917-04552A PTO Clutch Replacement for Cub Cadet RZT 50, LTX1050 | Warner 5219-98

Overview

This 917-04552A PTO clutch replacement is an aftermarket electric PTO clutch for select Cub Cadet, MTD, Troy-Bilt, Craftsman, Bolens, Huskee, and White Outdoor mower applications.

This clutch replaces MTD / Cub Cadet 917-04552A, 717-04552A, 917-04552, and 717-04552, and cross-references Warner 5219-98, Xtreme X0390, Stens 255-839X, Rotary 14229, and Sunbelt B1XT0390.

Built with a 1-inch crankshaft bore, 6-inch pulley diameter, counter-clockwise rotation, and an integral connector, this clutch is designed to restore reliable mower deck engagement when matched to the correct mower model, original clutch number, and physical specs.

This listing is available in two configurations that share the same critical 917-04552 fitment dimensions and mounting path: the Standard Black Pulley version and the HD Big Bearing Upgrade. The primary difference is clutch construction and wiring configuration.

The Standard Black Pulley version offers the most flexible wiring setup. A flat side-by-side connector can plug directly into the clutch, or the included wire lead can be used for applications requiring a T-style connector. The HD Upgrade uses a larger bearing design with a short wire lead terminating in the T-style connector. Zip ties are included with the HD version to help secure and route the wiring during installation.

Key Features

• Aftermarket electric PTO clutch replacement for listed MTD-built mower applications
• Available Configurations: Standard Black Pulley or HD Big Bearing Upgrade
• Crankshaft Bore: 1"
• Pulley Diameter: 6"
• Belt Width: accepts 1/2" or 5/8" belt
• Rotation: CCW from pulley side
• Voltage: 12V DC
• Standard Wiring: flat side-by-side connection at clutch or included lead for T-style connector
• HD Wiring: short wire lead with T-style connector
• Alternate HD Plug Options: Email support@ptodirectusa.com to inquire about HD Big Bearing versions with the same critical fitment dimensions but alternate connector configurations.
• HD Installation Access: The HD Big Bearing version uses a more accessible wrenchable D-spacer, making it easier to hold the crankshaft from turning while torquing the clutch mounting bolt. On the Standard Black Pulley version, the D-spacer is recessed farther inside the pulley and may require a different crankshaft-holding method during installation.
• Integrated brake assembly for controlled blade stopping
• Fully assembled and ready to install

Compatible Brands & Models

This PTO clutch fits select Cub Cadet, MTD, Troy-Bilt, Craftsman, Bolens, Huskee, and White Outdoor applications that use the 917-04552A or Warner 5219-98 clutch path. Fitment depends on original clutch number, crankshaft bore, pulley diameter, rotation, connector style, and mower configuration.

Need to compare RZT clutch paths? See the Cub Cadet RZT PTO Clutch Guide to compare RZT 42, RZT 50, RZT-L, and RZT-S clutch families before ordering.

Cub Cadet Applications

• Cub Cadet RZT 50: select 2008-2012 50-inch deck applications using the 917-04552A / Warner 5219-98 clutch path. For the full RZT 50 PTO and deck parts route, see the Cub Cadet RZT 50 Parts Guide.
• Cub Cadet RZT 54: select 2009-2012 applications
• Cub Cadet LTX1050: select 2009-2011 50-inch deck applications
• Cub Cadet LTX1046: select 2009-2011 applications
• Cub Cadet LTX1045: select 2009-2011 applications
• Cub Cadet LTX1042: select 2009-2011 applications
• Cub Cadet FMZ 50: verify original clutch number before ordering
• Cub Cadet Z-Force S Series: verify original clutch number before ordering

Troy-Bilt / MTD Applications

• Troy-Bilt Mustang XP: select 2010-2012 zero-turn applications
• MTD / White Outdoor ZT-50 and RZT-50: select 2009-2013 17-Z series zero-turn applications

Craftsman Applications

• Craftsman 247.25002: verify original clutch number before ordering
• Craftsman 247.28880: verify original clutch number before ordering
• Craftsman 247.28888: verify original clutch number before ordering

Fitment note: If your original clutch is marked 917-04552A, 717-04552A, 917-04552, 717-04552, Warner 5219-98, Xtreme X0390, Stens 255-839X, or Rotary 14229, this is the correct replacement path. However, carefully match specs if relying on model information alone. If your RZT model uses a different original clutch number, compare alternate paths in the Cub Cadet RZT PTO Clutch Guide.

Replaces OEM Part Numbers

• MTD: 917-04552A, 717-04552A, 917-04552, 717-04552
• Cub Cadet: 917-04552A, 717-04552A, 917-04552, 717-04552
• Troy-Bilt: 917-04552A, 717-04552A, 917-04552, 717-04552
• Craftsman: 917-04552A, 717-04552A, 917-04552, 717-04552

Cross-Reference Aftermarket Numbers

• Warner: 5219-98, 521998
• Xtreme: X0390
• Stens: 255-839, 255-839X
• Rotary: 14229, 10-14229
• Sunbelt: B1XT0390

What’s Included

Standard Black Pulley

• Complete electric PTO clutch assembly
• 6" black pulley
• Pre-installed bearing assembly
• Encapsulated electromagnetic coil
• Integrated brake assembly
• Flat side-by-side clutch connector
• Wire lead for T-style connector applications

HD Big Bearing Upgrade

• Complete HD electric PTO clutch assembly
• 6" pulley
• Upgraded large-bearing construction
• Encapsulated electromagnetic coil
• Integrated brake assembly
• Short wire lead with T-style connector
• Zip ties for securing and routing clutch wiring

Why Buy From PTO Direct USA?

• Fast USA shipping
• Fitment guarantee
• 1-year warranty
• Fitment-first product support
• Clear product images for easier clutch identification
• Trusted replacement supplier for homeowners, repair shops, and mower service professionals

FAQ

What is the difference between the Standard and HD Big Bearing versions?

Both versions share the critical 917-04552A fitment dimensions and mounting path, including the 1-inch bore, 6-inch pulley, and counter-clockwise rotation. The Standard Black Pulley version provides the most flexible wiring setup, allowing either a direct flat side-by-side connection or the included T-style connector lead. The HD Big Bearing Upgrade uses an upgraded large-bearing clutch construction and a short wire lead with a T-style connector. Zip ties are included with the HD version to help secure and route the wiring during installation.

The HD version also provides easier access to the wrenchable D-spacer during installation, which can make it simpler to hold the crankshaft while applying final mounting-bolt torque. The Standard Black Pulley version has a more recessed spacer location.

Why do some Cub Cadet RZT 50 models use a different PTO clutch?

RZT 50 mowers were produced across multiple years and configurations. Depending on the mower model and original clutch number, some machines use alternative PTO clutch families such as 917-1709, 01008544P, or 917-04622. If your original clutch number is 917-04552A, 717-04552A, 917-04552, 717-04552, or Warner 5219-98, this is the correct replacement path.

Is Warner 5219-98 the same fitment as 917-04552A?

Warner 5219-98 is the Warner reference associated with the 917-04552A clutch path.

Is Xtreme X0390 the same fitment?

Xtreme X0390 is an aftermarket cross-reference for the 917-04552A / Warner 5219-98 PTO clutch family.

Does this clutch fit a Cub Cadet RZT 50?

Yes, this clutch is listed for select Cub Cadet RZT 50 applications, especially 2008-2012 50-inch deck models using the 917-04552A / Warner 5219-98 clutch path. Confirm your original clutch number, 1-inch bore, 6-inch pulley diameter, connector style, rotation, and anti-rotation setup before ordering. For the full RZT 50 PTO and deck parts route, see the Cub Cadet RZT 50 Parts Guide. If your original clutch number does not match 917-04552A, compare alternate clutch paths in the Cub Cadet RZT PTO Clutch Guide.

Does this clutch fit a Cub Cadet LTX1050?

Yes, this clutch is listed for select Cub Cadet LTX1050 applications from 2009-2011. Some later LTX1050 models used a different clutch path, so verify the original part number before ordering.

What bore size does this clutch use?

This clutch uses a 1-inch bore. Confirm your crankshaft size before ordering.

What pulley diameter does this clutch use?

This clutch uses a 6-inch pulley diameter. Confirm against your original clutch and product photos before ordering.

What rotation does this clutch use?

This clutch uses counter-clockwise rotation, commonly written as CCW. Match rotation to your original clutch before installing a replacement.

What are common signs of a failing PTO clutch?

Common symptoms include mower blades not engaging, the PTO clutch clicking but the blades not spinning, slipping under load, intermittent blade engagement, a burning smell, blown PTO fuse, or blades slowing down after the mower heats up. A worn coil can work cold, then weaken after 10 to 30 minutes of mowing.

What should I check before installing a new PTO clutch?

Inspect the PTO switch, wiring connector, battery voltage, deck belt, idler pulleys, blade spindles, anti-rotation pin or bracket, and crankshaft condition. A damaged anti-rotation setup, weak electrical supply, seized idler, or dragging spindle can damage a new clutch.

Can PTO Direct USA help me confirm fitment?

Yes. Email support@ptodirectusa.com with your mower model number, serial number, deck size, original clutch number, and clear photos of the old clutch. For the best fitment help, include photos of the clutch label or stamped number, wiring connector, pulley, anti-rotation bracket, and crankshaft area.

Working on a Cub Cadet RZT model? Read the Cub Cadet RZT PTO Clutch Guide before ordering if your original clutch number, pulley size, connector, or anti-rotation setup does not match this listing.

Need help comparing Warner numbers? Read the Warner 5219 PTO clutch cross-reference guide.

Need installation help? Read the PTO clutch installation guide.

Need a different PTO clutch? Browse the full electric PTO clutch catalog.