OCPTY High Lift Blade 38 inch Deck Mower Blades for John Deere: AM100945, AM100991, AM137324, AM137326, AM141039, AM141041, M153118, M83459, M84472, N154159; for Lesco: 050537,2 pack

What It Is

This is a set of two high-lift mower blades designed for 38-inch cutting decks, intended to replace OEM parts on John Deere and Lesco commercial walk-behind mowers. The high-lift profile increases airflow under the deck, improving grass clipping discharge and bagging performance compared to standard or low-lift blades.

Fitment & Compatibility

Deck size must be exactly 38 inches – these blades will not fit 36-inch, 42-inch, or other deck widths. Check your deck model number, not just the mower brand.

Direct OEM replacements for:

• John Deere: AM100945, AM100991, AM137324, AM137326, AM141039, AM141041, M153118, M83459, M84472, N154159
• Lesco: 050537

Before buying, measure your existing blade:

• Overall length: approximately 19-3/8 inches (center hole to tip)
• Center hole diameter: 1 inch
• Width: 2-1/2 inches
• Thickness: 0.203 inches (approx. 13 gauge)

Common mower models that use these: John Deere JS38, JS40, JS45, JS48, LX277, LX280; Lesco 483000, 483400 series. Verify your specific model number against the OEM part numbers above.

Aftermarket note: OCPTY is a third-party manufacturer. Quality and balance may vary from OEM. Check blade balance before installation.

Key Things to Know

• High-lift blades increase engine load – your mower must have adequate horsepower (typically 5-7 HP minimum) to spin them effectively without bogging.
• Installation requires a torque wrench – tighten center bolt to 50-60 ft-lbs (check your mower manual). Overtightening can strip the spindle or blade adapter.
• Check for deck clearance – high-lift blades sit slightly lower than standard blades. Ensure your deck has enough clearance (typically 1-1/2 to 2 inches) to avoid scalping or hitting the ground on uneven terrain.
• Balance before use – even new aftermarket blades can be out of balance. Use a blade balancer to prevent vibration that can damage the spindle bearings.

Should You Buy It

If you have a 38-inch John Deere or Lesco walk-behind mower and need better bagging or discharge performance, these high-lift blades are a solid budget-friendly option. Avoid them if your deck is smaller than 38 inches, your mower is underpowered, or you primarily mulch and don’t need aggressive lift. For the price, they’re worth trying if you’re willing to check balance and install correctly.