135-1873 V-Belt 5/8" x 189" for Titan and Z Master Riding Lawn Mowers 74452 74467 74492 74494 74496 74497 76601 76602 77260 77284 77287 77293 77299 with 60 Inch Deck

What It Is

This is a 5/8-inch wide, 189-inch long V-belt designed to drive the deck blades on select Titan and Z Master zero-turn riding mowers with a 60-inch cutting deck. It replaces OEM part 135-1873 and is used for mower models including 74452, 74467, 74492, 74494, 74496, 74497, 76601, 76602, 77260, 77284, 77287, 77293, and 77299.

Fitment & Compatibility

Before buying, verify your mower’s model number (found on the frame or under the seat) matches one of the listed numbers. Confirm your deck is exactly 60 inches—belts for 48- or 72-inch decks will not work. Measure the old belt’s width (should be 5/8”) and length (189 inches end-to-end). This is an aftermarket belt, not OEM Toro/Exmark, so check that your mower’s belt routing and pulley configuration are stock. If your machine has been modified or uses a different belt tensioner, this may not fit.

Key Things to Buy

• Quality is adequate for residential/semi-commercial use, but may wear faster than OEM belts under heavy daily mowing.
• Installation is moderate difficulty—requires removing the deck belt cover, routing around idlers and pulleys, and using a tension release tool.
• Common gotcha: the 189-inch length is critical; a belt even 1-2 inches off will slip or be too tight. Measure your old belt before ordering.
• Check pulley condition—worn or rusty pulleys will shorten belt life regardless of brand.

Should You Buy It

If you need a budget-friendly replacement for a 60-inch Titan or Z Master deck and mow less than 10 hours per week, this belt is a solid choice. For commercial operators or those wanting maximum durability, consider an OEM belt instead.