Description
Phillips 12-136 is the blue service-line gladhand for the trailer side of a tractor-trailer air brake coupling, with a 38° angle mount and bottom port. The 3/8″ female pipe thread accepts a standard service air-line fitting; blue identifies the service (signal) line on pre-trip. For the matching emergency-line coupler, see Phillips 12-138 (red).
Specifications
| Manufacturer | Phillips |
|---|---|
| Part Number | 12-136 |
| Part Type | Trailer-mount gladhand (service line) |
| Color | Blue (service / signal) |
| Mount Angle | 38° angle mount |
| Port Location | Bottom port |
| Port Size | 3/8″ female pipe thread (FPT) |
| Specification | SAE J318 |
Typical Uses
- Trailer-side service-line air brake coupling on tractor-trailer combinations
- Replacement for a damaged, leaking, or seized service gladhand
- New trailer build — paired with a red emergency gladhand (Phillips 12-138)
For the red emergency-line counterpart, see Phillips 12-138.
Verify mount angle and port location on the trailer crossmember before ordering. Replace the gladhand seal whenever a coupling is rebuilt.


