Aftermarket Replacement for Toro 112-3977 Shoulder Bolt, 1-603299 Deck Wheel & 3/8-16 Lock Nut Kit
Item Specifics
- Part Number: 112-3977, 1-603299
- Brand: Aftermarket Replacement for Toro
- Type: Shoulder Bolt, Deck Wheel, Lock Nut Kit
- Quantity: 4 Pieces (2 Bolts, 1 Wheel, 1 Nut)
- Application: Deck Rollers
Product Description
This comprehensive aftermarket replacement kit includes two shoulder bolts, one deck wheel, and one 3/8-16 flange nylon lock nut. Designed specifically for deck roller applications, this kit provides all the necessary components to secure and maintain your mower’s deck wheels without the OEM price tag.
These aftermarket components are engineered to replace Genuine Toro 112-3977 shoulder bolts and 1-603299 deck wheels. Toro has utilized this style of shoulder bolt in deck roller assemblies since 2007, and it remains the standard for current installations. The included nylon lock nut is designed to prevent loosening under heavy vibration, ensuring a secure fit.
Replace worn, stripped, or missing hardware with this convenient kit to restore proper deck wheel function and extend the life of your equipment. Red Rock Turf provides quality aftermarket parts and hardware to keep your machinery running at its best.
Included Components
Toro Hardware Kit (Shoulder Bolt, Deck Wheel & Lock Nut) – Grouped Compatible Models
| Category / Mower Series | 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 (5000) | 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.
Compatible Models
This part fits multiple models. Please verify compatibility using your equipment model and serial number. Contact Red Rock Turf for fitment assistance.
Always verify fitment using your equipment model and serial number before ordering.
Contact Red Rock Turf if assistance is needed.
Key Details
- Complete aftermarket replacement kit for deck rollers
- Includes 2 shoulder bolts (replaces Toro 112-3977)
- Includes 1 deck wheel (replaces Toro 1-603299)
- Includes 1 3/8-16 flange nylon lock nut
- Toro has used this bolt style since 2007
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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