Part # 251709
Threaded Leaf Spring Bushing
The TB78 Threaded Bushing is a heavy-duty suspension component primarily used in the front spring assemblies of Mack and Volvo trucks, including Mack CHN, CHU Pinnacle; CTP, GU Granite; TD Titan; CXN Vision; CXP, CXU Pinnacle front suspensions, and Volvo VN, VT, VHD series. I Designed for Volvo VN/VT/VHD and Mack CHN/CHU/CTP/GU/CXN/CXU front leaf spring suspensions to reduce vibration and maintain proper alignment. Used with grease seals to protect against dirt and moisture contamination in heavy-duty suspension applications. Direct replacement for OEM bushings; helps restore smooth operation and extend component life when original bushings wear or crack.
The TB78 Threaded Bushing is a heavy-duty suspension component primarily used in the front spring assemblies of Mack and Volvo trucks, including Mack CHN, CHU Pinnacle; CTP, GU Granite; TD Titan; CXN Vision; CXP, CXU Pinnacle front suspensions, and Volvo VN, VT, VHD series. I
- Designed for Volvo VN/VT/VHD and Mack CHN/CHU/CTP/GU/CXN/CXU front leaf spring suspensions to reduce vibration and maintain proper alignment.
- Used with grease seals to protect against dirt and moisture contamination in heavy-duty suspension applications.
- Direct replacement for OEM bushings; helps restore smooth operation and extend component life when original bushings wear or crack.
- Designed for Volvo VN/VT/VHD and Mack CHN/CHU/CTP/GU/CXN/CXU front leaf spring suspensions to reduce vibration and maintain proper alignment.
- Used with grease seals to protect against dirt and moisture contamination in heavy-duty suspension applications.
- Direct replacement for OEM bushings; helps restore smooth operation and extend component life when original bushings wear or crack.
- Threaded steel bushing (sold individually or in 4-count packages depending on supplier).
- Grease seals typically sold separately.
| Attribute | Value |
|---|---|
| Universal Product Code (UPC) | 601961388239 |
| Name / Brand | Part Number | Notes |
|---|---|---|
| Hendrickson | 051358-000, 051364-000, 051462-000 (51358, 51364, 51462) | Direct Interchange |
| Mack OE | 10QK3114M, 10QK3115M, 10QK3120M | Direct Interchange |
| Dayton / TruckSpring | TB-78, TWTB-78 | Direct Interchange |
| Volvo OE | 1075724, 1075726, 20409623, 20409632, 20526026, 85134672 | Direct Interchange |
| Part # | Image | Product Name | Brand |
|---|---|---|---|
| 251701 |
|
Threaded Spring Pin |
|
| 251702 |
|
Threaded Leaf Spring Bushing |
|
| 251703 |
|
Threaded Leaf Spring Bushing |
|
| 251704 |
|
Threaded Spring Pin |
|
| 251705 |
|
Threaded Spring Pin |
|