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Investors Relations & Haldex information

Emergency Relay Valve

Part no. KN30400X
item status Active
Product line Reman
Remanufactured Emergency Relay Valve , Suitable for pre-121 trailers, converter dollies, or exempt trailers., Approximate Weight 3 lbs.


  1. Available CoreFree™, order part number KN30400RX., Repair Kit use part number RN10HL.
Availability - If no Inventory shown, call regional CS
USA 38 standard packs in stock
Canada 5 standard packs in stock
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Cancer and
Reproductive Harm

Technical specs

Service Inlet 1/4"
Emergency Inlet 1/4"
Auxiliary Reservoir Plugged
Reservoir 3/4" with Nipple, Female
Crack Pressure 4.5± 1 PSI
Remarks Charging
OEM Part Number N4301CB
Approximate Weight 3 lbs.
Core Group 225


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