Spindle Assembly 918-06978 / 618-06978 for Cub Cadet MTD 54-Inch Deck
Spindle Assembly 918-06978 / 618-06978 for Cub Cadet MTD 54-Inch Deck
Overview
This aftermarket 918-06978 / 618-06978 spindle assembly is a replacement-style mower deck spindle assembly with pulley for select Cub Cadet, MTD, Troy-Bilt, Craftsman, Columbia, and related 54-inch mower deck applications.
Choose the 1-pack, 2-pack, or 3-pack option that matches your repair. Match your original spindle number before ordering.
Associated deck kit for same spindle path: 54-Inch Deck Rebuild Kit for Cub Cadet RZT-S54 KW
Key Features
- Aftermarket replacement-style mower deck spindle assembly
- Product Type: Spindle Assembly
- Lead Spindle Number: 918-06978
- Also Replaces: 618-06978
- Aftermarket Cross-Reference: Stens 285-705
- Common Deck Reference: 54 inch
- Pulley Included: Yes
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Blade Mount: 6-point star
Compatible Brands & Model Series
This 918-06978 / 618-06978 spindle assembly is associated with select Cub Cadet, MTD, Troy-Bilt, Craftsman, Columbia, and related 54-inch mower deck applications using the listed spindle replacement path.
Common model references include:
- Troy-Bilt: TB2454, Super Bronco 54, Super Bronco 54 GT, Mustang 54 XP
- MTD: ZT-L54 KH, ZT-S54 KH
- Craftsman: T8400, G8600, G8400, Z6900, Z6600
- Columbia: CGT5426, CSLT5424
- Cub Cadet: RZT-L54, RZT-L54KH, RZT-L54KW, RZT-LX 54, RZT-S54, RZT-S54KH, RZT-S54KW, XT1-GT54, XT1-ST54, XT2-GX54
Verify your part numbers before ordering.
Replaces OEM Part Numbers
- Cub Cadet: 618-06978, 918-06978
- MTD: 618-06978, 918-06978
- Troy-Bilt: 618-06978, 918-06978
- Stens: 285-705
Spindle Specifications
- Spindle Numbers: 918-06978, 618-06978
- Blade Mount: 6-point star
- Pulley Included: Yes
- Hardware: Includes bolts when shown in the product image
- Common Deck Reference: 54 inch
Common Symptoms / When to Replace
- Mower deck spindle is noisy, loose, seized, or wobbling
- Blade has excessive play at the spindle shaft
- Deck vibration increases during blade engagement
- Pulley, spindle housing, or bearing area is worn or damaged
- Original spindle number matches 918-06978 or 618-06978
Quick Ship Fulfillment
This item may ship directly from one of our trusted U.S. distribution partners to help reduce transit time. Packaging, labeling, or warehouse origin may vary, but the part will match the replacement numbers, fitment notes, and specifications shown in this listing.
Why Buy From PTO Direct USA
- Fitment-first product organization by spindle part-number path
- Clean 1-pack, 2-pack, and 3-pack options for the same spindle assembly
- Clear Cub Cadet, MTD, Troy-Bilt, Craftsman, and Columbia 54-inch deck replacement path
- U.S.-focused fulfillment options for faster delivery when available
Need a Custom Package?
Need a different combination of parts? Email us the part type and part numbers you need, such as spindle assemblies, blades, belts, pulleys, reinforcement rings, bearings, or hardware. We can review the part-number path and quote a custom package when available.
FAQ
Is this an OEM Cub Cadet or MTD spindle assembly?
No. This is an aftermarket replacement-style spindle assembly intended to replace the listed part-number path when the physical fitment details match.
What is the lead spindle number for this listing?
The lead spindle number is 918-06978. This listing also replaces 618-06978.
What quantity options are available?
This listing is available as a 1-pack, 2-pack, or 3-pack of the same spindle assembly.
Does each spindle assembly include a pulley?
Yes. Each spindle assembly includes a pulley.
Are mounting bolts included?
Mounting hardware is included when shown in the selected product image. Confirm the selected variant image before checkout.
Does this fit Cub Cadet RZT-L54 and RZT-S54?
This spindle path is associated with select Cub Cadet RZT-L54, RZT-S54, and related 54-inch deck applications. Match your original spindle number before ordering.
Is Stens 285-705 the same replacement path?
285-705 is the Stens aftermarket cross-reference for this spindle assembly path.
Can I order by mower model or deck size only?
No. Mower model and deck size alone are not enough. Match the original spindle number first, then confirm spindle height, pulley diameter, blade mount, mounting pattern, hardware, and belt routing before ordering.