OEM Simplicity parts, so they may not fit all Simplicity models exactly—check your deck’s blade retention system and spindle shape. Also verify the blade thickness (typically 0.204–0.250 inches) to ensure it clears the spindle and washer. If your Simplicity uses a different hole size (e.g., 7/16-inch or 1-inch), these won’t work.

Key Things to Know

• Quality: Oregon Gator G3 blades are known for durability and a long-lasting edge, but as aftermarket parts, they may not match OEM balance or lift height exactly.
• Installation: Moderate difficulty—requires lifting the mower, removing old blades, and torquing to spec (usually 70–90 ft-lbs). Always use a torque wrench to avoid damage.
• Common gotchas: Check blade orientation (curved edge faces up for lift). These are high-lift, so they increase vibration if not balanced; consider balancing after install. Also verify the center hole is fully seated on the spindle—some aftermarket blades have a slightly different hole shape.
• Performance: Great for mulching and bagging, but high lift can strain the engine on thicker grass; avoid overloading the deck.

Should You Buy It

Buy this set if you need a reliable, affordable replacement for a 52-inch Simplicity deck and you’re comfortable with aftermarket parts. It’s a solid choice for mulching and bagging, but skip it if you want OEM fitment or if your deck uses a non-standard center hole or blade length. For the price, it’s a good value if you confirm compatibility first.