1686880SM PTO Clutch Replacement for Simplicity, Snapper, Murray | Replaces 1687746YP, 1717664SM

Overview

This 1686880SM PTO clutch replacement is an aftermarket electric PTO clutch for select Simplicity, Snapper, Murray, and compatible Craftsman mower applications using the 1686880SM / Ogura GT1-BS03 clutch path.

This clutch replaces 1686880SM, 1686880, 1687746YP, 1687746, 1717664SM, 1717664, 1720532SM, and 1720532. It also cross-references Ogura GT1-BS03, Xtreme X0486, Stens 255-783X, Stens 255-354X, and Rotary 15781.

Built with a 5.31-inch pulley diameter, 1-inch crankshaft bore, and CCW rotation, this clutch is designed to restore dependable mower deck blade engagement when matched to the correct original clutch number and physical specs.

Important fitment warning: This is the 1686880SM / Ogura GT1-BS03 clutch path. Do not use this listing for Scag 462715 / 462610, Xtreme X0651, MTD 01008434, Cub Cadet 759-05064, Ferris 5023100SM, or 1757359YP applications. Those are different clutch paths and should stay separate.

Key Features

• Aftermarket electric PTO clutch replacement for listed Simplicity, Snapper, Murray, and compatible Craftsman applications
• Crankshaft Bore: 1"
• Pulley Diameter: 5.31" / 5-5/16"
• Rotation: CCW from pulley side
• Voltage: 12V DC
• Overall Height: approximately 3-3/16"
• Belt Compatibility: 1/2" or 5/8" belt on supported applications
• Connector Style: integrated pigtail / connector style as shown in product photos
• Encapsulated electromagnetic coil for reliable blade engagement
• High-temperature bearing design for mower deck operating conditions
• Fully assembled and ready to install after fitment verification

Compatible Brands & Models

This PTO clutch fits select mower platforms using the 1686880SM / Ogura GT1-BS03 specification. Fitment depends on original clutch number, pulley diameter, bore size, rotation, connector style, belt routing, and mower configuration.

Simplicity Applications

• Simplicity Regent Series: select applications
• Simplicity Broadmoor Series: select applications
• Simplicity Baron / Baron XL Series: select applications
• Simplicity Conquest, Pacer, and Rapid Series: select applications using the 1686880SM clutch path

Snapper Applications

• Snapper 150Z / 200Z Series: select zero-turn applications
• Snapper 285Z / 300Z Series: select zero-turn applications
• Snapper RZT / ZT Twin Stick Series: select applications
• Snapper LT, YT, RD, and SC Series: verify original clutch number before ordering

Murray & Craftsman Applications

• Murray EZT2042, ZT1644E, ZT7000, ZTS6000, ZTS7500: select applications
• Craftsman ZTL7500, ZT7000, ZTS6000, ZTS7000, ZTS7500: select applications using the 1686880SM clutch path

Fitment note: Model names alone are not enough to confirm compatibility. Always match the original clutch number and compare the 5.31-inch pulley, 1-inch bore, CCW rotation, connector style, and product photos before ordering.

Replaces OEM Part Numbers

• Simplicity / Briggs: 1686880SM, 1686880, 1687746YP, 1687746
• Snapper / Simplicity: 1717664SM, 1717664, 1720532SM, 1720532
• Murray / Craftsman: verify original clutch number against 1686880SM, 1687746YP, 1717664SM, or 1720532SM before ordering
• Ferris: 1757359, 1757359YP

Cross-Reference Aftermarket Numbers

• Ogura: GT1-BS03, GT1BS03
• Ogura: MA-GT-JD11, MAGTJD11
• Xtreme: X0486
• Stens: 255-783X, 255-354X
• Rotary: 15781

Fitment note: These numbers are part of the 1686880SM replacement path when the original clutch matches the correct bore size, pulley diameter, rotation, wiring connector, pulley offset, and anti-rotation setup. Always compare the original clutch before installing.

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced 5.31" pulley
• Pre-installed bearing assembly
• Encapsulated electromagnetic coil
• Integrated connector / pigtail style as shown in product photos

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

Does this PTO clutch replace 1686880SM?

Yes. This clutch replaces 1686880SM when used on compatible Simplicity, Snapper, Murray, and Craftsman mower applications using the same 5.31-inch pulley, 1-inch bore, CCW rotation, and connector style.

Does this replace 1687746YP?

Yes. 1687746YP is part of the same confirmed replacement path as 1686880SM. Match your original clutch number and physical specs before ordering.

Does this replace 1717664SM or 1720532SM?

Yes. 1717664SM and 1720532SM are included in the 1686880SM / Ogura GT1-BS03 replacement path.

Is Ogura GT1-BS03 the same clutch path?

Yes. Ogura GT1-BS03 is the Ogura clutch architecture associated with this 1686880SM replacement path.

Is Xtreme X0486 the correct aftermarket cross-reference?

Yes. Xtreme X0486 is the correct Xtreme cross-reference for this clutch path.

Is Xtreme X0651 the same as 1686880SM?

No. Xtreme X0651 is a different Scag commercial clutch path and should not be used as a replacement for 1686880SM. It uses different fitment geometry and must stay separate.

Does this replace Cub Cadet 759-05064 or MTD 01008434?

No. Do not merge this 1686880SM listing with Cub Cadet 759-05064 or MTD 01008434. Those belong to a different MTD/Cub Cadet clutch path with a different pulley specification.

Does this fit Scag mowers?

This listing should not be used for Scag clutch numbers such as 462715, 462610, or Scag applications cross-referenced to Xtreme X0651. Those are different clutch paths.

What bore size does this clutch use?

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

What pulley diameter does this clutch use?

This clutch uses a 5.31-inch pulley diameter, also commonly listed as 5-5/16 inches. Pulley size matters for proper deck belt tension.

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.

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. Include photos of the clutch label or stamped number, pulley, bore, wiring connector, and anti-rotation bracket area.

Need help checking crankshaft size? Read the PTO clutch bore size guide.

Need help with rotation? Read the PTO clutch rotation guide.

If your old clutch will not come off the crankshaft, read the PTO clutch stuck on crankshaft guide before prying or hammering.

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