Aftermarket Replacement for Toro 112-3977 Shoulder Bolt & 1-603299 Deck Wheel Kit
Item Specifics
- Part Number: 112-3977, 1-603299 (Aftermarket Replacement)
- Brand: Aftermarket (Fits Toro)
- Type: Shoulder Bolt, Deck Wheel, Lock Nut Kit
- Quantity: 6 Pieces (2 Bolts, 2 Wheels, 2 Nuts)
- Application: Deck Rollers
Product Description
This high-quality aftermarket hardware kit includes two shoulder bolts (fits Toro 112-3977), one deck wheel (fits Toro 1-603299), and 3/8-16 flange nylon lock nuts. Designed specifically for deck roller applications, this kit provides all the necessary components to secure and maintain your mower’s deck wheels at a fraction of the OEM cost.
Toro has utilized the 112-3977 shoulder bolt design in deck roller assemblies since 2007, and it remains the standard for current installations. This aftermarket replacement kit is engineered to provide a precise fit and reliable performance, ensuring your deck rollers function correctly under heavy use and vibration.
Replace worn, stripped, or missing hardware with this complete kit to restore proper deck wheel function and extend the life of your equipment. Red Rock Turf provides quality aftermarket parts to keep your machinery running at its best.
Included Components
| Part Number | Description | Quantity |
|---|---|---|
| 112-3977 | Shoulder Bolt (Aftermarket Replacement) | 2 |
| 1-603299 | Deck Wheel (Aftermarket Replacement) | 2 |
| N/A | 3/8-16 Flange Nylon Lock Nut | 2 |
Compatible Models
Toro Hardware Kit (Shoulder Bolt, Deck Wheel & Lock Nut) – Grouped Compatible Models
| Equipment Category | Model Numbers |
|---|---|
| Groundsmaster 3200 / 3300 Series | 31900, 31901, 31902, 31903, 31907, 31909, 31970, 31971, 31972, 31973, 31974, 31975 |
| XLS Lawn Tractor | 71255 |
| Zero‑Turn (MZ19H / G‑Series) | 725058016, 725058046, 725058056, 725058066, 725058076, 725058086, 94360, 94370, 94372, 94375, 94806, 94818 |
| TimeCutter ZS Series | 74386, 74387, 74389, 74390, 74395, 74657, 74660, 74661, 74665, 74667 |
| TimeCutter SS Series | 74616, 74622, 74623, 74624, 74625, 74626, 74627, 74628, 74630, 74631, 74632, 74633, 74635, 74636 |
| TimeCutter MX Series | 75745W |
| TimeCutter SW Series | 74675, 74676, 74680 |
| TimeCutter ZX / Z Series | 74406, 74407, 74603, 74360, 74363, 74365, 74366, 74370, 74372, 74373, 74374, 74375, 74376, 74380, 74381, 74391, 74398, 74399 |
| TimeCutter General | 75750, 75750W |
| Titan / Titan ZX Series | 74812, 74813, 74814, 74815, 74816, 74818, 74820, 74822, 74823, 74824, 74830, 74832, 74833, 74840, 74841, 74842, 74843, 74845, 74871, 74872, 74873, 74912, 74914, 74920, 74924 |
| Precision Z Series | 81270, 81271 |
Note: Includes shoulder bolt (112-3977), deck wheel (1-603299), and 3/8-16 flange lock nut. Toro has used this hardware since 2007 and continues to use it. Total compatible models: 170+. If unsure, provide model & serial for verification.
Key Details
- High-quality aftermarket replacement parts
- Includes two shoulder bolts (fits 112-3977)
- Includes one deck wheel (fits 1-603299) and two 3/8-16 lock nuts
- Shoulder bolt design has been used by Toro since 2007
- Designed for deck roller applications
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 but 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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