954-05078 Deck Belt for Cub Cadet RZT-L50, ZT1-50, MTD & Troy-Bilt | 754-05078
$34.95
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954-05078 Deck Belt for Cub Cadet RZT-L50, ZT1-50, MTD & Troy-Bilt | 754-05078
$34.95
This 954-05078 deck belt is a replacement belt for select 50-inch Cub Cadet, MTD, and Troy-Bilt zero-turn decks using the listed belt numbers.
It is commonly used on MTD-built 50-inch decks that replace 754-05078, 754-05078A, 954-05078, or 954-05078A.
Fitment support before and after purchase.
Key Specs
- Part type: mower deck belt
- Width: 5/8 inch (0.6")
- Length: 143.5 inches
- Thickness: 0.4 inch
- Primary replacement number: 954-05078
- Quantity included: 1 deck belt
Compatible Brands & Model Series
This deck belt is intended for select MTD-built 50-inch zero-turn decks using the listed belt numbers.
- Cub Cadet: RZT-L50 KH (2016–2018), RZT-LX 50 KW (2018), RZT-S50 (2016–2017), RZT-S50 KH (2015–2017), RZT-SX 50 EFI (2018–2020), ZT1-50 KH (2022), ZT1-50 KW (2021–2023)
- MTD: CZTL 50 (2019), Z 550 (2019–2020), Z 5600 (2021), Z 5650 (2021–2022), ZS6700 (2016), ZT-L50 KH (2015–2019)
- Troy-Bilt: Z 50 (2015–2022)
Some aftermarket lists also group this belt with select Husqvarna GT/GTH 52-inch tractors and certain Exmark Lazer/Metro models. Match the original belt number and the 5/8" × 143.5" size before using it on those machines.
Fitment note: Match the original belt number and belt size first. Deck size alone is not enough.
Replaces OEM Deck Belt Numbers
- Cub Cadet / MTD / Troy-Bilt: 754-05078, 754-05078A, 954-05078, 954-05078A
Before Ordering
Before ordering this replacement deck belt, confirm:
- Your original belt number is 754-05078, 754-05078A, 954-05078, or 954-05078A
- Your belt measures 5/8 inch × 143.5 inches
- Your mower uses the correct deck belt routing for this belt path
- Your deck size and mower model match the listed application family
- Your spindle pulleys, idler pulleys, belt guides, and tension system are in good condition
Do not install the belt until fitment is confirmed. Installed belts may not be eligible for return.
Common Symptoms This Belt Helps Fix
- Deck belt slipping
- Deck belt squealing
- Belt jumping off pulleys
- Visible belt cracking, glazing, or fraying
- Blades slowing down under load
- Uneven cut caused by poor belt engagement
- Worn or stretched deck belt
Installation Notes
- Take a photo of the belt routing before removing the old belt
- Inspect idler pulleys, spindle pulleys, and belt guides before installation
- Check the deck tension spring and idler arm for wear or binding
- Make sure the belt is seated fully in each pulley groove
- Rotate the blades by hand with the mower off to confirm smooth belt movement
- Test the deck at low speed first and listen for squealing, vibration, or belt tracking issues
Why Buy From PTO Direct USA
- Fitment-first deck part listings
- Clear OEM belt number routing
- Fast USA shipping
- Support for mower owners, repair shops, and small-engine dealers
- Related deck kits, blades, spindles, pulleys, and PTO clutches available
- Fitment support before and after purchase
Need Help Confirming Fitment?
If you are unsure whether this deck belt fits your mower, send us your mower model number, deck size, original belt number, and a photo of your mower ID tag before ordering.
FAQ
Does this replace 954-05078?
Yes. This deck belt replaces 954-05078 and related belt numbers including 754-05078, 754-05078A, and 954-05078A.
What size is this belt?
This belt is listed as 5/8 inch wide and 143.5 inches long.
Does this fit Cub Cadet RZT-L50 or ZT1-50?
This belt is commonly used on select Cub Cadet RZT-L50, RZT-S50, RZT-SX 50, and ZT1-50 50-inch decks using the 954-05078 belt path. Confirm your original belt number and size before ordering.
Does this fit Troy-Bilt Z 50?
Yes, on Troy-Bilt Z 50 50-inch decks that use 754-05078 or 954-05078.
Can I order this belt by deck size only?
No. Do not order by deck size alone. Match the original belt number, belt width, belt length, mower model, and deck routing before ordering.
Need more deck parts? Browse mower deck parts, deck rebuild kits, mower blades, spindle assemblies, and deck pulleys and idlers.
On select 50-inch Cub Cadet RZT and ZT1 models, this belt is used with the 917-05209 PTO clutch.