Exmark 109-9127 Wheel and Tire Lazer Z AC AS XP XS Front Runner DS E S X Z Series

What It Is

The Exmark 109-9127 is an OEM wheel and tire assembly designed for the front caster position on Exmark zero-turn mowers, specifically the Lazer Z, Lazer Z AC, Lazer Z AS, Lazer Z XP, Lazer Z XS, Front Runner, DS, E, S, and Z Series models. It replaces a worn or damaged front caster wheel to maintain proper mower handling and tire wear.

Fitment & Compatibility

Before buying, confirm your mower model and series (check the serial number plate under the seat or on the frame). This wheel fits the front caster position only—it is not for rear drive wheels. Measure the existing tire diameter (likely 13 inches) and verify the axle hole size (typically 5/8 inch on these models). Exmark uses a specific offset and bearing setup, so aftermarket alternatives may not align correctly. If your mower has a different deck size (48” vs 60”), the caster wheel is the same across these series, but double-check that your unit isn’t an older or non-standard variant.

Key Things to Know

• Quality concern: The low rating (2.7/5) suggests some buyers report premature bearing failure or tire separation. Inspect the wheel for cracks or wobble immediately after installation.
• Installation difficulty: Moderate—requires a jack or blocks to lift the front, a socket/ratchet to remove the bolt, and possibly a hammer to free the old wheel. No special tools needed.
• Common gotcha: The included hardware may not match all mower years. Keep your original bolt and washer if the new ones don’t fit. Also, the tire is typically foam-filled (no flat), so don’t expect to add air.
• OEM vs aftermarket: This is a genuine Exmark part, so fitment is guaranteed for listed models, but cheaper aftermarket options exist (e.g., Oregon or Stens) with similar specs. Check reviews for those alternatives if cost is a concern.

Should You Buy It

Buy this if you own one of the listed Exmark models and need a direct OEM replacement for a front caster wheel, especially if you want to avoid fitment guesswork. Skip it if you’re on a tight budget or can confirm an aftermarket wheel matches the axle size and offset—many users report better value from third-party options with similar durability. For commercial use, the OEM price may be worth it for guaranteed compatibility, but check the wheel for defects upon arrival.