John Deere Z915E PTO Clutch Quick Reference
The correct John Deere Z915E PTO clutch depends primarily on the mower’s original deck size.
Quick answer:
- Z915E with 48-inch deck: John Deere TCA24445
- Z915E with 54-inch deck: John Deere TCA24445
- Z915E with 60-inch deck: John Deere TCA24446
John Deere does not show a serial-number split for these Z915E clutch assignments in its commercial mower parts guide. However, the full mower PIN should still be checked to confirm the original deck configuration and rule out a deck or engine change.
Do not order from the Z915E model name alone. The 48-, 54-, and 60-inch configurations do not all use the same PTO clutch.
Quick Z915E PTO Clutch Routing
| John Deere Model | Deck Size | OEM PTO Clutch | Warner Path | Torque Rating | PTO Direct Route |
|---|---|---|---|---|---|
| Z915E | 48 inch | TCA24445 | 5219-179 Earlier 5219-144 |
125 ft-lbs | View TCA24445 PTO Clutch |
| Z915E | 54 inch | TCA24445 | 5219-179 Earlier 5219-144 |
125 ft-lbs | View TCA24445 PTO Clutch |
| Z915E | 60 inch | TCA24446 | 5218-337 Earlier 5218-338 and 5218-312 |
200 ft-lbs | View TCA24446 PTO Clutch |
Routing rule: Match the deck size first, then confirm the OEM clutch number from the John Deere parts diagram or original clutch label.
Z915E with 48-Inch or 54-Inch Deck
John Deere Z915E mowers equipped with an original 48-inch or 54-inch deck use the TCA24445 PTO clutch path.
TCA24445 Reference Numbers
- Current John Deere Number: TCA24445
- Earlier John Deere Number: TCA22415
- Current Warner Number: 5219-179
- Earlier Warner Number: 5219-144
TCA24445 Reference Specifications
- Voltage: 12 VDC
- Rated Torque: 125 ft-lbs
- Crankshaft Bore: 1-1/8 inch with standard keyway
- Pulley Diameter: approximately 6.62 inch
- Rotation: CCW from pulley side
- Mounting Style: standard mount
- Connection Type: integral electrical connection
Important: Do not substitute the heavier TCA24446 clutch merely because several of the published physical dimensions are similar. The two clutches follow different John Deere and Warner application paths.
Z915E with 60-Inch Deck
John Deere Z915E mowers equipped with an original 60-inch deck use the TCA24446 PTO clutch path.
View the TCA24446 PTO clutch for the John Deere Z915E 60-inch deck.
TCA24446 Reference Numbers
- Current John Deere Number: TCA24446
- Earlier John Deere Number: TCA22416
- Current Warner Number: 5218-337
- Earlier Warner Numbers: 5218-338, 5218-312
- Rotary Reference: 17271
- Xtreme References: X0919, X0919A
TCA24446 Reference Specifications
- Voltage: 12 VDC
- Rated Torque: 200 ft-lbs
- Crankshaft Bore: 1-1/8 inch with standard keyway
- Pulley Diameter: approximately 6.62 inch
- Rotation: CCW from pulley side
- Mounting Style: standard mount
- Connection Type: integral electrical connection
The TCA24446 path is the higher-torque clutch used with the Z915E 60-inch deck configuration.
TCA24445 vs. TCA24446
These clutches are easy to confuse because their published bore, pulley diameter, rotation, mounting style, and connection type are similar. They should still be treated as separate clutch paths.
| Specification | TCA24445 | TCA24446 |
|---|---|---|
| Common Z915E Deck | 48 or 54 inch | 60 inch |
| Current Warner Path | 5219-179 | 5218-337 |
| Earlier Warner Path | 5219-144 | 5218-338, 5218-312 |
| Rated Torque | 125 ft-lbs | 200 ft-lbs |
| Bore | 1-1/8 inch keyed | 1-1/8 inch keyed |
| Pulley Diameter | Approximately 6.62 inch | Approximately 6.62 inch |
| Rotation | CCW from pulley side | CCW from pulley side |
| Mounting | Standard | Standard |
| Electrical Connection | Integral | Integral |
The shared dimensions do not make these clutches automatically interchangeable. Match the John Deere OEM number and deck application before ordering.
2018 John Deere Z915E Fitment Example
For a 2018 John Deere Z915E with an original 60-inch deck, the expected PTO clutch path is:
- John Deere: TCA24446
- Earlier John Deere: TCA22416
- Current Warner: 5218-337
- Earlier Warner: 5218-338, 5218-312
View the TCA24446 replacement path.
The model year alone is not the deciding factor. A Z915E with a 48- or 54-inch deck follows the TCA24445 path, even when the mower is from the same production period.
How to Confirm Your Z915E PTO Clutch
Before ordering, confirm:
- The mower is a John Deere Z915E
- The original mower deck is 48, 54, or 60 inches
- The full mower PIN from the identification tag
- The OEM number shown in the John Deere parts diagram
- The number printed on the original clutch label, when readable
- The 1-1/8-inch keyed crankshaft bore
- The approximately 6.62-inch pulley
- CCW rotation from the pulley side
- The integral electrical connection
- The pulley offset and deck-belt alignment
- The anti-rotation bracket or rod configuration
Do not order by appearance alone. TCA24445 and TCA24446 can look similar while having different torque ratings and deck applications.
Common Z915E Ordering Mistakes
- Ordering by the Z915E model name without checking the deck size
- Assuming every Z915E uses TCA24446
- Ordering TCA24445 for a 60-inch deck because the pulley dimensions look similar
- Ordering TCA24446 for a 48- or 54-inch deck because it has the higher torque rating
- Using only the incomplete Warner family number, such as “5218” or “5219”
- Ignoring a deck conversion or replacement deck installed by a previous owner
- Failing to compare the connector, pulley offset, and anti-rotation setup
Need Help Confirming Fitment?
Send PTO Direct USA the complete John Deere mower model, full PIN, deck size, and original clutch number.
Include clear photos of the mower identification tag, original clutch label, keyed bore, pulley, electrical connector, mounting orientation, and anti-rotation bracket or rod. When the clutch label is unreadable, include the pulley diameter, pulley offset, and clutch-body height.
For more general identification help, use the PTO Clutch Fitment Guide.
FAQ
What PTO clutch does a John Deere Z915E use?
It depends on the deck size. Z915E mowers with 48- or 54-inch decks use TCA24445. Z915E mowers with 60-inch decks use TCA24446.
What PTO clutch fits a John Deere Z915E with a 60-inch deck?
The John Deere Z915E with an original 60-inch deck uses the TCA24446 PTO clutch path.
What PTO clutch fits a John Deere Z915E with a 54-inch deck?
The John Deere Z915E with a 54-inch deck uses the TCA24445 PTO clutch path.
What PTO clutch fits a John Deere Z915E with a 48-inch deck?
The John Deere Z915E with a 48-inch deck uses the TCA24445 PTO clutch path.
Does a 2018 John Deere Z915E with a 60-inch deck use TCA24446?
Yes. A 2018 Z915E with its original 60-inch deck follows the TCA24446 clutch path. Confirm the full mower PIN and original deck configuration before ordering.
Is there a Z915E serial-number split between TCA24445 and TCA24446?
John Deere’s commercial parts guide does not show a Z915E serial split for these clutch paths. The listed routing is based on deck size: 48 and 54 inches use TCA24445, while 60 inches uses TCA24446.
Is TCA24445 the same as TCA24446?
No. They share several published dimensions, but they have different John Deere applications, Warner paths, and torque ratings. TCA24445 is rated at 125 ft-lbs, while TCA24446 is rated at 200 ft-lbs.
What Warner clutch replaces TCA24445?
The current Warner cross-reference is 5219-179. It replaces the earlier Warner 5219-144 clutch path.
What Warner clutch replaces TCA24446?
The current Warner cross-reference is 5218-337. Warner lists it as replacing the earlier 5218-338 and 5218-312 clutch paths.
Does TCA24445 replace TCA22415?
Yes. John Deere identifies TCA24445 as the replacement for the earlier TCA22415 PTO clutch.
Does TCA24446 follow the TCA22416 path?
Yes. TCA22416 is an earlier John Deere number within the current TCA24446 replacement path.
Can I install TCA24446 in place of TCA24445 because it has more torque?
Do not make that substitution based on torque or dimensions alone. Use the clutch assigned to the mower’s deck configuration and confirm the original John Deere part number.
Do both clutches use a normal crankshaft keyway?
Yes. Both Warner reference paths use a conventional 1-1/8-inch keyed crankshaft bore.
Can I order a Z915E PTO clutch by appearance?
No. Match the deck size and original John Deere clutch number first, then confirm the bore, pulley diameter, rotation, connector, pulley offset, anti-rotation setup, and mower PIN.