110-6871 Deck Drive Belt for Toro 42" TimeCutter Z4200 Z4220 Z4235 Z4202 RZT420H Lawn

What It Is

The 110-6871 deck drive belt transfers power from the engine pulley to the mower deck spindles on Toro 42" TimeCutter zero-turn mowers. It’s a direct replacement for the OEM belt on Z4200, Z4220, Z4235, Z4202, and RZT420H models, designed for residential mowing.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch fabricated deck (not stamped) and uses the OEM part number 110-6871. This belt measures 1/2 inch wide by 107.5 inches long. It fits Toro TimeCutter Z4200, Z4220, Z4235, Z4202, and RZT420H models built from 2010 onward. It does not fit 44-inch, 50-inch, or 54-inch decks, nor older TimeCutter models (pre-2010) with different spindle spacing. If your original belt has a different part number (e.g., 112-2312), this belt will not work. Check your deck’s underside for a stamped model number or consult your owner’s manual.

Key Things to Know

• Quality: This is a genuine Toro OEM belt, offering better durability and fit than most aftermarket belts. Expect 2–3 seasons of regular use before wear.
• Installation: Moderate difficulty—requires removing the deck or using a tensioner release tool. Have a 3/8-inch socket and a belt routing diagram handy (often printed on the deck).
• Common gotcha: The belt must be routed with the correct twist around the idler pulley. A misrouted belt will slip or come off immediately. Watch for a sharp edge on the deck that can cut the belt if not deburred after replacement.
• Double-check: Measure your old belt’s length and width before buying. A belt that’s too short will not fit; too long will slip.

Should You Buy It

If you own a 42" Toro TimeCutter (Z4200 series or RZT420H) and need a reliable, exact-fit replacement, this belt is the right choice. It’s priced fairly for OEM quality and avoids fitment headaches of generic belts. Skip it if you need a belt for a different deck size or non-Toro mower.