UDC Parts 954-04219 Mower Deck Belt Replacement for Cub Cadet 46 Inch LTX 1045 LTX 1046 Troy Bilt Horse XP Bronco Craftsman T1600 T140 754-04219 CMXGZAM501009 OCC-754-04219 /Aramid Cord /103.4 inches

What It Is

This is a 103.4-inch Aramid cord deck belt designed to drive the mower blades on 46-inch cutting decks. It’s a direct replacement for OEM part 754-04219 and fits select Cub Cadet, Troy-Bilt, Craftsman, and other MTD-built lawn tractors.

Fitment & Compatibility

Before buying, verify your mower has a 46-inch stamped steel deck and uses OEM belt number 754-04219 or cross-references like CMXGZAM501009 or OCC-754-04219. This belt fits Cub Cadet LTX 1045, LTX 1046, Troy-Bilt Horse XP, Bronco, and Craftsman models T1600, T140. Do not assume fit based on brand alone—check your owner’s manual or old belt part number. Measure your old belt length (end-to-end, not loop) to confirm 103.4 inches. This is not compatible with 42-inch or 50-inch decks, or zero-turn mowers.

Key Things to Know

• Aramid cord construction is more heat- and wear-resistant than standard rubber belts, but it may be slightly stiffer during installation.
• Installation difficulty is moderate—you’ll need to release deck tension by removing a spring or idler pulley, then route the belt per your deck diagram (often printed on the deck itself).
• Common gotcha: The belt can flip or twist if not seated perfectly in all pulley grooves. Double-check routing before tightening tension.
• Over 12,000 reviews with 4.3 stars indicate strong reliability, but a small number report premature wear if used on decks with misaligned or worn pulleys.

Should You Buy It

If you have a 46-inch Cub Cadet, Troy-Bilt, or Craftsman tractor listed above and need a solid, affordable replacement for OEM 754-04219, this belt is a proven choice. It’s best for DIY owners who want a durable upgrade over standard rubber belts without paying OEM markup. Avoid it if your deck has bent spindles or worn pulleys—fix those first to prevent early belt failure.