Terre Products, 2 Pack High Lift Lawn Mower Blades, 42 Inch Deck, Compatible with Craftsman LT1000, Ariens, Husqvarna, Poulan, Snapper, Sears, Replacement for 138971, 134149, 138498, 532138971

What It Is

A pair of high-lift replacement blades designed for 42-inch cutting decks, built to increase airflow and improve grass clipping discharge, especially in bagging or side-discharge setups. These fit a wide range of popular lawn tractors, including Craftsman LT1000, Ariens, Husqvarna, Poulan, Snapper, and Sears models.

Fitment & Compatibility

Before buying, confirm your deck measures exactly 42 inches from blade tip to blade tip. These blades replace OEM part numbers 138971, 134149, 138498, and 532138971. Measure your existing blade’s length (should be 20.5 inches), center hole diameter (usually 1 inch), and spindle hole pattern. Note: high-lift blades may not fit low-deck clearance mowers—check that your deck has at least 3 inches of vertical clearance to avoid blade strike. Verify your mower’s model number against the seller’s compatibility list; universal fit claims can miss subtle spindle differences.

Key Things to Know

• Quality: Made from heat-treated steel with a corrosion-resistant coating. Edge holds up well in normal residential grass, but avoid rocks and heavy debris—high-lift blades are more prone to bending on impact.
• Installation: Straightforward with basic tools (socket wrench, torque wrench). Torque blade bolts to 70–90 ft-lbs. Use thread-locker if bolts are reused.
• Gotchas: High-lift blades increase engine load and may require a slightly slower ground speed to avoid bogging. They also create more noise and vibration than standard blades. Not ideal for mulching—look for low-lift or mulching blades for that purpose.
• Balance: Always balance new blades before installation. Unbalanced blades cause vibration, damage spindles, and leave an uneven cut.

Should You Buy It

Buy these if you have a 42-inch deck tractor that matches the listed brands and you primarily bag or side-discharge grass. They’re a solid upgrade for standard blades, offering better lift and cleaner cuts in thick grass. Skip them if you mulch often or have a low-clearance deck.