Description
Hustler OEM 601278P PTO Clutch Kit (Warner 5228-57)
The Genuine Hustler OEM 601278P PTO Clutch is known for its Precision Engineering, Durability, and Reliable Performance. Designed to Allow the Correct Torque, Delay and Engagement Optimal for Engine and Mower Deck Components for Performance and Durability with the Push or Pull of a PTO switch. Enabling High-Quality Electronic Control over Mower Deck and Attachments. Hustler OEM 601278P PTO Clutch Fits Select Hustler Commercial Mowers.
⚠️ Before You Order – Verify Fitment
PTO Clutches can vary by Mower Model, Serial Range, Engine Setup, Crankshaft Size, Pulley Style, Belt Configuration, and Clutch Version. Do not order by appearance only. Hilly Ridge does not offer any Type of Return on Electrical Items Unless it was an Error in Our Listings. So, Due to Variation Within Model Numbers/Series, Refer to the Model Fit Chart for an Accurate Break down of Specific Model Number Usage.
Not sure? Contact us with your Hustler model and serial number and we’ll help verify fitment.
What This Part Does
- Enables the correct Torque, Delay and Engagement Optimal for Engine and Mower Deck Components
- Enable Proper Mower Blade Engagement with the Push or Pull of a PTO switch
- Replaces Worn, Slipping, Weak, or Failed PTO clutch assemblies * Common Diagnosis - Clutch Bearing May Overheat or Lock Up from Extended Usage, Weather (Water & Heat) or Other Factors Causing the Blades to Constantly act Like They are Engaged When the PTO Switch is Disengaged or the Engine May Seem to Be Lock Up and Not Turn Over.
- Genuine Hustler OEM Replacement Part for Proper Fit and Performance
Part Details & Specifications
- Brand: Hustler
- Part Number: 601278P
- Part Type: PTO Clutch Kit
- Clutch Series: Warren 5228-57
- Supersession: Part Numbers 601278K & 601278 Supersedes to Part Number 601278P
Fits Select Hustler Models
Used on select commercial Hustler mower applications including:
- Hustler Diesel Z (All Models)
- Hustler Super 104 (Only Model 943225)
Associated Parts List
Super 104
- 036236 - Clutch Anchor Bolt (5/16 x 1.00 - 18) - Reference Number 15
- 768523 - Clutch Anchor Washer (SAE 0.343 - Fits 5/16)- Reference Number 16
- 113347 - Clutch Anchor - Reference Number 17
- 000331 - Wire Tie - Reference Number 18
- 034272 - Clutch Anchor Lock Nut (5/16 - 18) - Reference Number 19
- 602755 - Engine Pulley - Reference Number 20
- 212076 - Engine Pulley Key (1/4 x 1.50) - Reference Number 21
- 791251P - Clutch Harness Wire Pigtail - Reference Number 23
- 602680 - PTO Clutch Washer (.453 x 1.012 x .12 Fits 7/16) - Reference Number 24
- 785048 - PTO Bolt / Loctite (7/16 x 3.00 - 20) - Reference Number 25

Diesel Z
- 601279 - Stub Shaft - Reference Number 1
- 712919 - Hub Shaft Washer (SAE 0.406x1.00x0.12 - Fits 10MM Bolt) - Reference Number 2
- 038836 - Hub Shaft Bolt (M10 x 25 - 1.50) - Reference Number 3
- 602680 - PTO Clutch Washer (.453 x 1.012 x .12 Fits 7/16) - Reference Number 5
- 778217 - PTO Bolt / Loctite (7/16 x 2 1/4 - 20) - Reference Number 6
- 791251P - Clutch Harness Wire Pigtail - Reference Number 7
- 126311-5276 - Clutch Anchor - Reference Number 8
- 768523 - Clutch Anchor Washer (SAE 0.343 - Fits 5/16)- Reference Number 2
- 036236 - Clutch Anchor Bolt (5/16 x 1.00 - 18) - Reference Number 1

Assembly Directions
For Clearer More Readable Assembly Direction Right Click Image and Select Open in a New Window. Direction Can also Be Magnified in the Images as well


Model Fit Chart
Diesel Z (2025 - Earlier Models)
938233US, 938241US, 938258US, 938266US, 940452US, 940460US, 940478US, 940486US, 943233US, 943241US, 943249US, 943266US
Super 104 (One Model)
943225
