Description
QR-1C-style quick release valve (Predator HD 289714) for heavy-duty air brake systems. Direct replacement for Bendix 289714 / 289714N, used in spring brake / parking brake circuits where rapid air release is required. Common on Mack, Volvo, Freightliner, Kenworth, and Peterbilt service trucks.
Signs You Need a New Quick Release Valve
- Slow spring brake release after parking-brake knob is pushed in
- Audible air leak at the valve body
- Brakes drag or fail to fully release on takeoff
- Air pressure drop with parking brakes set
- Cracked or corroded valve housing
Specifications
| Manufacturer | Predator HD |
|---|---|
| Part Number | 289714 |
| Part Type | QR-1C Quick Release Valve |
| Differential Pressure | 0 psi |
| Supply Port | 3/8-18 NPT |
| Delivery Port | 1/4-18 NPT |
| Balance Port | 1/4-18 NPT |
| Application | Air brake / spring brake circuits |
Cross References
This part replaces or is equivalent to the following part numbers:
- Bendix: 289714, 289714N, 289714CX, 104576
- Haldex: KN32041
- Meritor: R955289714N, R955289714X
- Mack: 25175160, 20QE2288
- Freightliner: A1214980, 729013401
- Volvo: 8071356, 3081462, 85150276
- Navistar / International: 1676745C1
- Velvac: 034012
- Power Products: 289714P
- World American: WA289714
- Tectran: TV289714
- Automann: 170.289714
- S&S Truck Parts: S-C357
- OTR: OTR289714
Applications
This quick release valve fits the following applications:
- Class 7 and Class 8 trucks with FMVSS-121 air brake systems
- Tractors and straight trucks using spring-brake parking circuits
- Trailer and chassis air brake builds
Representative vehicles using this valve:
- Freightliner Cascadia, Columbia, Coronado, Century
- Kenworth T660, T680, T800, W900
- Peterbilt 379, 386, 389, 567, 579
- Mack CH, CHU, CXU, GU, Pinnacle
- Volvo VNL, VNM, VHD
- International ProStar, LT, 9900i
Verify port sizes and circuit application before installation to confirm fitment.
