3X Anti-Scalp Mower Deck Wheel Roller Bearing Pulley Shoulder Bolt Brass-Plated w/Hex Flange Nut Compatible with Exmark Pioneer Quest for Toro TimeCutter Titan 112-3977 104-8301

What It Is

This is a set of three anti-scalp deck wheels with brass-plated shoulder bolts and hex flange nuts, designed to prevent the mower deck from scalping uneven terrain. It’s intended for zero-turn mowers like Exmark Pioneer/Quest and Toro TimeCutter/Titan models.

Fitment & Compatibility

Before buying, check these specifics:

• OEM Part Numbers: Cross-reference with Toro 112-3977 or 104-8301. This set is aftermarket, not genuine OEM.
• Deck Size: Fits 42- to 60-inch decks (common on Exmark and Toro ZTRs), but verify your deck’s wheel mounting hole spacing (typically 5/16” or 3/8” bolt diameter).
• Bolt Specs: Shoulder bolt length and thread pitch must match your deck bracket. Measure the existing bolt’s shoulder length (usually ~1” to 1.25”) and thread size (likely 3/8-16 or 5/16-18).
• Wheel Diameter: Typically 3” to 4” wheels. Confirm the wheel OD clears your deck shell and doesn’t interfere with blades at full height.
• Model Check: Not all Exmark or Toro ZTRs use the same wheel mount—check your owner’s manual or existing part number.

Key Things to Know

• Quality Concern: Brass-plated steel bolts resist rust better than plain steel, but the plating can wear off over time. Grade 5 or 8 steel is stronger.
• Installation Difficulty: Easy (remove old nut/bolt, swap wheel, tighten). Use thread locker if bolts back out.
• Common Gotcha: Wheels may be slightly smaller or larger than OEM, affecting deck clearance. Test by raising deck to full height and spinning wheels by hand.
• Nut Included: Hex flange nut is pre-assembled, but check if it’s nylon-lock (prevents loosening) or standard.

Should You Buy It

This is a budget-friendly option if you need three replacement anti-scalp wheels for a Toro or Exmark ZTR and don’t want to pay OEM prices. However, with only 3 reviews and a 3.6 rating, quality may vary—verify fitment meticulously and expect possible durability differences from OEM parts. Best for light residential use; skip for commercial or heavy-duty mowing.