For Toro 120-3335 Synchronous Belt w/ Pix 1203335 & 2 Genuine 161-4815 Idler Pulleys
📑 Table of Contents
- Item Specifics
- Product Description
- Included Components
- Technical Overview
- Common Wear Symptoms
- Compatible Models
- Key Features
- Notes
📌 Item Specifics
- Brand: Toro / Pix
- Main Part Number: 120-3335
- Pix Replacement Number: 1203335
- Included Components: Synchronous Belt + 2 Idler Pulleys
- Idler Pulley Part Number: 161-4815
- Superseded Part Number: 131-4529
- Application: TimeMaster & TurfMaster Series
- OEM Usage Start: 2012–Present
📖 Product Description
This kit includes a Toro 120-3335 synchronous belt (Pix 1203335 equivalent) along with two genuine 161-4815 idler pulleys. Designed for Toro TimeMaster platforms, this assembly ensures proper blade synchronization and smooth deck operation.
The synchronous belt system is essential for maintaining dual-blade timing. Over time, both the belt and idler pulleys wear due to heat, tension, and continuous operation. Replacing them together restores OEM-level performance and prevents uneven cutting, noise, and belt slippage.
📦 Included Components
| Qty | Component | Part Number | Function |
|---|---|---|---|
| 1 | Synchronous Drive Belt (Pix / Toro Equivalent) | 120-3335 / 1203335 | Maintains blade timing and synchronized cutting operation |
| 2 | Idler Pulley | 161-4815 | Maintains belt tension and alignment during operation |
🔧 Technical Overview
The synchronous belt system ensures precise dual-blade timing on Toro TimeMaster and TurfMaster mowers. The idler pulleys maintain consistent tension and alignment throughout operation.
Failure of either component can result in loss of synchronization and reduced cutting efficiency.
⚠️ Common Wear Symptoms
- Uneven or missed cutting patterns
- Noise from belt or deck area
- Belt slipping or loss of tension
- Visible pulley wear or wobble
- Reduced cutting performance
🚜 Compatible Models
| Category / Deck Size | Compatible Models |
|---|---|
| 30in (76cm) TimeMaster Mowers – 30 inch version | 20199, 20200, 21199, 21199HD, 21200 |
| 76cm TimeMaster Mowers – metric equivalent | 20975, 20976, 20977, 20978, 21810 |
✔ Key Features
- ✔ Complete drive system solution
- ✔ Includes belt + 2 idler pulleys
- ✔ Maintains blade synchronization
- ✔ Restores OEM performance
- ✔ Designed for TimeMaster & TurfMaster platforms
📌 Notes
Toro introduced this belt system in 2012 and continues using it on current production models.
We at Red Rock Turf are a stocking distributor for Briggs and Stratton, Kohler, Kawasaki and Toro. We don’t only sell their OEM parts we also use them on our equipment repairs and rebuilds. If there is something you need and don’t see it, then please feel free to get a hold of us, call or text 435-213-5854.
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