Description
The OTR 401148 is an aftermarket pilot-operated rapid-dump air-suspension valve that replaces Haldex 90554335 / 90554611 / 3022873 on Type CR height-control systems. Normally open design exhausts air from the air springs when pilot pressure is applied to the control port, lowering the suspension for trailer coupling, dock work, or service. Gold body identifies the normally open variant; 1/8 in NPT ports with 1/4 in and 3/8 in compression fittings included for versatile installation.
Signs You Need a New Dump Valve
- Suspension fails to dump when the dash switch is activated
- Air leaks continuously from the valve body or ports
- Suspension dumps on its own without switch activation
- Slow or inconsistent suspension response when dumping or refilling
Specifications
| Manufacturer | OTR |
|---|---|
| Part Number | OTR401148 |
| Part Type | Rapid Dump Air Suspension Valve |
| Valve Type | Normally Open (pilot-operated) |
| Port Size | 1/8 in NPT (all ports) |
| Fittings Included | 1/4 in & 3/8 in compression with 1/8 in NPT adaptors |
| Body Color | Gold (identifies normally open) |
| Application | Type CR height-control valve systems |
Cross References
This part replaces or is equivalent to the following part numbers:
- Haldex: 90554335, 90554611, 3022873
- Midland: MID90554335
- HDX: HDX90554335
- Air Controls: AC202
- Also known as: 070-90554335, 024-39315
Applications
This rapid-dump valve is used with Type CR height-control valve systems on the following Class 8 and trailer applications:
- Freightliner Cascadia, Columbia, Century, Coronado
- Kenworth T680, T880, W900, T660, T600
- Peterbilt 579, 389, 386, 379, 567
- International LT, LoneStar, ProStar
- Volvo VNL, VNR, VHD
- Mack Anthem, Pinnacle, Granite
- Western Star 4900, 5700XE
- Air-ride trailers and tandem-axle suspensions
For the normally closed (silver-body) variant, see Haldex 90554902.
This is the dump valve only — it does not include the height-control valve (sold separately as Haldex 90054007 or 90554334 with integrated dump valve). Verify your current valve type and port sizes before ordering. Apply thread sealant to all NPT connections during installation.
