Troy-bilt 742-04403-0637 Mower Blade 21.18 Inches

Product Description

The TROY-BILT 742-04403-0637 is a 21.18-inch replacement mower blade designed for residential walk-behind lawn mowers. This 2-in-1 blade is engineered to handle both mulching and side-discharge cutting operations, making it a versatile OEM-style replacement for routine blade maintenance. Lawn equipment technicians and experienced DIYers install this blade as part of seasonal service or when a worn or damaged blade affects cut quality. At 21.18 inches in length, the blade is sized for standard single-blade walk-behind mower decks common in residential applications.

This blade fits TROY-BILT walk-behind mowers equipped with a compatible 21-inch cutting deck. It is suited for residential lawn maintenance applications where the operator requires a dual-function blade capable of discharging clippings to the side or recirculating them for mulching. Installation is performed during scheduled blade replacement intervals or when the cutting edge shows visible wear, damage, or loss of balance.

Key Features

• 21.18-inch blade length sized for standard single-blade 21-inch residential mower decks
• 2-in-1 design supports both mulching and side-discharge cutting modes
• OEM-style replacement for direct fitment on compatible TROY-BILT walk-behind mowers
• Intended for routine seasonal service and blade replacement maintenance

Compatibility

Designed as an OEM-style replacement blade for TROY-BILT walk-behind mowers with a 21-inch cutting deck. Verify the deck model and blade mounting configuration before installation to confirm fitment.

Installation Notes

Blade replacement should be performed by a qualified lawn equipment technician or a knowledgeable operator following the mower manufacturer's service guidelines. Disconnect the spark plug wire before removing or installing any blade to prevent accidental engine start. Use appropriate blade-holding tools and torque the blade bolt to the specification listed in the equipment service manual. Wear heavy gloves when handling mower blades, as edges may be sharp even when worn.

Technical Specifications

• Blade Length: 21.18 inches
• Blade Type: 2-in-1 Mulching and Side-Discharge

Standard Information

• Brand: TROY-BILT
• Manufacturer Part Number: 742-04403-0637