Description
Midland Industries MM-540806 DOT push-in 45° male-pipe elbow that joins 1/2″ air-brake tubing to a 3/8″ pipe port without compression nuts or sleeves. Meets FMVSS 571.106 for DOT-rated air brake plumbing on heavy-duty trucks, tractors, and trailers.
Specifications
| Manufacturer | Midland Industries |
|---|---|
| Part Number | MM-540806 |
| Part Type | DOT Push-In Air Brake Fitting (45° Male-Pipe Elbow) |
| Tubing Connection | 1/2″ OD Air Brake Tube |
| Pipe Connection | 3/8″ NPTF |
| DOT Approval | FMVSS 571.106 |
Cross References
This fitting replaces or is equivalent to the following part numbers:
- Also known as: 1880×8, 279PC8X6, 279PPDOT-8C, 279PPDOT-8C-Y, 95460021M, AQ54-DOT-8X6, PC1474-8C, PC14748C, S254PMT-8-6
Applications
DOT push-to-connect fittings are used in factory and replacement air-brake plumbing on:
- Class 6–8 truck and tractor air supply, service, and emergency lines
- Trailer air-spring, ABS, and parking-brake plumbing
- Glad hand, air-tank, and dryer port adapters
- School and transit bus air systems
Verify thread sizes and DOT compliance requirements before installation.









