Description
Genuine Paccar F50-1548 OEM lower radiator hose – a 4-ply silicone 45° elbow with 2.5″ inside diameter on both ends, used as the lower coolant connection on Kenworth T660/T680/T800/T880 and Peterbilt 387/388/389/579/587 trucks. Silicone construction holds up to high coolant temperatures and pressure cycles better than EPDM rubber, making it the durable replacement for the original lower elbow.
Specifications
| Manufacturer | Paccar (Genuine OEM) |
|---|---|
| Part Number | F50-1548 |
| Part Type | Lower Radiator Hose, 45° Elbow |
| Material | 4-Ply Silicone |
| Inside Diameter | 2.5 in (both ends) |
| Centerline Long Side | 5.125 in |
| Centerline Short Side | 2.0 in |
| Overall Length | 6.476 in |
| Bend Angle | 45° |
Cross References
This hose replaces or is equivalent to the following part numbers:
- Paccar (OEM): F50-1548, F501548
- Automann: 561.75548
For an aftermarket equivalent, see the 2.5″ Kenworth T680 Radiator Hose Elbow replacement.
Applications
This radiator hose fits the following trucks:
- Kenworth T660, T680, T800, T880
- Peterbilt 387, 388, 389, 579, 587
Verify your truck’s lower radiator routing and connection diameters before ordering. The F50-1548 is the lower elbow only – pair with F50-6308 if the upper coolant hose also requires replacement.









