CUB CADET 954-04045 PTO Deck Drive Belt GT2148 LT1040 LT1042 Tractors RZT17 RZT42 Zero-Turns

What It Is

This is the OEM PTO (power take-off) deck drive belt for select Cub Cadet lawn tractors and zero-turn mowers. It transfers engine power to the mower deck blades, and is designed for 42-inch and 48-inch cutting decks on models like the GT2148, LT1040, LT1042, RZT17, and RZT42.

Fitment & Compatibility

Before buying, confirm your machine’s model and deck size. This belt fits:

• Lawn tractors: GT2148, LT1040, LT1042 (and many LT1000/GT2000 series with 42” or 48” decks)
• Zero-turn mowers: RZT17, RZT42 (and some RZT50 models – double-check your deck’s belt routing)
• OEM part number: 954-04045 (cross-references to 754-04045 on older decks)
• Measurements: 1/2-inch width, 96.5-inch effective length (confirm with a tape measure if replacing an old belt)
• Not compatible with 50-inch or 54-inch decks, or with older IH/Cub Cadet models using a different belt system.

Key Things to Know

• Quality: OEM belt, not aftermarket. Should last 2-3 seasons with normal residential use, but reviews note occasional premature wear if deck spindles are stiff or misaligned.
• Installation difficulty: Moderate. You’ll need to remove the deck and route the belt around pulleys, idlers, and the PTO clutch. A diagram is helpful – take a photo before removing the old belt.
• Common gotcha: The belt is directional on some zero-turn models. Check the arrow on the belt or the deck’s belt routing decal – installing backward can cause slipping or rapid wear.
• Check your spindles and idler pulleys before installing. Worn bearings or a stuck idler will kill a new belt fast.

Should You Buy It

If you own one of the listed Cub Cadet tractors or zero-turns and need a direct OEM replacement for a 42” or 48” deck, this is the correct belt. It’s not cheap, but it’s the right fit and quality for most residential users. If your machine has a different deck size or you’re on a tight budget, consider measuring first and looking for an aftermarket cross-reference.