This heavy-duty large flat idler pulley is designed to guide the back side of the mower deck belt and maintain correct belt routing on compatible Toro and Exmark zero-turn mowers. The five-spoke stamped-steel body combines high strength with reduced rotating mass, while the integrated sealed ball bearing supports smooth operation under demanding mowing conditions. It is intended as a direct replacement for Toro 136-5404 and earlier part numbers 132-5155, 126-9189, 116-4670, and 114-5895. Always verify the original part number, outside diameter, bore size, overall height, and belt-contact surface before ordering.
Key Features
- Large flat idler design for guiding the back side of compatible mower deck belts
- Five-spoke heavy-duty stamped-steel construction for strength and reduced rotating mass
- Integrated sealed ball bearing supports smooth and quiet rotation
- Matte black corrosion-resistant finish for outdoor power equipment use
- Precision bore and pulley dimensions for direct-replacement installation
- Helps maintain correct belt tracking and reduce belt slippage
- Designed for select Toro Z Master, Titan HD, GrandStand and Exmark zero-turn mower decks
Replaces OEM / Cross Reference
| Brand / Supplier |
Reference Number(s) |
| Toro Current OEM |
136-5404 |
| Toro Superseded Numbers |
132-5155, 116-4670, 114-5895 |
| Additional Aftermarket Cross Reference |
126-9189 |
| Product Family |
6.75-inch large flat idler pulley with sealed bearing |
Fits Brands
Toro and Exmark zero-turn mowers using the listed OEM part numbers and matching pulley dimensions.
Fits Models / Mower Families (Partial List)
Select Toro Z Master Commercial 2000, 3000, 5000 and 6000 Series, Titan HD and GrandStand models, plus select Exmark Radius, Lazer Z, Pioneer, Staris and Quest mower decks using Toro 136-5404 or its superseded numbers. Fitment varies by model, deck size, serial range, and belt routing. Verify the original pulley number and dimensions before ordering.
Package Contents
1 x flat idler pulley with installed sealed bearing
Website Listing Information
| Product Title |
Flat Idler Pulley 136-5404 for Toro Z Master, Titan HD, GrandStand and Exmark Zero-Turn Mowers |
| URL Handle |
gm-ip002-flat-idler-pulley-136-5404 |
| Meta Title |
Flat Idler Pulley 136-5404 for Toro & Exmark Zero-Turn Mowers | Parts-Man |
| Meta Description |
Heavy-duty 6.75-inch flat idler pulley with sealed bearing for compatible Toro and Exmark zero-turn mower decks. Replaces 136-5404, 132-5155, 126-9189, 116-4670 and 114-5895. |
| Search Tags |
GM-IP002, idler pulley, flat idler pulley, zero turn mower pulley, Toro 136-5404, Toro 132-5155, 126-9189, 116-4670, 114-5895, Z Master, Titan HD, GrandStand, Exmark Lazer Z |
Installation and Safety Notes
- Confirm the mower model, deck size, serial range, OEM part number, pulley diameter, bore, and width before ordering.
- Park on a level surface, remove the ignition key, disconnect the spark plug or battery, and allow moving parts to stop before service.
- Release belt tension according to the equipment manufacturer instructions before removing the old pulley.
- Inspect the belt, mounting bolt, spacer, washer, and tension arm; replace worn or damaged components.
- Tighten hardware to the mower manufacturer specification and verify that the pulley rotates freely and the belt is correctly routed before operation.
