8TEN LawnRAZOR Blade for Cub Cadet LT-2138 2146 1515 1525 2130 2135 2146 38" Deck 759-3829 742P3032 (Mulching) 2 Pack

What It Is

The 8TEN LawnRAZOR Blade is a mulching blade set designed for Cub Cadet LT-2138, 2146, 1515, 1525, 2130, 2135, 2146 mowers with a 38-inch deck. It replaces OEM part numbers 759-3829 and 742P3032, sold as a 2-pack for simultaneous replacement.

Fitment & Compatibility

Before buying, verify your mower has a 38-inch cutting deck – measure deck width if unsure. This blade fits Cub Cadet LT series models listed above, but also works with some MTD and Troy-Bilt tractors using the same spindle pattern. Check your current blade’s length (approx. 18 inches), center hole size (1 inch), and offset (0.25 inch). Compare to original OEM 759-3829 or 742P3032. If your deck uses a different blade pattern (e.g., 42-inch or 46-inch), this won’t fit.

Key Things to Know

• Mulching vs. regular: These blades have a curved, multi-surface design to chop clippings finer. Not ideal for bagging or side-discharge use.
• Installation: Medium difficulty – you’ll need a socket wrench and torque wrench (recommended 70-90 ft-lbs). Lift deck safely, use a block to prevent rotation.
• Balance check: After mounting, spin blade by hand to ensure it doesn’t wobble. Imbalance can cause vibration and damage spindles.
• Sharpness: Pre-sharpened out of box, but dull faster than standard blades in sandy or wet grass. Expect 15-25 hours before needing sharpening.

Should You Buy It

Buy if you own a compatible Cub Cadet 38-inch deck and want fine mulching performance without bagging. At $35.95 for a 2-pack with a 4.7-star rating, it’s a solid value for DIY owners who prioritize lawn appearance and don’t mind medium installation effort. Skip if you need bagging or side-discharge blades.