2-Pack High-Lift Mulching Mower Blades with Bolts and Washers Replacement for John Deere AM130172 AM126023 AM128013 Fits 42" Deck LT155 LT160 LT166 LX255

What It Is

This is a 2-pack of high-lift mulching blades designed to replace John Deere OEM parts (AM130172, AM126023, AM128013). They fit 42-inch cutting decks on select Deere lawn tractors and are suited for mulching grass clippings into fine particles for lawn nutrition.

Fitment & Compatibility

• Deck size: 42-inch (must confirm your deck is exactly 42", not 44" or 48").
• Exact models: LT155, LT160, LT166, LX255. Also fits other Deere 42" decks using AM130172 or AM126023 blades—check your owner’s manual.
• OEM cross-reference: Replaces AM130172, AM126023, AM128013. Not compatible with older AM108109 blades (different center hole size).
• Measurements: Blade length 21" (center hole to tip), width 2.5", center hole 7/8" diameter with a 1/4" offset. Bolts and washers included (5/16" x 1" grade 8 bolts).
• Quick check: Measure your current blade from tip to tip; if it’s 21" and uses a 7/8" center hole, these fit.

Key Things to Know

• High-lift design increases airflow for better mulching but creates more drag—may strain smaller engines (under 15 HP) on thick grass.
• Installation: Easy with a socket wrench and torque to 70-80 ft-lbs. Use included bolts; old bolts may be worn.
• Gotcha: High-lift blades can cause clumping in wet grass—only use for dry mulching or bagging.
• Quality: These are aftermarket, not OEM. Steel thickness (0.1875") matches Deere originals, but heat treatment may vary—expect 2-3 seasons with normal use.

Should You Buy It

If you own a John Deere LT155, LT160, LT166, or LX255 with a 42" deck and want improved mulching performance without paying OEM prices ($30+ per blade), this pack is a solid value. Avoid if you have a smaller engine (under 15 HP) or need standard lift blades for side-discharge mowing.