070-0050-00 PTO Clutch for Bad Boy MZ Magnum 48, 54 | Warner 5219-199

Overview

This 070-0050-00 electric PTO clutch replacement is an HD Big Bearing billet PTO clutch for select Bad Boy MZ Magnum 48-inch and 54-inch zero-turn mowers using the 070-0050-00 / Warner 5219-199 clutch path.

This upgraded clutch is rated at 130 ft-lb of clutch torque, compared with the 105 ft-lb rating of the original Warner 5219-199. It combines the correct critical 070-0050-00 fitment path with an upgraded large-bearing design and billet pulley construction.

Bad Boy part number 070-0050-00 originally crosses to Warner 5219-199. Warner later replaced 5219-199 with Warner 5219-98. The Warner reference path uses a 1-inch crankshaft bore, 6-inch pulley, 12 VDC coil, and CCW rotation.

Confirmed Bad Boy applications include select MZ Magnum 48 and MZ Magnum 54 configurations with Kohler KT725, Kohler KT740, and Kawasaki FR651V engines.

Key Features

• HD aftermarket electric PTO clutch replacement for Bad Boy 070-0050-00 applications
• Bad Boy Part Number: 070-0050-00
• Original Warner Cross-Reference: 5219-199
• Warner Replacement Path: 5219-98
• HD Clutch Torque Rating: 130 ft-lb
• Original Warner Torque Rating: 105 ft-lb
• Crankshaft Bore: 1 inch
• Pulley Diameter: 6 inch
• Rotation: CCW from pulley side
• Voltage: 12 VDC
• HD Construction: upgraded large-bearing configuration
• Pulley Construction: billet-style pulley
• Connector: short wire lead with T-style connector as shown in product photos
• Installation Access: accessible wrenchable D-spacer provides a convenient holding point while applying final mounting-bolt torque
• Integrated electric clutch and brake assembly
• Fully assembled and ready to install

Torque rating note: The 130 ft-lb specification above is the clutch's rated torque capacity. It is not the mounting-bolt tightening torque. Always use the correct mounting-bolt torque specification for the mower, engine, bolt, and clutch installation.

Compatible Brands & Model Series

This PTO clutch is specifically listed for select Bad Boy MZ Magnum applications using the 070-0050-00 clutch path.

Confirmed Bad Boy MZ Magnum Applications

• MZ Magnum 48: 48-inch deck with Kohler KT725 engine
• MZ Magnum 54: 54-inch deck with Kohler KT740 engine
• MZ Magnum 48: 48-inch deck with Kawasaki FR651V engine
• MZ Magnum 54: 54-inch deck with Kawasaki FR651V engine

Bad Boy parts information identifies 070-0050-00 as the clutch used in this MZ Magnum configuration family.

Production-year warning: Bad Boy changed PTO clutch configurations on later MZ and MZ Magnum machines. Later applications may use 070-0055-00 or another clutch. Match the number from the original clutch or verify the mower model and serial number before ordering.

Replaces OEM Part Numbers

• Bad Boy: 070-0050-00

Aftermarket Cross-Reference Numbers

• Warner Original: 5219-199
• Warner Replacement: 5219-98, 521998

Cross-reference note: Warner directly identifies 070-0050-00 with Warner 5219-199 and lists 5219-98 as the replacement for 5219-199.

Common Symptoms of a Failing PTO Clutch

• Blades will not engage when the PTO switch is activated
• PTO clutch clicks but the mower deck does not turn
• Blades engage when cold and stop after the mower heats up
• Intermittent blade engagement under load
• Deck belt slips, squeals, or smokes during engagement
• Burning smell or excessive heat near the PTO clutch
• Grinding, bearing noise, or vibration from the clutch area
• PTO fuse repeatedly blows because of a clutch coil or wiring fault
• Clutch remains mechanically engaged with the PTO switch off

What’s Included

• 1 complete HD Big Bearing electric PTO clutch assembly
• 6-inch billet-style pulley
• Upgraded large-bearing construction
• Encapsulated electromagnetic coil assembly
• Integrated brake assembly
• Short wire lead with T-style connector
• Accessible wrenchable D-spacer configuration

Why Buy From PTO Direct USA?

• Fast USA shipping
• Fitment guarantee
• 1-year warranty
• Fitment-first product descriptions
• Clear Bad Boy and Warner part-number routing
• Clear product photos showing the actual pulley, wiring, and clutch construction
• Installation and troubleshooting resources before and after purchase
• Helpful support for mower owners and repair shops

Need Help Confirming Fitment?

Email support@ptodirectusa.com with your Bad Boy mower model, serial number, engine model, deck size, or original PTO clutch number.

FAQ

What PTO clutch replaces Bad Boy 070-0050-00?

Bad Boy 070-0050-00 originally crosses to Warner 5219-199. Warner later replaced 5219-199 with Warner 5219-98. This HD clutch is specifically offered for the 070-0050-00 replacement path.

What Warner clutch crosses to Bad Boy 070-0050-00?

The original Warner cross-reference for Bad Boy 070-0050-00 is Warner 5219-199. Warner lists 5219-98 as the replacement for 5219-199.

What is the torque rating of this HD PTO clutch?

This HD Big Bearing clutch is rated at 130 ft-lb of clutch torque. The original Warner 5219-199 is rated at 105 ft-lb. The 130 ft-lb figure describes the clutch's torque capacity and should not be confused with the mounting-bolt tightening specification.

Does this clutch fit a Bad Boy MZ Magnum 48?

Bad Boy parts information confirms 070-0050-00 on MZ Magnum 48-inch applications using the Kohler KT725 and Kawasaki FR651V engine configurations covered by the applicable MZ Magnum parts manual. Match the original clutch number and mower serial information before ordering.

Does this clutch fit a Bad Boy MZ Magnum 54?

Bad Boy parts information confirms 070-0050-00 on MZ Magnum 54-inch applications using the Kohler KT740 and Kawasaki FR651V engine configurations covered by the applicable MZ Magnum parts manual. Match the original clutch number and mower serial information before ordering.

Does 070-0050-00 fit every Bad Boy MZ Magnum?

No. Bad Boy used different PTO clutches across MZ and MZ Magnum production years and configurations. Later machines may use 070-0055-00 or another part number. Do not order by the MZ Magnum name alone.

Is Warner 5219-199 the same replacement path as Warner 5219-98?

Yes. Warner identifies 5219-98 as the replacement for 5219-199. The Warner reference clutches share the critical 1-inch bore, 6-inch pulley, 12 VDC, CCW rotation, and standard mounting path, although their wiring configurations differ.

What is different about the HD Big Bearing clutch?

The HD version uses a 130 ft-lb clutch rating, upgraded large-bearing construction, and billet-style pulley design. It also provides easier access to the wrenchable D-spacer, which can make it simpler to keep the crankshaft from turning while applying final mounting-bolt torque.

What bore size does Bad Boy 070-0050-00 use?

The confirmed Warner 070-0050-00 replacement path uses a 1-inch crankshaft bore. Match this to the original clutch before ordering.

What pulley diameter does 070-0050-00 use?

The confirmed Warner reference uses a 6-inch pulley diameter. Also compare pulley offset and belt alignment to the original clutch.

What rotation does this PTO clutch use?

This clutch uses counter-clockwise rotation when viewed from the pulley side, commonly written as CCW from pulley side.

Can I order this clutch based only on appearance?

No. Match the original clutch number first, then confirm the 1-inch bore, 6-inch pulley, CCW rotation, connector, anti-rotation setup, pulley offset, mower model, and serial number. Similar-looking PTO clutches are not automatically interchangeable.

Can PTO Direct USA help confirm which Bad Boy PTO clutch I need?

Yes. Email support@ptodirectusa.com with your mower model number, serial number, engine model, deck size, and original PTO clutch number. Clear photos of the old clutch and connector are especially helpful.

Getting ready to install your PTO clutch? Review the PTO Clutch Installation Guide for crankshaft preparation, mounting-bolt torque guidance, wiring checks, burnishing, and the final torque check.

Need a different Bad Boy clutch? Browse the Bad Boy PTO clutch collection or shop the full electric PTO clutch catalog.