00447100 PTO Clutch for Gravely Pro-Turn & Pro-Master | Ogura GT3.5-VP01R
Overview
This aftermarket 00447100 electric PTO clutch is a replacement for select Gravely and Ariens commercial mower applications using the 00447100 or Ogura GT3.5-VP01R clutch path.
This clutch uses a 1-1/8-inch crankshaft bore, approximately 6-7/16-inch pulley, and CCW rotation from the pulley side. It is designed as a complete assembled electric PTO clutch commonly used on Gravely Pro-Turn and Pro-Master platforms.
Fitment note: Gravely and Ariens model-family names cover multiple engines, deck sizes, and clutch paths. Confirm that the original clutch or model-specific parts manual identifies 00447100 or GT3.5-VP01R before ordering.
Key Features
- Aftermarket electric PTO clutch assembly
- Primary OEM Part Number: 00447100
- Also Listed As: 447100
- Ogura Cross-Reference: GT3.5-VP01R
- Crankshaft Bore: 1-1/8 inch / 1.125 inch
- Pulley Diameter: approximately 6-7/16 inch (6.45 inch)
- Rotation: CCW from pulley side
- Belt Compatibility: 1/2-inch or 5/8-inch V-belt on supported applications
- Voltage: 12 VDC
- Complete assembled replacement clutch
Compatible Brands & Model Series
This PTO clutch is intended for select Gravely and Ariens commercial mower configurations using the confirmed 00447100 / Ogura GT3.5-VP01R clutch path.
- Gravely Pro-Turn: select applications using 00447100
- Gravely Pro-Master: select applications using 00447100
- Ariens: select commercial platforms that share the same 00447100 / GT3.5-VP01R path
Model-family warning: Pro-Turn, Pro-Master, and related Gravely / Ariens family names cover multiple clutch configurations. Do not order from the mower-family name, engine, or deck size alone. Confirm part number with a model specific parts diagram.
Replaces OEM Part Numbers
- Gravely: 00447100, 447100
- Ariens: 00447100
Aftermarket Cross-Reference Numbers
- Ogura: GT3.5-VP01R
- Xtreme: X0667 (common aftermarket path)
- Rotary: 15776
Common Symptoms of a Failing PTO Clutch
- Blades will not engage when the PTO switch is activated
- The clutch clicks but the deck belt does not begin turning
- Blades engage when cold but stop after the clutch heats up
- The clutch slips during heavy or wet cutting conditions
- The deck belt squeals, smokes, or overheats during engagement
- Burning smell near the engine crankshaft or clutch
- Grinding, rumbling, or excessive pulley-bearing noise
- Intermittent blade engagement under load
What’s Included
- 1 complete aftermarket electric PTO clutch assembly
- Integrated approximately 6-7/16-inch pulley
- Integrated electromagnetic coil and brake assembly
- Clutch-side electrical connection as pictured
Included-item warning: Do not assume the mower-side harness, crankshaft bolt, key, washer, spacer, clutch anchor, or anti-rotation bracket is included unless clearly shown in the product photos.
Why Buy From PTO Direct USA?
- Part-number-first PTO clutch listings
- Clear aftermarket cross-reference distinctions
- Fitment-focused product descriptions
- Fast USA shipping
- 1-year warranty
- Support for mower owners, repair shops, and commercial operators
Need Help Confirming Fitment?
Send PTO Direct USA the complete Gravely or Ariens model number, serial number, deck size, engine model, and original PTO clutch number before ordering.
For the best fitment help, include clear photos of the mower identification tag, original clutch label or stamped number, pulley, electrical connector, and anti-rotation setup.
FAQ
What PTO clutch replaces Gravely 00447100?
This aftermarket electric PTO clutch replaces Gravely / Ariens 00447100 on compatible applications. The matching Ogura number is GT3.5-VP01R.
Does this replace Ogura GT3.5-VP01R?
Yes. This listing is built for the GT3.5-VP01R clutch path when the original clutch number and physical specifications match.
What are the main specifications for this clutch path?
1-1/8-inch crankshaft bore, approximately 6-7/16-inch pulley, CCW rotation from the pulley side, and compatibility with 1/2-inch or 5/8-inch V-belt applications on the supported path.
Does this fit Gravely Pro-Turn or Pro-Master mowers?
It fits select Pro-Turn and Pro-Master applications that use the confirmed 00447100 / GT3.5-VP01R path. Confirm the complete model number and original clutch number before ordering.
Can I order this clutch by model name or deck size alone?
No. Match the original clutch number or the exact model-specific parts diagram first, then confirm bore, pulley diameter, rotation, and connector style.
Is the mounting hardware or wiring harness included?
Do not assume the crankshaft bolt, key, washer, spacer, anti-rotation bracket, or mower-side harness is included unless clearly shown in the current product listing.