103-6401 103-6401-S High Lift Heavy Duty Blade Compatibles with Ex Mark 48" Deck, 103-6381 103-6391 103-6396 48 inch Hi Lift Mower Blade Compatibles with Ex Mark Lazer Z, Turf Tracer, 3 Pack

What It Is

This is a 3-pack of high-lift heavy-duty mower blades (model 103-6401/103-6401-S) designed for Ex Mark 48-inch decks, including Lazer Z and Turf Tracer models. The high-lift design increases airflow for superior grass clipping discharge in bagging or side-discharge applications.

Fitment & Compatibility

Before buying, confirm your deck is exactly 48 inches (measure deck housing width, not cut width). These blades replace OEM Ex Mark part numbers 103-6381, 103-6391, and 103-6396. They fit Ex Mark Lazer Z, Turf Tracer, and other models with a 48-inch fabricated or stamped deck using three 20.5-inch blades. Measure your existing blade length, center hole diameter (usually 1-inch), and thickness (typically 0.204-0.250 inches). Aftermarket part number 103-6401-S is the direct cross-reference. Do not assume fit for other brands—check spindle bolt pattern and blade offset.

Key Things to Know

• Quality concerns: With a 3.4 rating from only 6 reviews, expect possible balance or durability issues. Inspect each blade for warping or uneven edges before installation.
• Installation difficulty: Easy—requires a socket wrench and torque wrench (recommended 70-90 ft-lbs). Always lift mower deck safely and remove spark plug wire.
• High-lift tradeoff: Better bagging and discharge, but higher power draw and faster wear in dusty or sandy conditions. Not ideal for mulching.
• Common gotcha: These blades are heavier than OEM stamped blades. Verify your deck spindle bearings can handle the extra weight and that blade clearance is sufficient when spinning.

Should You Buy It

Buy this if you need a budget-friendly 3-pack of high-lift blades for a 48-inch Ex Mark deck primarily used for bagging or side-discharge mowing, and you’re comfortable with potential quality variance. Skip it if you require OEM fit/finish, need mulching blades, or have a different brand/model deck—buy OEM or a higher-rated aftermarket brand instead.