120-3335 Synchronous Belt Replacement for Toro TimeMaster 30 inch Lawn Mower Parts, 44" x 3/4" Deck Timing Belt Replaces 265-610, Fits Models 20199 20200 20975 21199

What It Is

This is a synchronous timing belt for the Toro TimeMaster 30-inch lawn mower deck. It drives the dual-blade system, keeping both blades spinning in sync for a clean, even cut. It’s a direct replacement for the OEM Toro part 265-610.

Fitment & Compatibility

Before buying, verify your mower’s model number — this belt fits Toro TimeMaster models 20199, 20200, 20975, and 21199 only. It measures 44 inches in circumference and 3/4 inch wide. If your deck is a 30-inch TimeMaster with a twin-blade setup, this is likely the correct belt. Do not use on 21-inch or 42-inch decks, or on any non-TimeMaster Toro mower. Aftermarket belts like this one are typically identical in dimensions and material to OEM, but always double-check the belt’s length and width against your old belt before installing.

Key Things to Know

• Quality: This aftermarket belt is rated highly (4.8/5) and matches OEM specs in tension and durability. It should last as long as the original.
• Installation: Moderate difficulty — you’ll need to remove the deck, release belt tension, and route the belt around two pulleys and a tensioner. A flathead screwdriver and a socket set are usually enough.
• Common gotcha: The belt must be threaded correctly between the blade pulleys and the tensioner. If it slips or makes noise after install, re-check routing and tension. Also, inspect the tensioner spring and pulleys for wear while you’re in there.
• No special tools required, but a belt installation tool or a long screwdriver helps with the tensioner.

Should You Buy It

If you own a Toro TimeMaster 30-inch mower (models 20199, 20200, 20975, or 21199) and your deck belt is worn, cracked, or slipping, this $10.39 belt is a solid, budget-friendly replacement. It’s a direct fit, well-reviewed, and much cheaper than the OEM part. Ideal for DIY homeowners who want to restore cutting performance without paying dealer prices.