John Deere OEM High Lift Mower Blade 3 Pack 325 335 345 GS 25 30 45 F 620 680 687 725 735 S 2554 M135590

What It Is

This is a set of three OEM (original equipment manufacturer) high-lift mower blades from John Deere (part #M135590). Designed for 42", 48", and 54" decks on select Deere lawn tractors, the high-lift profile increases airflow for better grass clipping discharge and bagging performance, especially in thick or damp grass.

Fitment & Compatibility

• Deck size & model: Fits John Deere 42" (GS25/30/45, F620/680/687/725/735), 48" (325/335/345, S2554), and 54" (325/335/345) decks. Also compatible with select 100-series and X300/X500 models using the same deck.
• OEM vs aftermarket: This is a genuine John Deere part—exact fit, no modification needed. Aftermarket blades may require adjustment or cause balance issues.
• Measurements: Each blade is 21" long, 2.5" wide, with a 1" center hole and 0.5" offset. Confirm your deck’s spindle pattern matches before ordering.
• Check your deck model number (stamped on the deck or in your manual) to ensure compatibility. Not all 42"/48"/54" Deere decks use this blade.

Key Things to Know

• Installation difficulty: Easy—swap blades one at a time using a socket wrench or impact driver. Torque to 40–50 ft-lbs. Wear gloves (blades are sharp).
• High-lift tradeoff: Better bagging and discharge, but slightly more noise and vibration than standard blades. Not ideal for mulching; use a mulching blade kit for that.
• Durability: OEM steel holds an edge well for a season of normal use. Replace sooner if you hit rocks or roots.
• Common gotcha: These blades are sold as a 3-pack. If your deck uses two blades (e.g., 42" models), you’ll have a spare. For three-blade decks (48"/54"), you get a full set.

Should You Buy It

Buy this if you own a compatible John Deere tractor and want guaranteed fit, reliable performance, and better discharge/bagging than standard blades. It’s a fair price for OEM quality—skip cheap aftermarket alternatives that may vibrate or dull fast.