Grasshopper PTO clutch fitment can get confusing fast, especially when the same mower model appears across different engine packages with different crankshaft sizes. This guide helps narrow down the correct aftermarket replacement PTO clutch family by model, serial range, engine package, bore size, OEM number, Warner number, and aftermarket cross-reference.
Fitment-first rule: If relying on model alone. Always verify bore size, pulley style, and connector before ordering.
Find Your Grasshopper PTO Clutch
| Grasshopper Models | Likely PTO Clutch Family | Key Fitment Note | Shop Replacement |
|---|---|---|---|
| 620T, 722D2, 722DT6, 725DT6, 727K2, 727T6, 729BT6, 729G2, 729T6, 735BT6, 928D2, 930D2, 932G2 | 388771 | 1-1/8" bore double-pulley family. Verify original clutch number, especially on overlapping 729G2 applications. | Shop 388771 PTO Clutch |
| 218, 220, 223, 225, 226V, 227, 321D, 322D, 325, 325A, 325D, 327A, 327EFI, 329, 428D, 430D | 388740 | Large single-pulley MidMount clutch. Do not substitute a smaller double-pulley FrontMount clutch. | Shop 388740 PTO Clutch |
| 614, 616, early 618, early 718 | 606239 | 1" bore double-pulley family. Early 618 and 718 applications must be checked carefully before ordering. | Shop 606239 PTO Clutch |
| Later 618, 718K, 720K, 721, 721D, 721D2, 721DH, 721G2, 723KH, 725, 725A, 725G2, 725K, 725K2, 729G2, 928G2 | 388769 | 1-1/8" bore double-pulley family. Verify original clutch number on 618, 718, and 729G2 machines. | Shop 388769 PTO Clutch |
Important: model routing is a starting point, not the final confirmation. If your original PTO clutch has a readable label, use the OEM, Warner, or aftermarket number on that clutch as the deciding reference.
Common Grasshopper PTO Clutch Ordering Mistakes
- Ordering by model alone: Grasshopper model numbers can overlap across clutch families. Always verify the original clutch number before ordering.
- Missing the 618 and 718 bore-size split: early machines may use the 606239 PTO clutch with a 1" bore, while later machines may use the 388769 PTO clutch with a 1-1/8" bore.
- Assuming 388771 and 388769 interchange: both are 1-1/8" bore double-pulley clutch families, but they are not automatically interchangeable. Verify the OEM or Warner number before ordering.
- Confusing MidMount and FrontMount clutches: the 388740 PTO clutch is a large single-pulley MidMount clutch. It is not interchangeable with smaller double-pulley FrontMount clutch families.
388771 PTO Clutch Family
The 388771 PTO clutch family is commonly routed to select Grasshopper FrontMount applications including 620T, 722D2, 722DT6, 725DT6, 727K2, 727T6, 729BT6, 729G2, 729T6, 735BT6, 928D2, 930D2, and 932G2.
This is a 1-1/8" bore double-pulley clutch family. It is commonly searched by Grasshopper OEM numbers 388771, 388768, and 604183.
- Replacement for OEM part numbers: 388771, 388768, 604183
- Warner numbers: 5218-226, 5218-170, 5218-229
- Aftermarket cross-references: X0105, Stens 255-771, Oregon 33-189, Rotary 11074
- Fitment note: verify the original clutch number before ordering, especially if your mower is a 729G2 or another model with possible overlap.
View the 388771 aftermarket replacement PTO clutch
388740 PTO Clutch Family
The 388740 PTO clutch family is used on select Grasshopper MidMount models including 218, 220, 223, 225, 226V, 227, 321D, 322D, 325, 325A, 325D, 327A, 327EFI, 329, 428D, and 430D.
This is the large single-pulley MidMount clutch family. Do not replace it with a smaller double-pulley FrontMount clutch just because the bore size appears similar.
- Replacement for OEM part number: 388740
- Warner numbers: 5218-225, 5218-165
- Aftermarket cross-references: X0104, X0248, Stens 255-865, Oregon 33-155, Rotary 15565
- Fitment note: confirm your original clutch is the large single-pulley MidMount design before ordering.
View the 388740 aftermarket replacement PTO clutch
606239 PTO Clutch Family
The 606239 PTO clutch family is commonly routed to select 614, 616, early 618, and early 718 Grasshopper applications.
The key detail on this family is the 1" crankshaft bore. This is the main trap on early 618 and 718 machines. If your machine uses a 1-1/8" crankshaft, this is not the correct clutch family.
- Replacement for OEM part numbers: 606239, 606240, 388760, 388761, 388763, 388764, 388765, 388795
- Warner numbers: 5219-10, 5218-69, 5218-59, 5218-264, 5218-212
- Aftermarket cross-references: X0328, X0328-K, Prime Line 7-06287
- Fitment note: confirm 1" bore and verify the original clutch number before ordering.
View the 606239 aftermarket replacement PTO clutch
388769 PTO Clutch Family
The 388769 PTO clutch family is commonly routed to later 618 applications and select 700 and 900 series Grasshopper models including 718K, 720K, 721, 721D, 721D2, 721DH, 721G2, 723KH, 725, 725A, 725G2, 725K, 725K2, 729G2, and 928G2.
This is a 1-1/8" bore double-pulley clutch family. It can look similar to the 606239 family from the outside, but the bore size is different. It also should not be treated as automatically interchangeable with the 388771 family.
- Replacement for OEM part numbers: 388769, 388767, 606242, 7058925YP, 7058925
- Warner numbers: 5218-214, 5218-257, 5218-147, 5218-26, 5218-58, 5218-67
- Aftermarket cross-references: X0043, Stens 255-335, Stens 255-895, Oregon 33-121, Rotary 12114
- Fitment note: confirm 1-1/8" bore and verify the original OEM or Warner clutch number before ordering.
View the 388769 aftermarket replacement PTO clutch
Grasshopper PTO Clutch Cross-Reference Table
| Clutch Family | Replacement for OEM Part Numbers | Warner Numbers | Aftermarket Cross-References | Product Link |
|---|---|---|---|---|
| 388771 | 388771, 388768, 604183 | 5218-226, 5218-170, 5218-229 | X0105, Stens 255-771, Oregon 33-189, Rotary 11074 | 388771 PTO Clutch |
| 388740 | 388740 | 5218-225, 5218-165 | X0104, X0248, Stens 255-865, Oregon 33-155, Rotary 15565 | 388740 PTO Clutch |
| 606239 | 606239, 606240, 388760, 388761, 388763, 388764, 388765, 388795 | 5219-10, 5218-69, 5218-59, 5218-264, 5218-212 | X0328, X0328-K, Prime Line 7-06287 | 606239 PTO Clutch |
| 388769 | 388769, 388767, 606242, 7058925YP, 7058925 | 5218-214, 5218-257, 5218-147, 5218-26, 5218-58, 5218-67 | X0043, Stens 255-335, Stens 255-895, Oregon 33-121, Rotary 12114 | 388769 PTO Clutch |
Need Help Confirming Fitment?
If you are not sure which Grasshopper PTO clutch you need, start with the original clutch label. The most useful numbers are the Grasshopper OEM number, Warner number, or aftermarket number stamped or printed on the clutch.
For 618, 718, and 729G2 applications, confirm fitment before ordering. These models can cross into different PTO clutch families depending on the original clutch, crankshaft bore, pulley design, and production configuration.
Before ordering, verify:
- Original clutch part number
- Crankshaft bore size: 1" or 1-1/8"
- Single-pulley or double-pulley design
- Connector and anti-rotation style
- Model and serial information when available
PTO Direct USA supplies aftermarket replacement PTO clutches for select Grasshopper applications. These products are replacement parts for matching OEM part numbers. Confirm fitment before ordering.