103-6402 Blade Compatible with Ex Mark 52" Deck Lazer Z Turf Tracer Pioneer, High Lift Mower Blade Replaces 103-6402-S 103-6382 103-6387-S to ro 109-6873, 18" Length 15/16" Center Hole, 3 Pack

What It Is

This is a set of three high-lift replacement blades designed for 52-inch Ex Mark commercial zero-turn mowers (Lazer Z, Turf Tracer, Pioneer). High-lift blades create stronger suction for better grass clipping discharge and bagging performance.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Only for 52-inch Ex Mark decks. Will not fit 48", 60", or 72" decks.
• Blade dimensions: 18" length, 15/16" center hole, 3" width. Measure your current blade to confirm.
• OEM cross-references: Replaces Ex Mark part numbers 103-6402, 103-6402-S, 103-6382, 103-6387-S, and 109-6873. Not a direct replacement for standard or low-lift blades.

Compatible models include: Lazer Z, Lazer Z HP, Turf Tracer, Turf Tracer HP, Pioneer, and most Ex Mark 52" decks from the 2000s onward. Check your deck’s blade spindle bolt pattern (usually 5/8" or 3/4" hex) before installing.

Key Things to Know

• High-lift design: Produces more lift and airflow than standard blades. Excellent for bagging or side discharge, but can cause clumping in wet grass. Not ideal for mulching.
• Installation: Straightforward bolt-on replacement. Requires a torque wrench (factory spec: 70-90 ft-lbs). Use anti-seize on spindle bolts to prevent seizing.
• Durability: Aftermarket blade, not OEM. Typically made from hardened steel but may not last as long as genuine Ex Mark blades in heavy commercial use. Check for balance out of the box.
• Common gotcha: If your deck has a baffle kit or mulch plug, high-lift blades may cause excessive wear or vibration. Confirm your deck setup before buying.

Should You Buy It

If you own a 52-inch Ex Mark zero-turn and need aggressive lift for bagging or side discharge, this is a solid budget-friendly option. Not for mulching or residential mowers. For light commercial or homeowner use, it’s a good value; for daily commercial duty, OEM blades may last longer.