If you already know your part number, browse our Ariens PTO clutch collection to find a direct replacement for your equipment.
If your Ariens HE19P Power Head PTO clutch is not engaging, slipping under load, or failing to drive attachments properly, a worn clutch assembly is one of the most common causes. Power head units rely on consistent PTO engagement to transfer engine power to driven attachments and cutting systems.
This guide explains PTO clutch fitment, common failure symptoms, and how to identify the correct replacement for Ariens power head applications.
Ariens HE19P Power Head PTO Clutch Replacement
The PTO clutch on the Ariens HE19P Power Head mounts directly to the engine crankshaft and engages driven components when the PTO system is activated. This electromagnetic clutch must engage smoothly and consistently to maintain proper operation.
As the clutch wears, internal components such as bearings and friction surfaces degrade, leading to slipping, overheating, or complete failure to engage.
Many Ariens power head applications use PTO clutch part number 00191700 that falls within the same cross-reference group as our multi-fit 110-6766 PTO clutch, which is also widely used across Toro, Exmark, Gravely, and Cub Cadet mower platforms.
This clutch platform also cross-references with OEM numbers including 100-6059, 103-9950, 108-9510, 5219-81, 5219-45, and 5219-34A.
For broader Ariens coverage, see our Ariens PTO clutch replacement guide. For full cross-platform fitment, see the 110-6766 PTO clutch fitment guide.
Common Signs of a Failing PTO Clutch
- PTO will not engage when activated
- Intermittent operation of driven attachments
- Burning smell or overheating near the clutch assembly
- Squealing or grinding noise from worn bearings
- Loss of power transfer under load
Where Is the PTO Clutch Located?
The PTO clutch is mounted directly to the engine crankshaft on the power head unit and drives the attachment system when engaged.
Access typically requires removing shields or covers to inspect the clutch assembly and wiring connections.
Replaces OEM Part Numbers
This PTO clutch platform is used across multiple equipment brands and cross-references with the following OEM and Warner part numbers. Matching your original part number is the most reliable way to confirm compatibility.
- Ariens / Gravely: 00191700, GDA10017
- Toro / Exmark: 110-6766, 103-9950, 100-6059, 108-9510
- Warner: 5219-81, 5219-45, 5219-34A, 5219-34, 5219-58, 5219-63, 5219-66
- Cub Cadet / MTD: 917-04214, 717-04214, 917-04526, 717-04526, 917-04526A
How to Confirm the Correct PTO Clutch
The most accurate way to identify the correct replacement is to match the OEM part number stamped on your original clutch.
If your clutch matches any of the cross-reference numbers listed above, this is the correct replacement group to verify.
If the OEM number is not readable, confirm fitment using equipment specifications such as crankshaft size and pulley dimensions.
Related Ariens PTO Clutch Guides
Looking for fitment on other Ariens equipment? Explore related PTO clutch replacement guides below:
- Ariens Zoom PTO Clutch Replacement
- Ariens Pro-Master PTO Clutch Replacement
- Ariens PTO Clutch Replacement Guide
Find the Right PTO Clutch for Ariens Power Head
If your Ariens HE19P Power Head PTO clutch is not functioning correctly, replacing a worn clutch will restore proper operation and prevent further equipment damage.
Shop the 110-6766 PTO clutch replacement or browse the full Ariens PTO clutch collection for additional compatible options.