Haldex® - Trailer Valve

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In Stock (1)
Universal Fit
Fitment Notes:
  • Not Vehicle Specific
  • Trailer Control Port is over Reservoir Port A
  • Repair Kit use part number RN10JM
Replaces Original (OE) Part #:N4305A
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Product Details

Universal Trailer Valve by Haldex®. RT4 Multi-Function. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.


  • Trailer Control Port is over Reservoir Port A
  • Repair Kit use part number RN10JM


Trailer Supply (A): Plugged
Trailer Supply (B): 3/8"
Trailer Control: 3/8"
Reservoir (A): 1/2"
Reservoir (B): 3/8"
Delivery (4): 3/8"
PPV Closing Pressure: 70 PSI
Approximate Weight: 4.5 lbs.


  • Meets all FMVSS-121 trailer requirements for spring brake control and other regulations from October 1992 to present
  • Interchangeable with competitive units
  • Used on trailers to control both parking and emergency brake functions
  • Controls reservoir charging
  • Applies emergency (parking) brakes upon loss of trailer supply (emergency) line pressure
  • Approximate Weight 4.5 lbs

Haldex® is a Sweden-based company, operating worldwide with offices in 18 countries. Haldex develops and provides reliable and innovative solutions that improve safety, vehicle dynamics and environmental sustainability in the global commercial vehicle industry. Haldex is the world-leading supplier of brake adjusters for drum brakes and have the fastest growing market share for air disc brakes.

Part Number:
OE Numbers:

Vehicle Fitment

This part is universal


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Haldex® - Trailer Valve

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