CUB CADET 490-501-C082 Deck Drive Belt 46" Decks Ultima ZT1-46 Zero-Turn Lawn Mowers

What It Is

This is a genuine OEM deck drive belt for Cub Cadet 46-inch cutting decks, specifically for the Ultima ZT1-46 zero-turn mower. It transfers power from the engine pulley to the deck spindles to spin the blades.

Fitment & Compatibility

• Exact fit: Cub Cadet Ultima ZT1-46 (model series 17AWA2CQ, 17AWA2CQ100, 17AWA2CQ200, and similar).
• Deck size: 46-inch fabricated or stamped decks.
• OEM part number: 490-501-C082. Cross-references to Cub Cadet 490-501-C082, 490-501-C082A, and some AYP/MTD equivalents. Do not assume this fits other 46-inch decks (e.g., RZT, XT1, or older models) without checking your model number.
• Measurements: 1/2" wide, 96.5" effective length (Kevlar-reinforced). Measure your old belt end-to-end (not looped) to confirm.
• Before buying: Verify your mower’s model number (stamped under seat or on frame). This belt is not for 42-inch or 54-inch decks.

Key Things to Know

• Quality: OEM construction with Kevlar cord—lasts longer than most aftermarket belts under heavy use. No premature stretching or slipping reported.
• Installation: Moderate difficulty. Requires removing deck or using a spring-loaded idler. Have a 1/2" ratchet and a belt routing diagram handy (check your manual or deck sticker).
• Gotcha: If your old belt snapped, inspect all pulleys for damage or debris before installing a new one. A bent spindle or seized bearing will kill this belt fast.
• Price point: At $61, it’s mid-range. Cheaper aftermarket belts ($25–$35) often wear out in one season; this OEM belt typically lasts 2–3 seasons with normal use.

Should You Buy It

If you own a Cub Cadet Ultima ZT1-46 and want a belt that fits perfectly and lasts, this is your best bet. It’s not cheap, but it’s cheaper than replacing a deck due to a failed aftermarket belt. Skip it if you have a different deck size or model—check your part number first.