954-04137B Deck Belt for Cub Cadet, MTD, Troy-Bilt & White Outdoor RZT 42-Inch and 50-Inch Mower Decks

Overview

This 954-04137B deck belt replacement is built for select Cub Cadet, MTD, Troy-Bilt, and White Outdoor zero-turn mower deck applications using the 954-04137B / 754-04137B belt path.

This belt also replaces 754-04137, 754-04137A, 754-04137B, 954-04137, 954-04137A, 954-04137B, 754-04047, and 954-04047 on supported applications. It is commonly associated with select Cub Cadet RZT 42-inch, MTD RZT 42-inch, Troy-Bilt Mustang / Colt 42-inch, White Outdoor / Columbia 42-inch, and select 50-inch stamped mower deck attachment paths.

Important: This listing is for one deck belt, not a multi-belt set. Do not order by deck size or mower family alone. Match your original belt number first, then confirm belt width, belt length, mower model, deck size, serial range, and belt routing before ordering.

Key Features

• Replacement deck belt for select Cub Cadet, MTD, Troy-Bilt, and White Outdoor zero-turn mower deck applications
• Primary Part Number: 954-04137B
• Also Replaces: 754-04137, 754-04137A, 754-04137B, 954-04137, 954-04137A, 754-04047, 954-04047
• Quantity Included: 1 replacement deck belt
• Length: 113.9 inches
• Width: 0.6 inch
• Thickness: 0.47 inch
• Designed for mower deck drive systems using the listed OEM belt path
• Ships as one belt only

Compatible Brands & Model Series

This belt is intended for select mower deck applications using the 954-04137B, 754-04137B, 954-04137A, 754-04137A, 954-04137, 754-04137, 954-04047, or 754-04047 replacement belt path.

Common supplier application paths include:

• Cub Cadet RZT 42-inch: select RZT-42, RZT-L42 KH, RZT-SX 42 EFI, and RZT-SX 42 KH zero-turn mower applications
• Cub Cadet stamped mower deck attachments: select 19A40013 / 19B40013 50-inch stamped mower deck paths and select 19A40014 / 19B40014 54-inch stamped mower deck attachment paths
• Cub Cadet GT 2050: select 50-inch garden tractor applications using the listed belt path
• MTD RZT / ZT: select Gold, Mastercut, RZT-42, RZT-50, ZT-L42, ZT-S42, Z6000, and ZTL7000 zero-turn mower applications
• Troy-Bilt Mustang / Colt: select Mustang, Mustang XP, Mustang Colt RZT, and Colt XP 42-inch zero-turn mower applications
• White Outdoor / Columbia: select RZT-42, ZT-42, ZT-4200, and Columbia 42-inch zero-turn mower applications

Fitment note: Supplier data also lists some John Deere LT and X300R catalog paths in the broader source text, but the replacement numbers provided for this belt are Cub Cadet / MTD belt numbers. Confirm the original belt number on your mower before using this listing for any non-MTD-family application.

Important cross-reference note: The supplied draft mentioned 954-04055 and 19A40013 / 19A40014. The detailed supplier belt list provided for this item shows 954-04047 and 754-04047, not 954-04055. The 19A40013 and 19A40014 numbers appear to be deck attachment model numbers, not replacement belt numbers.

Replaces Common Deck Belt Numbers

• Cub Cadet: 754-04137, 754-04137A, 754-04137B, 954-04137, 954-04137A, 954-04137B, 754-04047, 954-04047
• MTD: 754-04137, 754-04137A, 754-04137B, 954-04137, 954-04137A, 954-04137B, 754-04047, 954-04047

No-Dash Search Aliases

• 95404137B
• 75404137B
• 95404137A
• 75404137A
• 95404137
• 75404137
• 95404047
• 75404047

Belt Specifications

• Part Type: mower deck belt
• Primary Replacement Number: 954-04137B
• Common Cross-Reference Numbers: 754-04137, 754-04137A, 754-04137B, 954-04137, 954-04137A, 954-04137B, 754-04047, 954-04047
• Length: 113.9 inches / 2892.2 mm
• Width: 0.6 inch / 14.2 mm
• Thickness: 0.47 inch / 12 mm
• Quantity Included: 1 replacement deck belt

Before Ordering

Before ordering this deck belt, confirm:

• Your original belt number matches 954-04137B, 754-04137B, 954-04137A, 754-04137A, 954-04137, 754-04137, 954-04047, or 754-04047
• Your mower deck uses the correct belt routing
• Your mower model, deck size, and serial or model-year path match the listed application
• Your idler pulleys, spindle pulleys, belt guides, and tension spring are in good condition
• Your original belt length and width match the listed specifications
• You are ordering one belt only, not a complete deck and PTO belt set

Do not install the belt until fitment is confirmed. Installed belts may not be eligible for return.

Common Symptoms of a Worn Deck Belt

• Deck belt slips under load
• Belt squeals when the blades are engaged
• Mower leaves uneven or uncut grass
• Belt jumps off the pulley system
• Visible cracking, glazing, or fraying
• Deck vibration or poor blade speed
• Burning rubber smell near the mower deck

Installation Notes

• Park the mower on a level surface and disconnect the spark plug before working on the deck
• Take a photo of the belt routing before removing the old belt
• Confirm this is the correct deck belt path before installing
• Inspect idler pulleys, spindle pulleys, belt keepers, and the tension spring before installing the new belt
• Make sure the belt is seated fully in each pulley groove
• After installation, test the mower at low speed and listen for belt tracking issues, squealing, or vibration

Why Buy From PTO Direct USA?

• Fast USA shipping
• Fitment-first product descriptions
• Clear part-number routing for Cub Cadet and MTD mower deck repairs
• Deck parts organized by belts, blades, spindles, pulleys, and rebuild kits
• Support for homeowners, repair shops, and mower owners

Need Help Confirming Fitment?

If you are unsure whether this belt fits your mower, send us your mower model number, deck size, original belt number, serial number, and photos of your belt routing diagram, mower ID tag, and old belt before ordering.

FAQ

What does this deck belt replace?

This belt replaces 954-04137B, 754-04137B, 954-04137A, 754-04137A, 954-04137, 754-04137, 954-04047, and 754-04047 on select Cub Cadet and MTD-family mower deck applications.

What size is this belt?

This belt is listed at 113.9 inches long, 0.6 inch wide, and 0.47 inch thick. Always compare the belt size and routing to your original belt before ordering.

Is this a belt set?

No. The supplier details list this item as 1 belt. It should not be treated as a complete deck and PTO belt set unless your inventory setup intentionally bundles additional belts.

Does this belt fit Cub Cadet RZT 42-inch mowers?

This belt is commonly listed for select Cub Cadet RZT-42, RZT-L42, and RZT-SX 42 mower deck applications using the 954-04137B / 754-04137B belt path. Confirm your exact model and belt routing before ordering.

Does this belt fit Troy-Bilt Mustang or Colt 42-inch mowers?

This belt is commonly listed for select Troy-Bilt Mustang, Mustang XP, Mustang Colt RZT, and Colt XP 42-inch zero-turn mower applications using the same belt path. Confirm your mower model and original belt number before ordering.

Are 19A40013 and 19A40014 belt numbers?

No. Based on the supplied application data, 19A40013 and 19A40014 appear to be Cub Cadet stamped mower deck attachment model numbers, not replacement belt numbers.

Can I order this belt by deck size only?

No. Deck size is only a starting point. This belt appears across multiple Cub Cadet, MTD, Troy-Bilt, and White Outdoor model paths, so match the original belt number, belt size, mower model, deck size, and belt routing before ordering.

Why does my deck belt keep coming off?

A deck belt may come off because of worn idler pulleys, bad spindle bearings, weak tension springs, bent belt guides, incorrect routing, or the wrong belt size. Inspect the full deck drive system before installing a new belt.

Need other deck parts for this setup? Browse mower blades, spindle assemblies, deck pulleys and idlers, and deck rebuild kits.

Need a different belt? Browse the full mower deck belts collection.