Grasscool 54 inch Mower Mulching Blades Replace Cub Cadet 942-0677B for RZT54 S54 L54 GT1554 GTX1054 SLT1554 LT1554 LTX1054 SLTX1054 54'' Deck Zero Turn Lawn Tractor

What It Is

This is a set of three mulching blades designed for 54-inch Cub Cadet zero-turn and lawn tractor mower decks. They replace OEM part number 942-0677B and are intended for fine grass clipping mulching rather than side discharge or bagging.

Fitment & Compatibility

Before buying, confirm your mower has a 54-inch deck and uses three blades. Compatible models include Cub Cadet RZT54, S54, L54, GT1554, GTX1054, SLT1554, LT1554, LTX1054, and SLTX1054. Measure your existing blade length—these are 18.25 inches long with a 1-inch center hole and a 0.25-inch offset. If your OEM blade is the same dimensions, these will fit. They are aftermarket replacements for 942-0677B, so verify your current part number matches.

Key Things to Know

• Quality vs. OEM: Made from heat-treated steel, but some users report slightly thinner gauge than factory blades. For heavy-duty or rocky terrain, OEM may last longer.
• Installation: Straightforward bolt-on swap. Use a torque wrench—spec is 70-90 ft-lbs. Reuse your existing center bolt and washer.
• Sharpness: Arrive sharp but may need a touch-up after first use on thick grass. Sharpen with a file or grinder.
• Mulching performance: Designed for fine clippings; not ideal for bagging or side discharge. Expect some clumping in wet grass.

Should You Buy It

If you own one of the listed Cub Cadet models with a 54-inch deck and primarily mulch grass, this is a solid budget-friendly alternative to OEM blades. It’s a good value for residential use on well-maintained lawns, but avoid it for commercial or rough-duty applications where thicker, pricier blades are worth the extra cost.