Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.
Whether you're seeking OEM replacement parts or upgrades, Fortpro provides a diverse selection of components backed by a global reputation for quality and innovation. Trust Fortpro for the parts you need to keep your vehicles on the road longer and stronger.
Basic Part Information6 attributes
| Product Line | Brakes |
|---|---|
| Category Name | Air Brake Valves |
| Part Type | Front Axle Valve |
| Alternate Part Name | Limiting & Quick Release Valve, Pressure Proportioning Valve |
| Model | LQ-4 |
| OEM Part Number | 289144 |
Application/Fitment Attributes8 attributes
| Application Type | Semi-Trucks, Heavy Duty Trucks |
|---|---|
| Compatible Repair Kit Part Number | F224623 |
| Delivery Port Orientation (CW from Mounting) | 180 deg. |
| Delivery Port Size | 3/8-18 NPT |
| Exhaust Port | Open |
| Mounting Hole Qty | 2 |
| Mounting Hole Size | Ø .34 in. |
| Supply Port Size | 3/8-18 NPT |
Dimensional/Physical Attributes1 attribute
| Material | Die-cast Zinc |
|---|
Technical/Performance Attributes4 attributes
| Maximum Operating Temperature | 200 deg. F (93 deg. C) |
|---|---|
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Nominal Equalizing Pressure (Blend Back) | 60 psi |
| Nominal Hold-Off Pressure | 4 psi |
Packaging / Logistics Attributes:1 attribute
| Net Weight | 1.00 lb. |
|---|
Intended Application
- Front Axle/Steering for Trucks and Heavy Commercial Vehicles. Its primary function is to reduce brake application pressure on the front axle during normal braking, preventing lock-ups and improving vehicle stability. This type of valve is common in pneumatic brake systems on trucks and buses, especially those with air brake systems that require precise control of the pressure applied to the front brake chambers.
- Automann: 170289144
- Bendix: 289144, 289144N, BX289144N
- Euclid: EBN289144N
- Haldex: 289144X, 289144RX
- Mack: 20QE3166R
- Meritor: R955289144N
- Navistar-International: BX289144N
- PAI: EM36250
