134149 138971 532138971 138498 Mulching Blades with 5-Star Mounting Pattern - Fits Craftsman Poulan Pro Husqvarna 42" Deck Riding Lawn Mower Craftsman LT2000 LT1000 (2 Pack)

What It Is

This is a 2-pack of mulching blades designed for 42-inch deck riding mowers from Craftsman, Poulan Pro, and Husqvarna. They replace OEM part numbers 134149, 138971, 532138971, and 138498, and are intended for mulching grass clippings into fine particles for lawn nutrition.

Fitment & Compatibility

• Deck size: Only fits 42-inch cutting decks. Measure your deck width before ordering.
• Brand/model: Fits Craftsman LT1000, LT2000, Poulan Pro, and Husqvarna models with a 42-inch deck. Check your mower’s model number against the OEM part list.
• Mounting pattern: Uses a 5-star mounting pattern (5-point star center hole). Confirm your spindle’s pattern—some older or different models use a 4-point or diamond pattern.
• Blade measurements: OEM blades are approximately 20.5 inches long, 2.5 inches wide, with a 0.25-inch thickness and a 1-inch center hole. Measure your old blade’s length and hole size to verify.
• OEM vs aftermarket: These are aftermarket replacements. They match OEM specs but may have slight finish differences. No issues reported with fit or balance in reviews.

Key Things to Know

• Mulching vs. regular blades: These have a curved, high-lift design to chop clippings finer. They work best with a mulching plug kit (if your deck supports one) and may not discharge or bag as well as standard blades.
• Installation: Straightforward—remove the old blade, note the washer/bolt order. Use a torque wrench (typically 70-90 ft-lbs). The 5-star pattern is keyed, so alignment is simple.
• Sharpness out of box: Blades come sharp but not razor-edged. You may want to sharpen them lightly before first use for a cleaner cut.
• Common gotcha: The 5-star pattern is specific. If your spindle uses a different pattern (e.g., 4-star or diamond), these won’t fit. Always verify by comparing the center hole shape.

Should You Buy It

If you have a 42-inch Craftsman, Poulan Pro, or Husqvarna riding mower with a 5-star mounting pattern and want to switch to mulching for better lawn health, this 2-pack is a solid value. It’s affordable, well-rated, and a direct fit for common models like the LT1000 and LT2000. Skip it if you need bagging or discharge blades, or if your deck uses a different mounting pattern.