The Toro 139-1087 Idler Arm Assembly is a genuine OEM replacement part designed to maintain proper tension on the deck drive belt in Toro Z Master commercial zero-turn mowers. Engineered for durability and precise fitment, this steel idler arm helps ensure consistent blade speed and smooth operation, reducing belt slip and wear during heavy mowing tasks.
Fitment:
| Model |
Description |
| 74048TE |
Professional 4000 Series MyRIDE® Petrol Z Master® 122 cm 74048TE |
| 74000 |
4000 Series 48 in. (122 cm) 24.5 hp 852cc |
| 74002 |
4000 Series 52 in. (132 cm) 25.5 hp 852cc |
| 74004 |
4000 Series 60 in. (152 cm) 25.5 hp 852cc |
| 74050 |
4000 Series 52 in. (132 cm) 25.5 hp 852cc |
| 74054 |
4000 Series 60 in. (152 cm) 25.5 hp 852cc |
| 74035 |
4000 Series 60 in. (152 cm) 26.5 hp 747cc |
| 74052 |
4000 Series MyRIDE® HDX 52 in. (132 cm) 31 hp 999cc |
| 74055 |
4000 Series MyRIDE® HDX 60 in. (152 cm) 31 hp 999cc |
| 74010 |
4000 Series HDX Pro 52 in. (132 cm) 31 hp 999cc |
| 74015 |
4000 Series HDX Pro 60 in. (152 cm) 31 hp 999cc |
| 74000TA |
4000 Series Z Master® 122 cm (74000TA) |
| 74050TA |
4000 Series Z Master® 132 cm (74050TA) |
| 74054TA |
4000 Series Z Master® 152 cm (74054TA) |
| 74055TA |
4000 Series Z Master® MyRIDE® HDX 152 cm (74055TA) |
| 74053TE |
Professional 4000 Series MyRIDE® HDX Petrol Z Master® 132 cm 74053TE |
| 74056TE |
Professional 4000 Series MyRIDE® HDX Petrol Z Master® 152 cm 74056TE |
| 74020 |
4000 Series HDX Pro XL 60 in. (152 cm) 35 hp 999cc |
| 74022 |
4000 Series HDX Pro XL 72 in. (183 cm) 35 hp 999 cc |
| 77281 |
2000 Series 48 in. (122 cm) 24.5 hp 708 cc |
| 77283 |
2000 Series 52 in. (132 cm) 24.5 hp 708 cc |
| 77285 |
2000 Series 60 in. (152 cm) 24.5 hp 708 cc |
| 77288 |
2000 Series HDX Pro 60 in. (152 cm) 28 hp 810 cc |
| 77291 |
2000 Series MyRIDE® HDX 52 in. (132 cm) 23.5 hp 726 cc |
| 77294 |
2000 Series MyRIDE® HDX 60 in. (152 cm) 23.5 hp 726 cc |
| 77281TA |
2000 SERIES 24.5 HP TORO 48-IN |
| 77291TA |
2000 SERIES 23.5 HP KAW FX 52-IN MYRIDE |
| 77294TA |
2000 SERIES 23.5 HP KAW FX 60-IN MYRIDE |
| 74024 |
4000 Series MyRIDE® HDX 72" 35 hp 999cc |
| 74057 |
4000 Series MyRIDE® HDX 60" 35 hp 999cc |
| 74010HD |
Z MASTER COMMERCIAL 4000 SERIES - THD |
