2 Pack 532134149 Gator Mulching Blade with 532193003 Bolt for YTH18542 YTH1842 YTA18542 YTH22V42 Replace Craftsman 42 Inch Mower Blades 42 Inch Mower Blade 532138971 138498

What It Is

This is a 2-pack of Gator mulching blades (532134149) plus two 532193003 bolts, designed to replace the factory blades on 42-inch Craftsman lawn tractors. The Gator design uses a serrated, multi-surface cutting edge to chop clippings finer for better mulching or bagging.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch deck—this blade set is only for that size. Compatible models include YTH18542, YTH1842, YTA18542, and YTH22V42, plus other Craftsman 42-inch tractors using OEM part numbers 532138971 or 138498. The blade length is 20.5 inches, center hole is 1 inch, and the offset (drop) is 0.75 inches. If your deck uses a different bolt pattern or spindle height, these won’t fit. Check your existing blade’s part number or measure your deck’s blade length before ordering.

Key Things to Know

• Installation difficulty: Easy—lift mower, remove old blades with a wrench, install new ones. Torque bolts to 70-90 ft-lbs.
• Gator vs. standard blades: The serrated edge cuts grass more aggressively, which can reduce runtime on thick lawns but improves mulching quality.
• Common gotchas: The included bolts (532193003) are correct for most Craftsman spindles, but double-check your spindle thread size (typically 5/8-11). Do not reuse old bolts.
• Pack includes two blades and two bolts—enough for one 42-inch deck. If you have a different deck size, this pack won’t work.

Should You Buy It

If you own a 42-inch Craftsman lawn tractor and want better mulching or a sharper cut without switching to a different brand, this is a solid, cost-effective upgrade. It’s ideal for homeowners who mow weekly and want to reduce clumping or bagging frequency. Not for commercial use or if you need a standard lift blade for side-discharge only.