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 Information | |||
|---|---|---|---|
| Product Line | Brakes | Category Name | Air Brake Valves |
| Part Type | Relay Valve | Alternate Part Name | Emergency Relay Trailer Valve |
| OEM Part Number | KN30300 | ||
| Application/Fitment Attributes | |||
| Application Type | Semi-Trucks, Heavy Duty Trucks | Compatible Repair Kit Part Number | F224646 |
| Delivery Port Qty | 4 | Delivery Port Size | 1/4 in-18 |
| Emergency Supply Port Size | 1/4-18 NPT | Service Port Size | 1/4-18 NPT |
| Supply Port Size | 3/4-14 NPT | ||
| Dimensional/Physical Attributes | |||
| Material | Die-cast Aluminum | ||
| Technical/Performance Attributes | |||
| Crack Pressure | 4.5 psi | Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Packaging / Logistics Attributes | |||
| Net Weight | 3.20 lb. | ||
| Additional Information | |||
| Intended Application |
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- Automann: 170KN30300
- Bendix: 281860, 281860N
- Euclid: EBN281860N
- Haldex: KN30300, KN30300N
- International-Navistar: ZZKN30300
- Mack: 5396-KN30300
- Meritor: R955281860N
- PAI: EM36350
- Wabco: S281672
