Description
Midland Industries MM-540804 is a brass d.o.t. push-to-connect 45° male elbow for D.O.T.-compliant air brake systems, connecting 1/2″ OD nylon (SAE J844) or copper tubing to a 1/4″ MNPT port. Replaces AMC 02454-0804 and the equivalent Fairview PC1469 / PC1472 / PC1474 series and Phillips Industries push-to-connect numbers on Class 6–8 truck and trailer chassis.
Specifications
| Manufacturer | Midland Industries |
|---|---|
| Part Number | MM-540804 |
| Part Type | Brass D.O.T. Push-To-Connect 45° Male Elbow |
| Thread | 1/4″ MNPT |
| Tube/Hose Size | 1/2″ |
| Configuration | 45° elbow |
| Material | Brass |
| DOT Compliance | FMVSS 571.106 — air brake systems (except between frame & axle or towed/towing vehicles) |
| Working Pressure | 250 PSI typical (per Fairview PC1469 series rating) |
Cross References
This part replaces or is equivalent to the following part numbers:
- Anderson Metals (AMC): 02454-0804
- Fairview Fittings: PC1474-8B, PC14748B
- Also known as: 1880x8x4, 279PC-8×4, 279PC-8×6, 279PPDOT-8B, 279PPDOT-8B-Y, 95460013M, AQ54-DOT-8X4, DQ54-84, DQ54DOT-8X4, NP79-8-4, NP79-8-6
Applications
Heavy-duty Class 6–8 truck and trailer air brake systems (D.O.T. FMVSS 571.106 compliant) — connecting nylon (SAE J844) and copper air brake tubing to brake valves, gladhands, reservoirs, and chassis-routed air lines.
Representative platforms:
Used across all major Class 6–8 chassis lines including Freightliner Cascadia / Columbia / M2, Kenworth T680 / T880 / W900 / T800, Peterbilt 579 / 567 / 389 / 567, Volvo VNL / VNR, Mack Anthem / Granite / Pinnacle, International LT / HV / Lonestar, and Western Star 49X / 47X / 5700XE.
Verify your fitting size, thread type, and application pressure rating before ordering to confirm fitment.
