46" Deck Mower Belt 954-04325 754-04325 Compatible with Cub Cadet MTD RZT-L46 RZT46 RZT-S46 46" Deck Mower, for Cub Cadet MTD 46" Deck Mower Belt 954-04325 754-04325 Simplicity 1758984YP, 1/2" X 125"

What It Is

This is a 46-inch deck mower belt (1/2" x 125") designed to transfer power from the engine pulley to the deck blades on specific zero-turn and lawn tractor models from Cub Cadet, MTD, and Simplicity. It’s a direct replacement for OEM part numbers 954-04325, 754-04325, and Simplicity 1758984YP.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: This belt is for 46-inch cutting decks only—not 42", 50", or 54".
• Model compatibility: Confirmed fit on Cub Cadet RZT-L46, RZT46, RZT-S46, and MTD models using these OEM numbers. Also fits Simplicity 1758984YP. Check your owner’s manual or current belt part number against 954-04325, 754-04325, or 1758984YP.
• Measurements: The belt is 1/2" wide and 125" long. Measure your old belt (laid flat, not stretched) to confirm length. If it’s off by even 1/2", it won’t tension properly.

Never assume “fits 46-inch deck” means it fits your model—belt routing varies by deck design (e.g., stamped vs. fabricated). Cross-reference your mower’s model number (found under seat or on frame) with the listed compatible units.

Key Things to Know

• Quality: This is an aftermarket belt, not OEM Cub Cadet. At $9.89, it’s a budget option—expect average lifespan (1-2 seasons with regular use) compared to OEM belts.
• Installation difficulty: Moderate. You’ll need to remove the deck or at least the belt guard. Route it exactly as the old one was—take a photo before removal. A belt tensioner tool (or a pry bar) is helpful.
• Common gotchas: The belt may be slightly tighter or looser than OEM due to manufacturing tolerances. Check blade engagement and deck vibration after install. If the belt slips or squeals, double-check routing and tensioner condition.
• No warranty info listed: Treat as a no-frills replacement. If your deck has bent pulleys or a worn tensioner spring, replace those first—a new belt won’t fix underlying issues.

Should You Buy It

Buy this belt if you need a quick, cheap replacement for a Cub Cadet or MTD 46-inch zero-turn or lawn tractor and you’re comfortable with basic DIY installation. Skip it if you want OEM durability, have a Simplicity model that requires exact specs, or if your deck has complex belt routing—invest in the OEM belt instead.