RT4 Multi-Function
- 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.
Notes
- Trailer Control Port is over Reservoir Port A.
- Repair Kit use part number RN10JM.
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