Mulching Blades 103-6396 Compatible with Turf Tracer 48" Deck | 103-6391 Mower Blades Compatible with Ex Mark Lazer Z, Vantage 48" | Replace 103-6401, 103-6381, 103-6401-S | 3-Pack

What It Is

This is a 3-pack of aftermarket mulching blades designed to replace OEM blades on zero-turn mowers with a 48-inch cutting deck, specifically for Ex Mark Turf Tracer and Lazer Z models. They are intended for mulching grass clippings into fine particles that decompose quickly, reducing bagging needs.

Fitment & Compatibility

Before buying, verify your mower deck is exactly 48 inches—these blades will not fit 52” or 60” decks. Check that your model is listed: Ex Mark Turf Tracer (all series with 48” deck) and Ex Mark Lazer Z (48” Vantage, standard models). These replace OEM part numbers 103-6396, 103-6391, 103-6401, 103-6381, and 103-6401-S. Measure your existing blade length (should be ~18.5 inches), center hole diameter (typically 1 inch), and thickness (0.203 inch). Aftermarket blades may have slight weight or balance differences from OEM—always check for warping or vibration after installation.

Key Things to Know

• Installation difficulty: Moderate. Requires a socket set and torque wrench (recommended 70-90 ft-lbs). Lift the mower safely and block the deck before removing blades.
• Balance: Aftermarket blades can be slightly out of balance. Use a blade balancer before installing to avoid vibration and spindle wear.
• Mulching performance: These have a higher lift and curved design for fine clippings. Works best in dry grass; wet clippings may clump.
• Common gotchas: The 3-pack may include blades with slightly different hole sizes—verify all three match your spindle. Do not mix with standard or high-lift blades on the same deck.

Should You Buy It

Buy these if you own a 48” Ex Mark Turf Tracer or Lazer Z and want an affordable mulching option that saves you from buying OEM blades. They’re a solid value for the price, but check balance and torque carefully. Not recommended for commercial use with heavy daily cutting—OEM blades hold up better under high stress.