HALDEX part description

Product Description

FAB Relay Valve - Fast Air Dolly - Two Delivery Ports

Features & Benefits

  • Designed for speedup or fast air relay
  • Can be used specifically on converter dollies, long wheelbase, and towing trailers to accelerate control signal and meet FMVSS121 pressure differential requirements
  • Product’s cover may be rotated without affecting the warranty or performance
  • Designed to replace the Bendix R8P or R12P
  • Weighs approximately 2.5 lbs. and has two mounting holes

Haldex Air Brake Relay Valve

Get improved air brake system performance with the Haldex air brake relay valve. Manufactured by a brand with more than 100 years of engineering expertise, this 2-port, Fast Air and Balancing (FAB) ABS relay valve is designed to provide supreme levels of quality, performance, and reliability.

Product Attributes

Control Port Diameter 3/8 in.
Delivery Port Diameter 2 @ 1/2 in.
Freight Class 70
Mounting Hole Diameter 2 @ 0.34 in. on 1.5 in. Centers
Opening Pressure 0 PSI
Supply Port Diameter 2 @ 1/2 in.

Additional Information

Country of Origin (Primary) MX
Harmonized Tariff Code (Schedule B) 8481200070
Harmonized Tariff Code (HTS) 8481200070
Remanufactured Part N
Warranty Distance 100000
Warranty Distance UOM MI
Warranty Special 36 MO, 350,000 MI=Haldex Air Brake Valves(1), Automatic Drain Valves (410-10XXX Series)(1). 12 MO, 100,000 MI= Automatic Drain Valves (N20878/ N20879 Series), Height Control Valve, Scale-O-Matic and AC Boxes. See L20221W.pdf for warranty details
Warranty Time 12
Warranty Time UOM MO
UPC 00767653010748
VMRS Code 013010009

Part Interchanges

Haldex® is a Sweden-based manufacturer specializing in brake and air suspension systems for heavy duty vehicles. Its product line consists of brake components for wheel ends, including disc brakes, brake adjusters, and actuators. It also offers air control products such as compressed air dryers, valves, ABS, and EBS. All these Haldex products are designed with safety and efficient operation in mind, cutting down on potential hazards and maintenance costs in the long run. Today, Haldex runs manufacturing and R&D facilities in 19 countries across four continents. It is dedicated to producing high-quality brake and suspension parts for its customers all around the world as well as developing new technologies for the future.

HALDEX KN28300 Cross Reference

We have 5 alternatives for the KN28300 by HALDEX:

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