54-Inch Deck Rebuild Kit for Cub Cadet RZT-L54 KH, RZT-S54 & Mustang 54 XP | 954-04329 Belt

Overview

This 54-inch deck rebuild kit is built for select Cub Cadet RZT-L54 KH, Cub Cadet RZT-S54, Craftsman Z6600, Troy-Bilt Mustang 54 XP, Columbia ZT-L54, and related 54-inch MTD-built zero-turn mower decks using the listed belt, blade, and spindle part numbers.

The kit is intended for the 918-05137 / 618-05137 spindle path, the 942-0677 / 742-0677 blade path, and the 954-04329 / 954-04329A deck belt path.

This is a good option when your 54-inch zero-turn deck has noisy spindle bearings, worn blades, a slipping belt, uneven cut quality, deck vibration, or multiple deck parts that need to be replaced at the same time.

Important: Match your mower model, deck size, blade count, and original deck part numbers before ordering. Several Cub Cadet and MTD 54-inch decks use the same belt family but different spindle and blade combinations.

Kit Includes

• 3 spindle assemblies
• 3 mower blades
• 1 deck drive belt

Compatible Brands & Model Series

This deck rebuild kit is intended for select 54-inch MTD-built zero-turn mower decks using the listed replacement numbers.

• Cub Cadet: select RZT-L54 KH and RZT-S54 54-inch zero-turn mower decks
• Craftsman: select Z6600 applications using the listed part-number path
• Troy-Bilt: select Mustang 54 XP applications using the listed part-number path
• Columbia: select ZT-L54 54-inch zero-turn applications
• MTD-built decks: select 54-inch decks using the 918-05137 spindle, 942-0677 blade, and 954-04329 belt path

Fitment note: Model names are provided as fitment clues. Always confirm your original belt, blade, and spindle numbers before ordering.

Fits Select Models

• Cub Cadet RZT L54 KH: 17AFCACK209 — 2013
• Cub Cadet RZT-S54: 17WFCBDK010 — 2013
• Craftsman: Z6600
• Troy-Bilt: Mustang 54 XP
• Columbia: ZT-L54 54-inch Zero Turn Tractor — 2014

Model note: RZT, RZT-L, and RZT-S model families can have deck changes by production code. Match the original part numbers whenever possible.

Replaces Common Deck Belt Numbers

• Cub Cadet / MTD: 954-04329, 954-04329A

Belt Size: 5/8 inch x 148 inches

Belt note: This belt number also appears on other 54-inch deck kits, but the spindle and blade paths may be different. Do not order by belt number alone.

Replaces Common Blade Numbers

• Cub Cadet / MTD: 742-0677, 742-0677A, 742-0677B, 942-0677, 942-0677A, 942-0677B, 942-04338-0684
• Toro Reference: 112-0931

Blade note: This kit uses the 742-0677 / 942-0677 blade path for select 54-inch decks. Confirm your blade length, center hole style, blade count, and original blade number before ordering.

Replaces Common Spindle Assembly Numbers

• MTD / Cub Cadet: 618-05137, 918-05137
• Toro Reference: 119-8445

Spindle Specs: 6-3/4 inch spindle height with 5-3/8 inch pulley outside diameter.

Spindle note: This kit uses the 918-05137 / 618-05137 spindle path. Do not confuse it with similar 54-inch Cub Cadet kits using the 918-06978 spindle path or the 918-04125 / 918-04126 spindle path.

Before Ordering

Before ordering this 54-inch deck rebuild kit, confirm:

• Your mower uses a 54-inch 3-blade deck
• Your mower is in the listed Cub Cadet RZT-L54 KH, RZT-S54, Craftsman Z6600, Troy-Bilt Mustang 54 XP, or Columbia ZT-L54 model path
• Your original belt number matches 954-04329 or 954-04329A
• Your blade numbers match the 742-0677 / 942-0677 blade path
• Your spindle numbers match the 618-05137 / 918-05137 spindle path
• Your spindle height and pulley OD match the listed specifications
• Your deck shell, belt guides, spindle mounting holes, pulleys, and tension system are in usable condition

Do not install parts until fitment is confirmed. Installed deck parts may not be eligible for return.

Common Symptoms This Kit Helps Fix

• Noisy spindle bearings
• Deck vibration
• Uneven cut quality
• Dull, bent, cracked, or worn blades
• Deck belt slipping, squealing, or jumping off
• Blade wobble or bearing play
• Worn spindle assemblies
• Multiple deck parts worn at the same time

Installation Notes

• Park the mower on a level surface and disconnect the spark plug before working on the deck
• Take photos of the belt routing before removing old parts
• Inspect the deck shell for cracks, wallowed holes, rust damage, or bent mounting areas
• Check spindle mounting bolts, blade bolts, washers, belt guides, idler arms, pulleys, and tension springs
• Compare the new parts to your original parts before installation
• After installation, rotate the blades by hand with the mower off to confirm there is no contact or binding
• Test the mower at low speed first and listen for vibration, belt tracking issues, squealing, or unusual noise

Why Buy From PTO Direct USA?

• Fast USA shipping
• Fitment-first product descriptions
• Clear part-number routing for 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 kit fits your mower, send us your mower model number, deck size, blade count, and photos of your original belt, blades, spindle assemblies, mower deck, and mower ID tag before ordering.

FAQ

Does this fit Cub Cadet RZT-L54 KH?

Yes, this kit is listed for select Cub Cadet RZT-L54 KH 54-inch deck applications, including model path 17AFCACK209. Confirm your original belt, blade, and spindle numbers before ordering.

Does this fit Cub Cadet RZT-S54?

This kit is listed for select Cub Cadet RZT-S54 54-inch deck applications, including model path 17WFCBDK010. Match your original part numbers before ordering.

Does this fit Troy-Bilt Mustang 54 XP?

This kit is listed for select Troy-Bilt Mustang 54 XP applications using the listed 918-05137 spindle, 942-0677 blade, and 954-04329 belt path.

What belt comes in this kit?

This kit includes a deck belt replacing 954-04329 and 954-04329A. The listed belt size is 5/8 inch x 148 inches.

What blades come in this kit?

This kit uses the 742-0677 / 942-0677 blade path, along with related blade numbers listed above.

What spindle numbers does this kit replace?

This kit uses the 618-05137 / 918-05137 spindle path. Supplier data lists spindle height as 6-3/4 inches with a 5-3/8 inch pulley outside diameter.

Is this the same as the RZT-S54 KW kit?

No. Both kits may use the 954-04329 belt path, but this kit uses the 918-05137 / 618-05137 spindle path and the 742-0677 / 942-0677 blade path. The RZT-S54 KW kit we list separately uses different spindle and blade numbers.

Is this the same as the Cub Cadet SLT1554 or LGT1054 kit?

No. Some 54-inch Cub Cadet kits may share similar blade references, but this kit uses the 954-04329 belt path and 918-05137 spindle path. Match all part numbers before ordering.

Can I order this kit by mower appearance?

No. Do not order by appearance alone. Match your mower model, deck size, blade count, belt number, blade number, spindle number, pulley setup, and deck layout whenever possible.

Need individual deck parts instead? Browse mower deck belts, mower blades, spindle assemblies, and deck pulleys and idlers.

Need a different deck setup? Browse the full mower deck parts catalog.