Exmark 131-3939-03 High-Lift Blade Quest E S Series 42-Inch Deck 2 Pack

What It Is

The Exmark 131-3939-03 is a 2-pack of OEM high-lift blades designed specifically for Exmark Quest and E-Series mowers with a 42-inch fabricated deck. High-lift blades create stronger airflow to improve grass clipping discharge and bagging performance, ideal for thick or damp grass.

Fitment & Compatibility

Before buying, confirm:

• Deck size: Fits only 42-inch fabricated decks (not stamped decks).
• Mower models: Exmark Quest (S/N 500,000+), Quest E-Series, and some Lazer Z E-Series with the same deck. Check your model number and serial number.
• OEM vs aftermarket: This is Exmark OEM; aftermarket copies may have different hole patterns or thickness.
• Measurements: Blade length is 21 inches (center hole to tip), with a 7/16-inch center hole and 2.5-inch offset. Verify your existing blade matches.
• Use Exmark’s online parts lookup (or your owner’s manual) with your mower’s serial number to confirm fitment – mismatched decks (e.g., 42-inch stamped) will not work.

Key Things to Know

• Quality: OEM blades are heat-treated and balanced for longer life and better cut quality than most aftermarket options.
• Installation: Easy swap with a socket wrench (7/16-inch or 1/2-inch, depending on nut). Torque to 70–90 ft-lbs (check manual). Lift mower safely – use jack stands or a lift.
• Common gotcha: High-lift blades increase engine load and can throw debris; avoid on dry, sandy lawns where they may scalp or wear faster.
• Performance: Best for bagging or side-discharge in tall/wet grass. For mulching, use dedicated mulching blades instead.

Should You Buy It

If you own an Exmark Quest or E-Series with a 42-inch fabricated deck and want OEM-grade durability with superior lift for bagging or wet grass, this 2-pack is a reliable, direct fit. It’s not for mulching or stamped decks – skip it if you need those.